Demonstration circuit 679 features the LT3463EDD in two circuits. One circuit is optimized for small size (9mA max output current) and the other for high performance (13mA max  output current). Both circuits are dual output ±20V voltage regulators with a 2.7V to 6V input voltage range. The positive regulator is a boost converter and the negative rail is an inverting charge pump.

DC682A: Demo Board for the LTC1859 8-Channel, 16-Bit, 100ksps SoftSpan A/D Converters with Shutdown.

The LT4256-3 is a high voltage Hot Swap? controller that allows a board to be safely inserted and removed from a live backplane. An internal driver controls the high side N-channel MOSFET gate for supply voltages ranging from 10.8V to 80V. The part features an open-circuit detect (OPEN) output that indicates abnormally low load current conditions.The LT4256-3 also features an adjustable analog foldback current limit. If the supply remains in current limit for more than a programmable time, the N-channel MOSFET shuts off, the PWRGD output asserts low and the LT4256-3 either automatically restarts after a time-out delay or latches off until the UV pin is cycled low (depending on the status of the RETRY pin).The PWRGD output indicates when the output voltage rises above a programmed level. An external resistor string from VCC provides programmable undervoltage and overvoltage protection.The LT4256-3 is available in a 16-lead SSOP package. Retry / Latch Off Features Package LT4256-1 Latch Off UV SO-8 LT4256-2 Retry UV SO-8 LT4256-3 Latch Off or Retry UV/OV, Open Circuit Detect SSOP-16 Applications Hot Board Insertion Electronic Circuit Breaker/Power Bussing Industrial High Side Switch/Circuit Breaker 24V/48V Industrial/Alarm Systems Ideally Suited for 12V, 24V and 48V Distributed Power Systems 48V Telecom Systems

Demonstration circuit 686, featuring the LTC3780 controller, is a high efficiency buck-boost DC/DC converter that can regulate its output from input voltages both above and below the output. The demo board delivers 12V@5A from an input range of 5V to 32V.

DC699A-A: Demo Board for the LTC1749 12-Bit, 80Msps Wide Bandwidth ADC.

DC699A-B: Demo Board for the LTC1750 14-Bit, 80Msps Wide Bandwidth ADC.

Demonstration circuit DC702 is a 2.25 MHz step-down converter, using the LTC3406B-2 adjustable output monolithic synchronous buck regulator. The DC702 has an input voltage range of 2.5V to 5.5V, and is capable of delivering up to 600 mA of output current at a minimum input voltage of 3V. the output voltage is set to 1.8V. The DC702 is made for noise sensitive applications, due to the LTC3406B-2 operating in pulse-skipping mode at low load currents.

The LT3024 is a dual, micropower, low noise, low dropout regulator. With an external 0.01?F bypass capacitor, output noise drops to 20?VRMS over a 10Hz to 100kHz bandwidth. Designed for use in battery-powered systems, the low 30?A quiescent current per output makes it an ideal choice. In shutdown, quiescent current drops to less than 0.1?A. Shutdown control is independent for each output, allowing for flexibility in power management. The device is capable of operating over an input voltage range of 1.8V to 20V. The device can supply 100mA of output current from Output 2 with a dropout voltage of 300mV. Output 1 can supply 500mA of output current with a dropout voltage of 300mV. Quiescent current is well controlled in dropout.The LT3024 regulator is stable with output capacitors as low as 1?F for the 100mA output and 3.3?F for the 500mA output. Small ceramic capacitors can be used without the series resistance required by other regulators.Internal protection circuitry includes reverse-battery protection, current limiting, thermal limiting and reverse current protection. The device is available as an adjustable device with a 1.22V reference voltage. The LT3024 regulator is available in the thermally enhanced 16-lead TSSOP and 12-lead, low profile (4mm x 3mm x 0.75mm) DFN packages.Applications Cellular Phones Pagers Battery-Powered Systems Frequency Synthesizers Wireless Modems

The LTC3738 is a 3-phase synchronous step-down switching regulator controller that drives all N-channel external power MOSFET stages in a phase-lockable, fixed frequency architecture. The 3-phase technique effectively triples the fundamental frequency, improving transient response while operating each controller at an optimal frequency for efficiency and ease of thermal design. Light load efficiency is optimized by using a choice of output Stage Shedding or Pulse Skip mode technology.The LTC3738 also allows users to program load slope via a resistor for AVP control. Both external and internal thermal sensing are available from the on-chip thermal detector and comparator.A differential amplifier provides sensing of both the high and low sides of the output voltage.Soft-start and a defeatable, timed short-circuit shutdown protect the MOSFETs and the load. A foldback current circuit also provides protection for the external MOSFETs under short-circuit or overload conditions. An all- ?1? VID detector turns off the regulator after a 1?s timeout.Applications High Performance Notebook Computers Servers, Desktop Computers and Workstations

DC732A: Demo Board for the LTC2923 Power Supply Tracking Controller.

The LT5519 mixer is designed to meet the high linearity requirements of wireless and cable infrastructure transmission systems. A high speed, internally 50? matched, LO amplifier drives a double-balanced mixer core, allowing the use of a low power, single-ended LO source. An RF output transformer is integrated, thus eliminating the need for external matching components at the RF output, while reducing system cost, component count, board area and system-level variations. The IF port can be easily matched to a broad range of frequencies for use in many different applications.The LT5519 mixer delivers +17.1dBm typical input 3rd order intercept point at 1GHz with IF input signal levels of ?10dBm. The input 1dB compression point is typically +5.5dBm. The IC requires only a single 5V supply.Applications Wireless Infrastructure Cable Downlink Infrastructure Point-to-Point and Point-to-Multipoint Data Communications High Linearity Frequency Conversion

The LTC2921 and LTC2922 monitor up to five supplies and force them to track on power-up in multiple supply systems. Using external N-channel pass transistors, the supplies can be ramped up at an adjustable rate. Automatic remote sense switching allows the DC/DC converters to compensate for series voltage drops in the wiring. An incorrect level on one or more of the supplies triggers disconnect of all supplies. Tight 1% accuracy and glitch immunity on the low 0.5V monitoring level ensure no false error disconnects.The LTC2921 and LTC2922 each feature an adjustable electronic circuit breaker to protect the VCC supply against short circuits. Capacitance at the TIMER pin programs the delays in the monitoring sequence.The LTC2921 includes three remote sense switches in a 16-pin narrow SSOP package, while the LTC2922 includes five remote sense switches in a 20-pin TSSOP package. Both parts are available for VCC supply voltages of 5V, 3.3V, and 2.5V.Applications Desktop Computers Plug-In Cards Telecom Infrastructure Supply Sequencing Instruments

The LT6553 is a high-speed triple video amplifier with an internally fixed gain of 2. The individual amplifiers are optimized for performance with a double terminated 75? video load and feature a 2VP?P full signal bandwidth of 400MHz, making them ideal for driving very high-resolution video signals. Separate power supply pins for each amplifier boost channel separation to 75dB, allowing the LT6553 to excel in many high-speed applications.While the performance of the LT6553 is optimized for dual supply operation, it can also be used on a single supply as small as 4.5V. Using dual 5V supplies, each amplifier draws only 8mA. When disabled, the amplifiers draw less than 100?A and the output pins become high impedance. Furthermore, the amplifiers are capable of turning on in less than 50ns, making them ideal for multiplexing and portable applications.The LT6553 is manufactured on our proprietary low voltage complementary bipolar process and is available in the 16-lead SSOP package that fits in the same PCB area as an SO-8 package.Applications RGB Amplifiers Coaxial Cable Drivers LCD Projectors

DC745A: Demo Board for the LTC2433-1 Differential Input 16-Bit No Latency Delta Sigma ADC.

The LT5537 is a wide dynamic range RF/IF detector, operational from below 10MHz to 1000MHz. The lower limit of the operating frequency range can be extended to near DC by the use of an external capacitor. The input dynamic range at 200MHz with ?3dB nonlinearity is 90dB (from ?76dBm to 14dBm, single-ended 50? input). The detector output voltage slope is nominally 20mV/dB, and the typical temperature coefficient is 0.01dB/?C at 200MHz.Applications Linear-to-Log Signal Level Conversion Received Signal Strength Indication (RSSI) RF Power Control RF/IF Power Detection Receiver RF/IF Gain Control Envelope Detection ASK Receiver

DC749A: Demo Board for the LTC3206 I2C Multidisplay LED Controller.

The LTC2222 and LTC2223 are 105Msps/80Msps, sampling 12-bit A/D converters designed for digitizing high frequency, wide dynamic range signals. The LTC2222/LTC2223 are perfect for demanding communications applications with AC performance that includes 68dB SNR and 80dB spurious free dynamic range for signals up to 170MHz. Ultralow jitter of 0.15psRMS allows undersampling of IF frequencies with excellent noise performance.DC specs include ?0.3LSB INL (typ), ?0.2LSB DNL (typ) and no missing codes over temperature. The transition noise is a low 0.5LSBRMS.A separate output power supply allows the outputs to drive 0.5V to 3.6V logic.The ENC+ and ENC? inputs may be driven differentially or single ended with a sine wave, PECL, LVDS, TTL, or CMOS inputs. An optional clock duty cycle stabilizer allows high performance at full speed for a wide range of clock duty cycles.Applications Wireless and Wired Broadband Communication Cable Head-End Systems Power Amplifier Linearization Communications Test Equipment

DC753A: Demo Board for the LT5526 High Linearity, Low Power Downconverting Mixer.

The LTC3443 is a high efficiency, fixed frequency, buck-boost DC/DC converter that operates from input voltages above, below or equal to the output voltage. The part is pin for pin compatible with its predecessor, the LTC3441, with a lower operating frequency (600kHz), and a VC pin clamp circuit during Burst Mode operation. The topology incorporated in the IC provides a continuous transfer function through all operating modes, making the product ideal for single Lithium Ion or multi-cell applications where the output voltage is within the battery voltage range.The device includes two 0.10? N-channel MOSFET switches and two 0.11? P-channel switches. External Schottky diodes are optional, and can be used for a moderate efficiency improvement. The operating frequency is internally set to 600kHz and can be synchronized up to 1.2MHz. Quiescent current is only 28?A in Burst Mode operation, maximizing battery life in portable applications. Burst Mode operation is user controlled and can be enabled by driving the MODE/SYNC pin high. If the MODE/ SYNC pin is driven low or with a clock, then fixed frequency switching is enabled.Other features include a 1?A shutdown, soft-start control, thermal shutdown and current limit. The LTC3443 is available in a thermally enhanced 12-lead (4mm ? 3mm) DFN Package.Applications Handheld Computers Handheld Instruments MP3 Players Digital Cameras

DC757A-B: Demo Board for the LTC4302 Addressable 2-Wire Bus Buffer.