DC393B
Analog Devices Inc.The LTC1564 is a new type of continuous time filter for antialiasing, reconstruction and other band-limiting applications. No other analog components or filter expertise are needed to use it. There is one analog input pin and one analog output pin. The cutoff frequency (fC) and gain are programmable while the shape of the lowpass response is fixed. A latching digital interface stores fC and gain settings or it can be bypassed for control directly from the pins. The LTC1564 operates from 2.7V to 10V total (single or split supplies) and comes in a 16-pin surface mount SSOP.The LTC1564 is a rail-to-rail high resolution 8th-order lowpass filter with two stopband notches, giving approximately 100dB attenuation at 2.5 times the passband cutoff frequency fC (a de-facto standard for DSP front ends). Signals with low or variable levels can be normalized with the built-in variable gain that reduces input-referred noise with increasing gain for a typical dynamic range (maximum signal level to minimum noise) of 122dB (20 equivalent bits) with 20kHz fC and 118dB at 100kHz fC on a ?5V supply.Other frequency-response shapes can be provided upon request. Please contact Analog Devices Marketing.Applications Antialias or Reconstruction Filtering DSP Systems Communications Systems Scientific Instruments High Resolutions (16 Bits to 20 Bits) Processing Signals Buried in Noise Audio Signal Processing Programmable Data Rates Automatic Gain Control (AGC) Single Part Replacing Multiple Filters
LTC3400BES6 | 1.2MHz, High Efficiency Synchronous Boost Converter, VIN = 1V to 3V, VOUT = 3.3V @ 90mA
Analog Devices Inc.DC398A-B: Demo Board for LTC3400B 600mA, 1.2MHz Micropower Synchronous Boost Converters in ThinSOT.
LTC3713EG | Low Input Voltage, High Power, No RSENSE Synchronous Buck Converter, 1.7V to 6V Input, 1.25VOUT @ 10A
Analog Devices Inc.DC412A: Demo Board for the LTC3713 Low Input Voltage, High Power, No RSENSE Synchronous Buck DC/DC Controller
DC414B
Analog Devices Inc.The LTC1871 is a wide input range, current mode, boost, flyback or SEPIC controller that drives an N-channel power MOSFET and requires very few external components. Intended for low to medium power applications, it eliminates the need for a current sense resistor by utilizing the power MOSFET?s on-resistance, thereby maximizing efficiency.The IC?s operating frequency can be set with an external resistor over a 50kHz to 1MHz range, and can be synchronized to an external clock using the MODE/SYNC pin. Burst Mode operation at light loads, a low minimum operating supply voltage of 2.5V and a low shutdown quiescent current of 10?A make the LTC1871 ideally suited for battery-operated systems.For applications requiring constant frequency operation, Burst Mode operation can be defeated using the MODE/ SYNC pin. Higher output voltage boost, SEPIC and flyback applications are possible with the LTC1871 by connecting the SENSE pin to a resistor in the source of the power MOSFET.The LTC1871 is available in the 10-lead MSOP package. Vin Range INTVcc Features LTC1871 2.5V to 36V 5.2V - LTC1871-1 2.5V to 36V 5.2V Lower Burst Mode Threshold (0.195V vs. 0.3V) LTC1871-7 6V to 36V 7V Drives 6V Gate N-Channel MOSFETs LTC1871X 2.5V to 36V 5.2V 175?C Junction Temp, 100% Tested at 175?C Applications Telecom Power Supplies Portable Electronic Equipment
DC416A
Analog Devices Inc.The LTC1864/LTC1865 are 16-bit A/D converters that are offered in MSOP and SO-8 packages and operate on a single 5V supply. At 250ksps, the supply current is only 850?A. The supply current drops at lower speeds because the LTC1864/LTC1865 automatically power down between conversions. These 16-bit switched capacitor successive approximation ADCs include sample-and-holds. The LTC1864 has a differential analog input with an adjustable reference pin. The LTC1865 offers a software-selectable 2-channel MUX and an adjustable reference pin on the MSOP version.The 3-wire, serial I/O, small MSOP or SO-8 package and extremely high sample rate-to-power ratio make these ADCs ideal choices for compact, low power, high speed systems.These ADCs can be used in ratiometric applications or with external references. The high impedance analog inputs and the ability to operate with reduced spans down to 1V full scale, allow direct connection to signal sources in many applications, eliminating the need for external gain stages.Applications High Speed Data Acquisition Portable or Compact Instrumentation Low Power Battery-Operated Instrumentation Isolated and/or Remote Data Acquisition
DC424A
Analog Devices Inc.The LTC3701 is a 2-phase dual constant frequency current mode step-down DC/DC controller providing excellent load and line regulation. Power loss and noise due to ESR of the input capacitor are minimized by operating the two controller output stages out-of-phase.The LTC3701 provides a 0.8V ?2% voltage reference and consumes only 460?A of quiescent current. To further maximize the life of a battery source, the external P-channel MOSFET is turned on continuously in dropout (100% duty cycle).Switching frequency is internally set at 550kHz, allowing the use of small inductors and capacitors. For noise sensitive applications, the LTC3701 can be externally synchronized using its phase-locked loop. The frequency can also be externally set from 300kHz to 750kHz by applying a voltage to the PLLLPF pin. Burst Mode operation is inhibited during synchronization or when the EXTCLK/MODE pin is pulled low to reduce noise and RF interference.The LTC3701 contains independent internal soft-start circuitry for each controller. Other features include a power good output voltage monitor and output overvoltage and short-circuit protection.The LTC3701 is available in a small footprint 16-lead narrow SSOP package.Applications One or Two Lithium-Ion Powered Applications Notebook and Handheld Computers Personal Digital Assistants Portable Instruments Distributed DC Power Systems
LT4250LCS8 | Negative Voltage Hot Swap Controller
Analog Devices Inc.DC429A: Demo Board for the LT4250 Negative 48V Hot Swap Controller.
LT1944-1EMS | Triple Output Power Supply For LCD Panels, VIN = 2.7V to 4.2V, VOUT = 5V @ 30mA, 15V @ 2.5mA, -10V @ 1mA
Analog Devices Inc.DC445A: Demo Board for the LT1944-1 Dual Micropower Step-Up DC/DC Converter.
LTC3707EGN | Dual Phase, 2-Output Power Supply, 7V to 21V Input, 5VOUT@ 5A and 3.3VOUT @ 5A
Analog Devices Inc.DC455A: Demo Board for LTC3707 High Efficiency, 2-Phase Synchronous Step-Down Switching Regulator.
LT3420EMS | Strobe Capacitor Charger, High Voltage Supply, 1.8V to 10V Input, 320VOUT
Analog Devices Inc.DC460A: Demo Board for LT3420 Photoflash Capacitor Chargers with Automatic Refresh.
DC465A
Analog Devices Inc.The LTC1955 provides all necessary supervisory and power control functions for two smart cards, two S.A.M. cards or a combination of S.A.M. and smart cards. It provides a charge pump for battery-powered applications as well as all necessary level shifting circuitry.The card voltages can be independently set to 1.8V, 3V or 5V. Both card interfaces include a card detection channel with automatic debounce circuitry. To reduce wiring costs, the LTC1955 interfaces to a microcontroller via a simple 4-wire serial interface. Multiple devices may be connected in daisychain fashion so that the number of wires to the card socket board is independent of the number of sockets. Status data is returned over the same interface.Extensive security features ensure proper deactivation sequencing in the event of a supply fault or a smart card electrical fault. The smart card pins can withstand greater than 10kV ESD in-situ with no additional components.The LTC1955 is available in a low profile (0.75mm) 5mm ? 5mm QFN package.Applications Handheld Payment Terminals Pay Telephones ATM Machines POS Terminals Computer Keyboards Multiple S.A.M. Sockets
DC480A-E
Analog Devices Inc.The LTC3405A is a high efficiency monolithic synchronous buck regulator using a constant frequency, current mode architecture. Supply current during operation is only 20?A and drops to
LTC3720EGN | VRM 8.5 Processor Power Supply, 7.5V to 21VIN, 1.05V to 1.825VOUT @ 20A
Analog Devices Inc.DC483A: Demo Board for the LTC3720 Single Phase VRM8.5 Current Mode Step-Down Controller.
DC491A
Analog Devices Inc.The LTC1923 is a pulse width modulator intended for thermoelectric cooler (TEC) or heater applications requiring either unidirectional or bidirectional drive circuits. All of the necessary control circuitry and two sets of complementary output drivers are integrated into the LTC1923 to drive a full bridge, providing an efficient means of bidirectional current flow to the TEC. An accurate temperature control loop to stabilize the temperature of a laser diode system is easily achieved with the addition of just a few external components. Typical temperature setpoint accuracy of 0.1?C is achievable with the LTC1923. Adding an instrumentation amplifier front end allows setpoint stability of 0.01?C.The part features independent adjustable heating and cooling pulse-by-pulse current limit, current soft-start for controlled start-up, output slew rate control to reduce system noise, differential current sense and voltage amplifiers and a host of auxiliary circuits to protect the laser and provide redundant system monitoring.Applications Laser-Based Fiber Optic Links Medical Instruments CPU Temperature Regulators
DC498C
Analog Devices Inc.The LTC4007 is a complete constant-current/constant-voltage charger controller for 3- or 4-cell lithium-ion batteries. The PWM controller uses a synchronous, quasi-constant frequency, constant off-time architecture that will not generate audible noise even when using ceramic capacitors. Charging current is programmable to ?4% accuracy using a programming resistor. Charging current can also be monitored as a voltage across the programming resistor.The output float voltage is pin programmed for cell count (3 cells or 4 cells) and chemistry (4.2V/4.1V). A timer, programmed by an external resistor, sets the charge termination time. Charging is automatically restarted when cell voltage falls below 3.9V/cell.LTC4007 includes a thermistor input, which suspends charging if an unsafe temperature condition is detected. If the cell voltage is less than 2.5V, a low-battery indicator asserts and can be used to program a trickle charge current to safely charge depleted batteries. The FAULT pin is also asserted and charging terminates if the low-battery condition persists for more than 1/4 of the total charge time. LTC4007 LTC4007-1 Low battery threshold 4.2V cell 2.5V 3.25V Low battery threshold 4.1V cell 2.44V 3.173V Restart Enabled Disabled Package SSOP-24 QFN-24 Applications Notebook Computers Portable Instruments Battery-Backup Systems Standalone Li-Ion Chargers
DC1954A-D
Analog Devices Inc.The LTC6954 is a family of very low phase noise clock distribution parts. Each part has three outputs and each output has an individually programmable frequency divider and delay. There are four members of the family, differing in their output logic signal type:LTC6954-1: Three LVPECL outputsLTC6954-2: Two LVPECL and one LVDS/CMOS outputsLTC6954-3: One LVPECL and two LVDS/CMOS outputsLTC6954-4: Three LVDS/CMOS outputsEach output is individually programmable to divide the input frequency by any integer from 1 to 63, and to delay each output by 0 to 63 input clock cycles. The output duty cycle is always 50%, regardless of the divide number. The LVDS/CMOS outputs are jumper selectable via the OUTxSEL pins to provide either an LVDS logic output or a CMOS logic output.The LTC6954 also features Linear Technology?s EZSync system for perfect clock synchronization and alignment every time.All device settings are controlled through an SPI-compatible serial port.Applications Clocking High Speed, High Resolution ADCs, DACs?and Data Acquisition Systems Low Jitter Clock Distribution
DC1956A
Analog Devices Inc.The LT3905 is a fixed frequency current-mode step-up converter designed to bias avalanche photodiodes (APD) in optical receivers. The LT3905 features high side APD current monitoring over four decades of dynamic range with better than 2% relative accuracy over the 3?A to 3mA range.The maximum APD current is programmed with a single resistor, and a fast current limiter with indicator protects the APD during overload conditions. Adjustable output voltage provides dynamic bias control, and an adjustable loss-of-signal indicator flags low APD current.Coupled with the integrated DMOS power switch and Schottky rectifier, the LT3905 provides a compact total solution with few external components and low solution cost. Constant switching frequency results in predictable output noise that is easy to filter.The LT3905 is available in the tiny footprint (3mm ? 3mm) 16-Lead QFN Package.Applications APD Bias PIN Diode Bias Optical Receivers and Modules Fiber Optic Network Equipment
DC1961A
Analog Devices Inc.The LT3748 is a switching regulator controller specifically designed for the isolated flyback topology and capable of high power. It drives a low side external N-channel power MOSFET from an internally regulated 7V supply. No third winding or opto-isolator is required for regulation as the part senses the isolated output voltage directly from the primary-side flyback waveform.The LT3748 utilizes boundary mode to provide a small magnetic solution without compromising load regulation. Operating frequency is set by load current and transformer magnetizing inductance. The gate drive of the LT3748 combined with a suitable external MOSFET allow it to deliver load power up to several tens of watts from input voltages as high as 100V.The LT3748 is available in a high voltage 16-lead MSOP package with four leads removed.APPLICATIONS Isolated Telecom Converters High Power Automotive Supplies Isolated Industrial Power Supplies Military and High Temperature Applications
Starter Kit for Power System Management [Includes DC1962C, DC1613A]
Analog Devices Inc.DC1962C-KIT Demo Board for:
LTC2977 8-Channel PMBus Power System Manager Featuring Accurate Output Voltage Measurement
LTC2974 4-Channel PMBus Power System Manager Featuring Accurate Output Current Measurement
LTC3880 Dual Output PolyPhase Step-Down DC/DC Controller with Digital Power System Management
LT8697 Demo Board | 6V ≤ VIN ≤ 42V, 5V @ 2.5A USB Supply Output, Cable Drop Compensation
Analog Devices Inc.Demonstration circuit 1973A is a USB 5V 2.5A output, 6V to 42V input synchronous buck with cable drop compensation featuring the LT8697. The LT8697 is a compact, high efficiency, high speed synchronous monolithic step-down switching regulator designed to power 5V USB applications. A precise output voltage and programmable cable drop compensation maintain accurate 5V regulation at the USB socket at the end of a long cable. The circuit runs at 2MHz to minimize external components size and to avoid AM band.
