The AD6657A is an 11-bit, 200 MSPS, quad channel intermediate frequency (IF) receiver specifically designed to support multiple antenna systems in telecommunication applications where high dynamic range performance, low power, and small size are desired.The device consists of four high performance ADCs and NSR digital blocks. Each ADC consists of a multistage, differential pipelined architecture with integrated output error correction logic. The ADC features a wide bandwidth switched capacitor sampling network within the first stage of the differential pipeline. An integrated voltage reference eases design considerations. A duty cycle stabilizer (DCS) compensates for variations in the ADC clock duty cycle, allowing the converters to maintain excellent performance.Each ADC output is connected internally to an NSR block. The integrated NSR circuitry allows for improved SNR performance in a smaller frequency band within the Nyquist bandwidth. The device supports two different output modes selectable via the external MODE pin or the SPI.With the NSR feature enabled, the outputs of the ADCs are processed such that the AD6657A supports enhanced SNR performance within a limited portion of the Nyquist bandwidth while maintaining an 11-bit output resolution. The NSR block can be programmed to provide a bandwidth of either 22%, 33%, or 36% of the sample clock. For example, with a sample clock rate of 185 MSPS, the AD6657A can achieve up to 75.5 dBFS SNR for a 40 MHz bandwidth in the 22% mode, up to 73.7 dBFS SNR for a 60 MHz bandwidth in the 33% mode, or up to 70.0 dBFS SNR for a 65 MHz bandwidth in the 36% mode.With the NSR block disabled, the ADC data is provided directly to the output with a resolution of 11 bits. The AD6657A can achieve up to 66.5 dBFS SNR for the entire Nyquist bandwidth when operated in this mode. This allows the AD6657A to be used in telecommunication applications such as a digital predistortion observation path where wider bandwidths are used.After digital signal processing, multiplexed output data is routed into two 11-bit output ports such that the maximum data rate is 400 Mbps (DDR). These outputs are set at 1.8 V LVDS and support ANSI-644 levels.The AD6657A receiver digitizes a wide spectrum of IF frequencies. Each receiver is designed for simultaneous reception of a separate antenna. This IF sampling architecture greatly reduces component cost and complexity compared with traditional analog techniques or less integrated digital methods.Flexible power-down options allow significant power savings. Programming for device setup and control is accomplished using a 3-wire SPI-compatible serial interface with numerous modes to support board level system testing.The AD6657A is available in a Pb-free, RoHS-compliant, 144 ball, 10 mm ? 10 mm chip scale package ball grid array (CSP_BGA) that is specified over the industrial temperature range of ?40?C to +85?C.APPLICATIONS Communications Diversity radio and smart antenna (MIMO) systems Multimode digital receivers (3G) WCDMA, LTE, CDMA2000 WiMAX, TD-SCDMA I/Q demodulation systems General-purpose software radiosPRODUCT HIGHLIGHTS Four analog-to-digital converters (ADCs) are contained in a small, space-saving, 10 mm ? 10 mm ? 1.4 mm, 144-ball CSP_BGA package. Pin selectable noise shaping requantizer (NSR) function that allows for improved SNR within a reduced bandwidth of up to 65 MHz at 185 MSPS. LVDS digital output interface configured for low cost FPGA families. 230 mW per ADC core power consumption. 5. Operation from a single 1.8 V supply. Standard SPI that supports various product features and functions, such as data formatting (offset binary or twos complement), NSR, power-down, test modes, and voltage reference mode. On-chip integer 1-to-8 input clock divider and multichip sync function to support a wide range of clocking schemes and multichannel subsystems.

The AD6657 is an 11-bit, 200 MSPS, quad-channel intermediate frequency (IF) receiver specifically designed to support multi-antenna systems in telecommunication applications where high dynamic range performance, low power, and small size are desired.The device consists of four high performance analog-to-digital converters (ADCs) and noise shaping requantizer (NSR) digital blocks. Each ADC consists of a multistage, differential pipelined architecture with integrated output error correction logic. The ADC features a wide bandwidth switched-capacitor sampling network within the first stage of the differential pipeline. An integrated voltage reference eases design considerations. A duty cycle stabilizer (DCS) compensates for variations in the ADC clock duty cycle, allowing the converters to maintain excellent performance.Each ADC output is connected internally to an NSR block. The integrated NSR circuitry allows for improved SNR performance in a smaller frequency band within the Nyquist bandwidth. The device supports two different output modes selectable via the external MODE pin or the SPI.With the NSR feature enabled, the outputs of the ADCs are processed such that the AD6657 supports enhanced SNR performance within a limited portion of the Nyquist bandwidth while maintaining an 11-bit output resolution. The NSR block can be programmed to provide a bandwidth of either 22% or 33% of the sample clock. For example, with a sample clock rate of 185 MSPS, the AD6657 can achieve up to 75.5 dBFS SNR for a 40 MHz bandwidth in the 22% mode and up to 73.7 dBFS SNR for a 60 MHz bandwidth in the 33% mode.With the NSR block disabled, the ADC data is provided directly to the output with a resolution of 11 bits. The AD6657 can achieve up to 66.5 dBFS SNR for the entire Nyquist bandwidth when operated in this mode. This allows the AD6657 to be used in telecommunication applications such as a digital predistortion observation path where wider bandwidths are desired.After digital signal processing, multiplexed output data is routed into two 11-bit output ports such that the maximum data rate is 400 Mbps (DDR). These outputs are set at 1.8 V LVDS and support ANSI-644 levels.The AD6657 receiver digitizes a wide spectrum of IF frequencies. Each receiver is designed for simultaneous reception of a separate antenna. This IF sampling architecture greatly reduces component cost and complexity compared with traditional analog techniques or less integrated digital methods.Flexible power-down options allow significant power savings. Programming for device setup and control is accomplished using a 3-wire SPI-compatible serial interface with numerous modes to support board-level system testing.The AD6657 is available in a Pb-free/RoHS compliant, 144-ball, 10 mm ? 10 mm chip scale package ball grid array (CSP_BGA) and is specified over the industrial temperature range of ?40?C to +85?C.APPLICATIONS Communications Diversity radio and smart antenna (MIMO) systems Multimode digital receivers (3G) ?WCDMA, LTE, CDMA2000 ?WiMAX, TD-SCDMA I/Q demodulation systems General-purpose software radiosPRODUCT HIGHLIGHTS Four ADCs are contained in a small, space-saving, 10 mm ? 10 mm ? 1.4 mm, 144-ball CSP_BGA package. Pin selectable noise shaping requantizer (NSR) function that allows for improved SNR within a reduced bandwidth of up to 60 MHz at 185 MSPS. LVDS digital output interface configured for low cost FPGA families. 230 mW per ADC core power consumption. Operation from a single 1.8 V supply. Standard serial port interface (SPI) that supports various product features and functions, such as data formatting (offset binary or twos complement), NSR, power-down, test modes, and voltage reference mode. On-chip integer 1-to-8 input clock divider and multichip sync function to support a wide range of clocking schemes and multichannel subsystems.

The AD8112 is a low cost, fully buffered crosspoint switch matrix that operates on ?12 V for audio applications and ?5 V for video applications. It offers a ?3 dB signal bandwidth greater than 60 MHz and channel switch times of less than 60 ns with 0.1% settling for use in both analog and digital audio. The AD8112 operated at 20 kHz has a crosstalk performance of ?83 dB and isolation of 90 dB. In addition, ground/power pins surround all inputs and outputs to provide extra shielding for operation in the most demanding audio routing applications. With a differential gain and differential phase better than 0.1% and 0.1?, respectively, and a 0.1 dB flatness output of up to 10 MHz, the AD8112 is suitable for many video applications.The AD8112 includes eight independent output buffers that can be placed into a disabled state for paralleling crosspoint outputs so that off channel loading is minimized. The AD8112 has a gain of +2. It operates on voltage supplies of ?5 V or ?12 V while consuming only 34 mA or 31 mA of current, respectively. The channel switching is performed via a serial digital control (which can accommodate the daisy chaining of several devices) or via a parallel control, allowing updating of an individual output without reprogramming the entire array.The AD8112 is packaged in a 100-lead LQFP and is available over the commercial temperature range of 0?C to 70?C.Applications CCTV surveillance/DVR Analog/digital audio routers Video routers (NTSC, PAL, S-Video, SECAM) Multimedia systems Video conferencing

The AD8129/AD8130 are designed as receivers for the transmission of high speed signals over twisted-pair cables to work with the AD8131 or AD8132 drivers. Either can be used for analog ordigital video signals and for high speed data transmission.The AD8129/AD8130 are differential-to-single-ended amplifiers with extremely high CMRR at high frequency. Therefore, they canalso be effectively used as high speed instrumentation amps or for converting differential signals to single-ended signals.

The?AD8170(2:1) and AD8174(4:1) are very high speed buffered multiplexers. These multiplexers offer an internal current feedback output amplifier whose gain can be programmed via external resistors and is capable of delivering 50 mA of output current. They offer -3dB signal bandwidth of 250 MHz and slew rate of greater than than 1000 V/?s. Additionally, the AD8170 and AD8174 have excellent video specifications with low differential gain and differential phase error of 0.02% and 0.05? and 0.1 dB flatness out to 85 MHz. With a low 70 dB of crosstalk and better than 82 dB isolation, these devices are useful in many high speed applications. These are low power devices consuming only 9.7 mA from a ?5 V supply.The AD8174 offers a high speed disable feature allowing the output to be put into a high impedance state for cascading stages so that the off channels do not load the output bus. Additionally, the AD8174 can be shut down (SD) when not in use to minimize power consumption (IS = 1.5 mA). These products will be offered in 8-lead and 14-lead PDIP and SOIC packages.An evaluation board is available for this product and may be ordered using the following product number: AD8170-EB and AD8174-EB. Schematic and layout for this evaluation board is contained in the product datasheet.

The AD8222 is a dual-channel, high performance instrumentationamplifier that requires only one external resistor per amplifierto set gains of 1 to 10,000.The AD8222 is the first dual-instrumentation amplifier in thesmall 4 mm ? 4mm LFCSP. It requires the same board area as atypical single instrumentation amplifier. The smaller packageallows a 2? increase in channel density and a lower cost perchannel, all with no compromise in performance.The AD8222 can also be configured as a single-channel, differentialoutput instrumentation amplifier. Differential outputs providehigh noise immunity, which can be useful when the outputsignal must travel through a noisy environment, such as withremote sensors. The configuration can also be used to drivedifferential input analog-to-digital converters (ADCs). TheAD8222 maintains a minimum CMRR of 80 dB to 4 kHz for allgrades at G = 1. High CMRR over frequency allows the AD8222to reject wideband interference and line harmonics, greatlysimplifying filter requirements. The AD8222 also has a typicalCMRR drift over temperature of just 0.07 ?V/V/?C at G = 1.The AD8222 operates on both single and dual supplies and onlyrequires 2.2 mA maximum supply current for both amplifiers.It is specified over the industrial temperature range of ?40?C to+85?C and is fully RoHS compliant.For a single-channel version, see the AD8221.Applications Multichannel data acquisition for ECG and medical instrumentation Industrial process controls Wheatstone bridge sensors Differential drives for High resolution input ADCs Remote sensors

The AD8233 is an integrated signal conditioning block for electrocardiogram (ECG) and other biopotential measurement applications. It is designed to extract, amplify, and filter small biopotential signals in the presence of noisy conditions, such as those created by motion or remote electrode placement. This design allows an ultralow power analog-to-digital converter (ADC) or an embedded microcontroller to easily acquire the output signal.The AD8233 implements a two-pole, high-pass filter for eliminating motion artifacts and the electrode half cell potential. This filter is tightly coupled with the instrumentation amplifier architecture to allow both large gain and high-pass filtering in a single stage, thereby saving space and cost.An uncommitted operational amplifier enables the AD8233 to create a three-pole, low-pass filter to remove additional noise. The user can select the frequency cutoff of all filters to suit different types of applications.To improve the common-mode rejection of the line frequencies in the system and other undesired interferences, the AD8233 includes a right leg drive (RLD) amplifier for driven electrode applications. The AD8233 includes a fast restore function that reduces the duration of the otherwise long settling tails of the high-pass filters. After an abrupt signal change that rails the amplifier (such as a leads off condition), the AD8233 automatically adjusts to a higher filter cutoff. This feature allows the AD8233 to recover quickly, and therefore, to take valid measurements soon after connecting the electrodes to the subject.The AD8233 is available in a 2 mm ? 1.7 mm, 20-ball WLCSP package and a 150 ?m thin die for height constrained applications. Performance is specified from 0?C to 70?C and is operational from ?40?C to +85?C.Applications Fitness and activity heart rate monitors Portable ECG Wearable and remote health monitors Gaming peripherals Biopotential signal acquisition, such as EMG or EEG

The AD8235 is the smallest and lowest power instrumentationamplifier in the industry. It is available in a 1.5 mm ? 2.2 mmwafer level chip scale package (WLCSP). The AD8235 drawsa maximum quiescent current of 40 ?A. In addition, it draws amaximum 500 nA of current during shutdown mode, makingit an excellent instrumentation amplifier for battery powered,portable applications.The AD8235 can operate on supply voltages as low as 1.8 V. Theinput stage allows for wide rail-to-rail input voltage range withoutthe crossover distortion, common in other designs. The rail-torailoutput enables easy interfacing to ADCs.The AD8235 is an excellent choice for signal conditioning. Itslow input bias current of 50 pA and high CMRR of 110 dB(G = 100) offer tremendous value for its size and low power.It is specified over the extended industrial temperature range of?40?C to 125?C. Applications Medical instrumentation Low-side current sense Portable electronics

The AD8250 is an instrumentation amplifier with digitally programmable gains that has G? input impedance, low output noise, and low distortion making it suitable for interfacing with sensors and driving high sample rate analog-to-digital converters (ADCs). It has a high bandwidth of 10 MHz, low THD of ?110 dB and fast settling time of 615 ns (maximum) to 0.001%. Offset drift and gain drift are guaranteed to 1.7 ?V/?C and 10 ppm/?C, respectively, for G = 10. In addition to its wide input common voltage range, it boasts a high common-mode rejection of 80 dB at G = 1 from dc to 50 kHz. The combination of precision dc performance coupled with high speed capabilities makes the AD8250 an excellent candidate for data acquisition. Furthermore, this monolithic solution simplifies design and manufacturing and boosts performance of instrumentation by maintaining a tight match of internal resistors and amplifiers.The AD8250 user interface consists of a parallel port that allows users to set the gain in one of two ways (see Figure 1). A 2-bit word sent via a bus can be latched using the?WR input. An alternative is to use the transparent gain mode where the state of the logic levels at the gain port determines the gain.The AD8250 is available in a 10-lead MSOP package and is specified over the ?40?C to +85?C temperature range, making it an excellent solution for applications where size and packing density are important considerations.ApplicationsData acquisitionBiomedical analysisTest and measurement

The AD8264 is a quad, linear-in-dB, general-purpose, variable gain amplifier (VGA) with a preamplifier (preamp), and a flexible differential output buffer. DC coupling, combined with wide bandwidth, makes this amplifier a very good pulse processor. Each channel includes a single-ended input preamp/VGA section to preserve the wide bandwidth and fast slew rate for low distortion pulse applications. A 6 dB differential output buffer with common-mode and offset adjustments enable direct coupling to most modern high speed analog-to-digital converters (ADCs), using the converter reference output for perfect dc matching levels.The ?3 dB bandwidth of the preamp/VGA is dc to 235 MHz, and the bandwidth of the differential driver is 80 MHz. The floating gain control interface provides a precise linear-in-dB scale of 20 dB/V and is easy to interface to a variety of external circuits. The gain of each channel is adjusted independently, and all channels are referenced to a single pin, GNLO. Combined with a multioutput, digital-to-analog converter (DAC), each section of the AD8264 can be used for active calibration or as a trim amplifier.Operation from a bipolar power supply enables amplification of negative voltage pulses generated by current-sinking pulses into a grounded load, such as is typical of photodiodes or photomultiplier tubes (PMT). Delay-free processing of wideband video signals is also possible.Applications Multichannel data acquisition Positron emission tomography Gain trim Industrial and medical ultrasound Radar receivers

The AD8285 is designed for low cost, low power, compact size, flexibility, and ease of use. It contains four channels of a low noise preamplifier (LNA) with a programmable gain amplifier (PGA) and an antialiasing filter (AAF) plus one direct-to-ADC channel, all integrated with a single 12-bit analog-to-digital converter (ADC).Each channel features a gain range of 16 dB to 34 dB in 6 dB increments and an ADC with a conversion rate of up to 72 MSPS. The combined input referred noise voltage of the entire channel is 3.5 nV/?Hz at maximum gain. The channel is optimized for dynamic performance and low power in applications where a small package size is critical.Fabricated in an advanced complementary metal oxide semiconductor (CMOS) process, the AD8285 is available in a 10 mm ? 10 mm, RoHS compliant, 72-lead LFCSP that is specified over the automotive temperature range of ?40?C to +105?C.APPLICATIONS Automotive radar Adaptive cruise control Collision avoidance Blind spot detection Self parking Electronic bumper

The AD8302 is a fully integrated system for measuring gain/loss and phase in numerous receive, transmit, and instrumentation applications. It requires few external components and a single supply of 2.7 V?5.5 V. The ac-coupled input signals can range from ?60 dBm to 0 dBm in a 50 ? system, from low frequencies up to 2.7 GHz. The outputs provide an accurate measurement of either gain or loss over a ?30 dB range scaled to 30 mV/dB, and of phase over a 0??180? range scaled to 10 mV/degree. Both subsystems have an output bandwidth of 30 MHz, which may optionally be reduced by the addition of external filter capacitors. The AD8302 can be used in controller mode to force the gain and phase of a signal chain toward predetermined setpoints. The AD8302 comprises a closely matched pair of demodulating logarithmic amplifiers, each having a 60 dB measurement range. By taking the difference of their outputs, a measurement of the magnitude ratio or gain between the two input signals is available. These signals may even be at different frequencies, allowing the measurement of conversion gain or loss. The AD8302 may be used to determine absolute signal level by applying the unknown signal to one input and a calibrated ac reference signal to the other. With the output stage feedback connection disabled, a comparator may be realized, using the setpoint pins MSET and PSET to program the thresholds.The signal inputs are single-ended, allowing them to be matched and connected directly to a directional coupler. Their input impedance is nominally 3 k? at low frequencies. The AD8302 includes a phase detector of the multiplier type, but with precise phase balance driven by the fully limited signals appearing at the outputs of the two logarithmic amplifiers. Thus, the phase accuracy measurement is independent of signal level over a wide range. The phase and gain output voltages are simultaneously available at loadable ground referenced outputs over the standard output range of 0 V to 1.8 V. The output drivers can source or sink up to 8 mA. A loadable, stable reference voltage of 1.8 V is available for precise repositioning of the output range by the user. In controller applications, the connection between the gain output pin VMAG and the setpoint control pin MSET is broken. The desired setpoint is presented to MSET and the VMAG control signal drives an appropriate external variable gain device. Likewise, the feedback path between the phase output pin VPHS and its setpoint control pin PSET may be broken to allow operation as a phase controller. The AD8302 is fabricated on Analog Devices? proprietary, high performance 25 GHz SOI complementary bipolar IC process. It is available in a 14-lead TSSOP package and operates over a ?40?C to +85?C temperature range. An evaluation board is available.

The AD8309 is a 500 MHz detecting logarithmic amplifier, based on the successive detection technique. This 'log amp' is useful for received signal strength indication (RSSI) and phase detection in cellular base stations, radar and other radio transceiver applications.It provides a dynamic range of 100 dB with an accuracy of ?0.4 dB over the central 80 dB and operates up to 500 MHz. The logarithmic output is proportional to the logarithm of the input signal, providing a 0.4 V to 2.5 V DC signal over the 100 dB input range. A limiter output is also provided which amplifies the input signal by 100 dB, providing a stable limited output with a maximum of ?100 ps phase skew. This limiter output is useful for demodulating FSK and PSK modulated signals. The AD8309 operates from a single 2.7 V to 5.5 V dc power supply, drawing 20 mA typical. It is supplied in a 16 pin plastic TSSOP package.An evaluation board is available for this product and may be ordered using the following product number: AD8309-EVAL. Schematic and layout for this evaluation board is contained in the product datasheet.

The AD8318 is a demodulating logarithmic amplifier, capable of accurately converting an RF input signal to a corresponding decibel-scaled output voltage. It employs the progressive compression technique over a cascaded amplifier chain, each stage of which is equipped with a detector cell. The device is used in measurement or controller mode. The AD8318 maintains accurate log conformance for signals of 1 MHz to 6 GHz and provides useful operation to 8 GHz. The input range is typically 60 dB (re: 50 ?) with error less than ?1 dB. The AD8318 has a 10 ns response time that enables RF burst detection to beyond 45 MHz. The device provides unprecedented logarithmic intercept stability vs. ambient temperature conditions. A 2 mV/?C slope temperature sensor output is also provided for additional system monitoring. A single supply of 5 V is required. Current consumption is typically 68 mA. Power consumption decreases to

The AD8337 is a low noise, single-ended, linear-in-dB, general-purpose variable gain amplifier (VGA) usable at frequencies from dc to 100 MHz; the ?3 dB bandwidth is 280 MHz. Excellent bandwidth uniformity across the entire gain range and low output-referred noise makes the AD8337 ideal for gain trim applications and for driving high speed analog-to-digital converters (ADCs).Excellent dc characteristics combined with high speed make the AD8337 particularly suited for industrial ultrasound, PET scanners, and video applications. Dual-supply operation enables gain control of negative-going pulses such as generated by photodiodes or photomultiplier tubes.The AD8337 uses the popular and versatile X-AMP? architecture, exclusively from Analog Devices, Inc., with a gain range of 24 dB. The gain control interface provides precise linear-in-dB scaling of 19.7 dB/V, referenced to VCOM.The AD8337 includes an uncommitted operational current-feedback preamplifier (PrA) that operates in inverting or noninverting configurations. Using external resistors, the device can be configured for gains of 6 dB or greater. The AD8337 is characterized by a noninverting PrA gain of 2? using two external 100 ? resistors. The attenuator has a range of 24 dB, and the output amplifier has a fixed gain of 8? (18.06 dB). The lowest nominal gain range is 0 dB to 24 dB and can be shifted up or down by adjusting the preamp gain. Multiple AD8337s can be connected in series for larger gain ranges, and for interstage filtering to suppress noise and distortion, and for nulling offset voltages.The operating temperature range is ?40?C to +85?C, and it is available in an 8-lead, 3 mm ? 3 mm LFCSP.Applications Gain trim PET scanners High performance AGC systems I/Q signal processing Video Industrial and medical ultrasound Radar receivers

The AD8351 is a low cost differential amplifier useful in RF andIF applications up to 2.2 GHz. The voltage gain can be set fromunity to 26 dB using a single external gain resistor. The AD8351provides a nominal 150 ? differential output impedance. Theexcellent distortion performance and low noise characteristicsof this device allow for a wide range of applications.The AD8351 is designed to satisfy the demanding performancerequirements of communications transceiver applications. Thedevice can be used as a general-purpose gain block, an ADCdriver, and a high speed data interface driver, among otherfunctions. The AD8351 can also be used as a single-ended-to-differentialamplifier with similar distortion products as in thedifferential configuration. The exceptionally good distortionperformance makes the AD8351 an ideal solution for 12-bit and14-bit IF sampling receiver designs.Fabricated in Analog Devices, Inc., high speed XFCB process,the AD8351 has high bandwidth that provides high frequencyperformance and low distortion. The quiescent current of theAD8351 is 28 mA typically. The AD8351 amplifier comes in acompact 10-lead MSOP package or in a 16-lead LFCSP package,and operates over the temperature range of ?40?C to +85?C.Applications Differential ADC drivers Single-ended-to-differential conversion IF sampling receivers RF/IF gain blocks SAW filter interfacing AvailabilityOther RF / IF amplifiers products:AD8367 - 500 MHz Single Ended, Analog Controlled VGA AD8369 - 600 MHz, 45 dB Digitally Controlled Variable Gain Amplifier AD8350 - 1.0 GHz Differential Amplifier

The AD8352 is a high performance differential amplifier optimized for RF and IF applications. It achieves better than 80 dB SFDR performance at frequencies up to 200 MHz, and 65 dB beyond 500 MHz, making it an ideal driver for high speed 12-bit to 16-bit analog-to-digital converters (ADCs). Unlike other wideband differential amplifiers, the AD8352 has buffers that isolate the gain setting resistor(RG) from the signal inputs. As a result, the AD8352 maintains a constant 3 k? input resistance for gains of 3 dB to 25 dB, easing matching and input drive requirements. The AD8352 has a nominal 100 ? differential output resistance.The device is optimized for wideband, low distortion performance at frequencies beyond 500 MHz. These attributes, together with its wide gain adjust capability, make this device the amplifier of choice for general-purpose IF and broadband applications where low distortion, noise, and power are critical. It is ideally suited for driving not only ADCs but also mixers, pin diode attenuators, surface acoustic wave (SAW) filters, and multielement discrete devices. The device is available in a compact 3 mm ? 3 mm, 16-lead LFCSP and operates over a temperature range of ?40?C to +85?C.ApplicationsDifferential ADC driversSingle-ended-to-differential conversionRF/IF gain blocksSAW filter interfacing

The AD8354 is a broadband, fixed-gain, linear amplifier that operates at frequencies from 1 MHz up to 2.7 GHz. It is intended for use in a wide variety of wireless devices, including cellular, broadband, CATV, and LMDS/MMDS applications.By taking advantage of ADI?s high performance, complementary Si bipolar process, these gain blocks provide excellent stability over process, temperature, and power supply. This amplifier is single-ended and internally matched to 50 ? with a return loss of greater than 10 dB over the full operating frequency range.The AD8354 provides linear output power of nearly 4.3 dBm with 20 dB of gain at 900 MHz when biased at 3 V and an external RF choke is connected between the power supply and the output pin. The dc supply current is 24 mA. At 900 MHz, the output third-order intercept (OIP3) is greater than 18 dBm; at 2.7 GHz, the OIP3 is 14 dBm.The noise figure is 4.2 dB at 900 MHz. The reverse isolation (S12) is ?33 dB at 900 MHz.The AD8354 can also operate with a 5 V power supply; in which case, no external inductor is required. Under these conditions, the AD8354 delivers 4.88 dBm with 20 dB of gain at 900 MHz. The dc supply current is 26 mA. At 900 MHz, the OIP3 is greater than 19 dBm; at 2.7 GHz, the OIP3 is 15 dBm. The noise figure is 4.4 dB at 900 MHz. The reverse isolation (S12) is ?33 dB.The AD8354 is fabricated on ADI?s proprietary, high performance, 25 GHz, Si complementary, bipolar IC process. The AD8354 is available in a chip scale package that uses an exposed paddle for excellent thermal impedance and low impedance electrical connection to ground. It operates over a ?40?C to +85?C temperature range, and an evaluation board is also available.Applications VCO buffers General Tx/Rx amplification Power amplifier predrivers Low power antenna drivers

Silicon Bipolar VGA with integrated Square Law DetectorThe AD8367 is a high-performance variable gain amplifier designed to be used at IF frequencies up to 500 MHz. An externally applied analog gain control voltage of 0 to 1 volt, scales the 45 dB of gain control range to provide 20 mV/dB output. The precise linear-dB gain control is achieved with a proprietary X-AMP? architecture, consisting of a variable attenuator network fed by a Gaussian interpolator yielding precise linear gain adjustment.In addition the AD8367 has an integrated square law detector, which enables the part to be used as an AGC solution and provides a detected received signal strength indication (RSSI) output voltage.The AD8367 has been specified for operation at common IF frequencies 70 MHz, 140 MHz, 190 MHz and 240 MHz found in the cellular CDMA / GSM and W-CDMA applications.The AD8367 is fabricated on a high performance silicon bipolar process, package in 14-lead thin shrunk small outline (TSSOP) package fully specified over ?40?C to +85?C temperature range.

The AD8369 is a high performance, digitally controlled variable gain amplifier, designed to be used at IF frequencies within cellular receivers.The device features a 4-bit digitally controlled gain control interface configurable for either parallel or 3 wire serial control. The gain control range spans 45 dB adjustable in 3 dB increments.The AD8369 is ideally suited to be used in digital IF receivers and is fully specified for operation at common IF frequencies 70 / 140 / 190 / 240 / 380 MHz. The gain stability and flatness is below 0.1 dB over a 20 MHz channel bandwidth at 380 MHz. Coupled with the low distortion and the ability to drive 200 ? or 1 K ?, the AD8369 allows optimal placement and flexibility as a high IF gain control element.The AD8369 is fabricated on an advanced silicon bipolar process, operating on a single 3 or 5 volt supply, packaged in space saving 16-lead thin shrunk small outline (TSSOP) package and fully specified over the ?40?C to +85?C temperature range.