The LTC3412A is a high efficiency monolithic synchronous, step-down DC/DC converter utilizing a constant frequency, current mode architecture. It operates from an input voltage range of 2.25V to 5.5V and provides a regulated output voltage from 0.8V to 5V while delivering up to 3A of output current. The internal synchronous power switch with 77m? on-resistance increases efficiency and eliminates the need for an external Schottky diode. Switching frequency is set by an external resistor or can be synchronized to an external clock. 100% duty cycle provides low dropout operation extending battery life in portable systems. OPTI-LOOP? compensation allows the transient response to be optimized over a wide range of loads and output capacitors. The LTC3412A can be configured for either Burst Mode operation or forced continuous operation. Forced continuous operation reduces noise and RF interference while Burst Mode operation provides high efficiency by reducing gate charge losses at light loads. In Burst Mode operation, external control of the burst clamp level allows the output voltage ripple to be adjusted according to the application requirements.APPLICATIONS Point-of-Load Regulation Notebook Computers Portable Instruments Distributed Power Systems

DC1444A-B: Demo Board for the LTC2305 2-Channel, 12-Bit ADCs with I2C Compatible Interface.

The LT8705A is a high performance buck-boost switching regulator controller that operates from input voltages above, below or equal to the output voltage. The part has integrated input current, input voltage, output current and output voltage feedback loops. With a wide 2.8V to 80V input and 1.3V to 80V output range, the LT8705A is compatible with most solar, automotive, telecom and battery-powered systems. The LT8705A is an improved pin compatible version of the LT8705 and is recommended for new designs. See LT8705A vs LT8705 in the Applications Information section for more information.The LT8705A includes a MODE pin to select among Burst Mode? operation, discontinuous or continuous conduction mode at light loads. Additional features include a 3.3V/12mA LDO, a synchronizable fixed operating frequency, and onboard gate drivers. LT8705 LT8705A Improved, pin-to-pin compatible version of LT8705. ?Recommended for all new designs Applications High Voltage Buck-Boost Converters Input or Output Current Limited Converters

The HMC1162 is a monolithic microwave integrated circuit (MMIC), voltage controlled oscillator (VCO) that integrates the resonator, a negative resistance device, and varactor diodes, and features a half frequency output.Because of the monolithic construction of the oscillator, the output power and phase noise performance are excellent over temperature.The power output is 11 dBm typical from a 5 V supply voltage. The VCO is housed in a RoHS-compliant, 32-lead LFCSP and requires no external matching components.APPLICATIONS Point to point and multipoint radios Test equipment and industrial controls Very small aperture terminals (VSATs)

The LT5506 is a 40MHz to 500MHz monolithic integrated quadrature demodulator with variable gain amplifier (VGA), designed for low voltage operation. It supports standards that use a linear modulation format. The chip consists of a VGA, quadrature down-converting mixers and lowpass noise filters. The LO port consists of a divide-by-two stage and LO buffers. The IC provides all building blocks for IF down-conversion to I and Q baseband signals with a single supply voltage of 1.8V to 5.25V. The VGA gain has a linear-in- dB relationship to the control input voltage. Hard-clipping amplifiers at the mixer outputs reduce the recovery time from a signal overload condition. The lowpass filters reduce the out-of-band noise and spurious frequency components. The cut-off frequency of the noise filters is approximately 8.8MHz. The external 2xLO frequency is required to be twice the IF input frequency for the mixers. The standby mode provides reduced supply current and fast transient response into the normal operating mode when the I/Q outputs are AC-coupled to a baseband chip.Applications IEEE802.11 High Speed Wireless LAN Wireless Local Loop

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

The LTC2051/LTC2052 are dual/quad zero-drift operational amplifiers available in the MS8 and SO-8/GN16 and S14 packages. For space limited applications, the LTC2051 is available in a 3mm ? 3mm ? 0.8mm dual fine pitch leadless package (DFN). They operate from a single 2.7V supply and support ?5V applications. The current consumption is 750?A per op amp.The LTC2051/LTC2052, despite their miniature size, feature uncompromising DC performance. The typical input offset voltage and offset drift are 0.5?V and 10nV/?C. The almost zero DC offset and drift are supported with a power supply rejection ratio (PSRR) and common mode rejection ratio (CMRR) of more than 130dB.The input common mode voltage ranges from the negative supply up to typically 1V from the positive supply. The LTC2051/LTC2052 also have an enhanced output stage capable of driving loads as low as 2k? to both supply rails. The open-loop gain is typically 140dB. The LTC2051/ LTC2052 also feature a 1.5?VP-P DC to 10Hz noise and a 3MHz gain-bandwidth product.Applications Thermocouple Amplifiers Electronic Scales Medical Instrumentation Strain Gauge Amplifiers High Resolution Data Acquisition DC Accurate RC Active Filters Low Side Current Sense

The ADN4654/ADN4655/ADN46561? are signal isolated, low voltage differential signaling (LVDS) buffers that operate at up to 1.1 Gbps with low jitter. The devices integrate Analog Devices, Inc., iCoupler? technology, enhanced for high speed operation to provide galvanic isolation of the TIA/EIA-644-A compliant LVDS drivers and receivers. This integration allows drop-in isolation of an LVDS signal chain.The ADN4654/ADN4655/ADN4656 comprise multiple channel configurations, and the LVDS receivers on the ADN4655 and ADN4656 include a fail-safe mechanism to ensure a Logic 1 on the corresponding LVDS driver output when the inputs are floating, shorted, or terminated but not driven.For high speed operation with low jitter, the LVDS and isolator circuits rely on a 2.5 V supply. An integrated on-chip low dropout (LDO) regulator can provide the required 2.5 V from an external 3.3 V power supply. The devices are fully specified over a wide industrial temperature range and come in a 20-lead, wide body SOIC_W package with 5 kV rms isolation or in a 20-lead SSOP package with 3.75 kV rms isolation.Applications Isolated video and imaging data Analog front-end isolation Data plane isolation Isolated high speed clock and data links1 Protected by U.S. Patents 5,952,849; 6,873,065; 6,903,578; and 7,075,329. Other patents are pending.

The ADCMP580/ADCMP581/ADCMP582 are ultrafast voltagecomparators fabricated on the Analog Devices, Inc. proprietaryXFCB3 Silicon Germanium (SiGe) bipolar process. TheADCMP580 features CML output drivers, the ADCMP581features reduced swing ECL (negative ECL) output drivers, andthe ADCMP582 features reduced swing PECL (positive ECL)output drivers.All three comparators offer 180 ps propagation delay and 100 psminimum pulse width for 10 Gbps operation with 200 fs randomjitter (RJ). Overdrive and slew rate dispersion are typically lessthan 15 ps.The ?5 V power supplies enable a wide ?2 V to +3 V inputrange with logic levels referenced to the CML/NECL/PECLoutputs. The inputs have 50 ? on-chip termination resistorswith the optional capability to be left open (on an individualpin basis) for applications requiring high impedance input. The CML output stage is designed to directly drive 400 mV into50 ? transmission lines terminated to ground. The NECL outputstages are designed to directly drive 400 mV into 50 ? terminatedto ?2 V. The PECL output stages are designed to directly drive400 mV into 50 ? terminated to VCCO ? 2 V. High speed latchand programmable hysteresis are also provided. The differentiallatch input controls are also 50 ? terminated to an independentVTT pin to interface to either CML or ECL or to PECL logic.The ADCMP580/ADCMP581/ADCMP582 are available in a16-lead LFCSP.Applications Automatic test equipment (ATE) High speed instrumentation Pulse spectroscopy Medical imaging and diagnostics High speed line receivers Threshold detection Peak and zero-crossing detectors High speed trigger circuitry Clock and data signal restoration

DC2027A-B: Demo Board for the LTC4364 Surge Stopper with Ideal Diode.