The LTC2983 measures a wide variety of temperature sensors and digitally outputs the result, in °C or °F, with 0.1°C accuracy and 0.001°C resolution. The LTC2983 can measure the temperature of virtually all standard (type B, E, J, K, N, S, R, T) or custom thermocouples, automatically compensate for cold junction temperatures and linearize the results. The device can also measure temperature with standard 2-, 3- or 4-wire RTDs, thermistors and diodes. It has 20 reconfigurable analog inputs enabling many sensor connections and configuration options. The LTC2983 includes excitation current sources and fault detection circuitry appropriate for each type of temperature sensor.The LTC2983 allows direct interfacing to ground referenced sensors without the need for level shifters, negative supply voltages, or external amplifiers. All signals are buffered and simultaneously digitized with three high accuracy, 24-bit ΔΣ ADCs, driven by an internal 10ppm/°C (maximum) reference.Applications Direct Thermocouple Measurements Direct RTD Measurements Direct Thermistor Measurements Custom Sensor Applications

The LT3091 is a 1.5A, low dropout negative linear regulator that is easily paralleled to increase output current or spread heat on surface mounted boards. Designed with a precision current reference followed by a high performance rail-to-rail voltage buffer, this regulator finds use in applications requiring precision output, high current with no heat sink, output adjustability to zero and low dropout voltage. The device can also be configured as a 3-terminal floating regulator.The LT3091 features fast transient response, high PSRR and output noise as low as 18μVRMS. The LT3091 generates a wide output voltage range (0V to –32V) while maintaining unity gain operation. This yields virtually constant bandwidth, load regulation, PSRR and noise, independent of the programmed output voltage.The LT3091 supplies 1.5A at a typical dropout voltage of 300mV. Operating quiescent current is nominally 1.2mA and drops to << 1μA in shutdown. A single resistor adjusts the LT3091’s precision programmable current limit. The device’s positive or negative current monitor either sources a current (0.25mA/A) or sinks a current (0.5mA/A) proportional to output current. Built-in protection includes reverse output protection, internal current limit with foldback and thermal shutdown with hysteresis.Applications Post Regulator for Switching Supplies Low Noise Instrumentation and RF Supplies Rugged Industrial Supplies Precision Power Supplies

The HMC1165 is a monolithic microwave integrated circuit (MMIC), voltage controlled oscillator (VCO) that integrates a resonator, a negative resistance device, and a varactor diode, 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 output power is 8 dBm typical from a 5 V supply voltage. The VCO is housed in a RoHS-compliant 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 HMC4069LP4E is an Integer-N synthesizer which incorporates a 10 to 1300MHz digital phase-frequency detectorwith a 10 to 2900MHz 5-bit frequency counter. It is intended for use in low phase noise synthesizer applications.The combination of high frequency of operation along with its ultra low phase noise floor make possible synthesizerswith wide loop bandwidth and low N resulting in fast switching and very low phase noise. When used in conjunctionwith a differential loop amplifier, the HMC4069LP4E generates output voltages that can be used to phase lock a VCOto a reference oscillator.The device is packaged in a 24-pin, 4 x 4mm leadless QFN surface mount package with an exposed ground paddlefor improved RF and thermal performance.Applications Point-to-point radios Satellite communication systems Military applications Sonet clock generation

The ADA4350 is an analog front end for photodetectors or othersensors whose output produces a current proportional to thesensed parameter or voltage input applications where the systemrequires the user to select between very precise gain levels tomaximize the dynamic range.The ADA4350 integrates a FET input amplifier, a switching network,and an ADC driver with all functions controllable via a serialperipheral interface (SPI) or parallel control logic into a singleIC. The FET input amplifier has very low voltage noise and currentnoise making it an excellent choice to work with a wide range ofphotodetectors, sensors, or precision data acquisition systems.Its switching network allows the user individual selection of upto six different, externally configurable feedback networks; byusing external components for the feedback network, the usercan more easily match the system to their desired photodetector orsensor capacitance. This feature also allows the use of low thermaldrift resistors, if required.The design of the switches minimizes error sources so that theyadd virtually no error in the signal path. The output driver canbe used in either single-ended or a differential mode and isideal for driving the input of an ADC.The ADA4350 can operate from a single +3.3 V supply or a dual±5 V supply, offering user flexibility when choosing the polarity ofthe detector. It is available in a Pb-free, 28-lead TSSOP package andis specified to operate over the −40°C to +85°C temperature range.Multifunction pin names may be referenced by their relevantfunction only.Applications Current to voltage (I to V) conversions Photodiode preamplifiers Chemical analyzers Mass spectrometry Molecular spectroscopy Laser/LED receivers Data acquisition systems

The HMC1122 is a 6-bit digital attenuator operating from 0.1 GHz to 6 GHz with a 31.5 dB attenuation control range in 0.5 dB steps.The HMC1122 is implemented in a silicon process, offering very fast settling time, low power consumption, and high ESD robustness. The device features safe state transitions and optimized for excellent step accuracy and high linearity over frequency and temperature range. The RF input and output are internally matched to 50 Ω and do not require any external matching components. The design is bidirectional; therefore, the RF input and output are interchangeable.The HMC1122 operates on a single supply ranging from 3.3 V to 5 V with no performance change due to an on-chip regulator.The device incorporates a driver that provides both serial and parallel control of the attenuator. The device also features a user-selectable power-up state and a serial output port for cascading other serial controlled components.The HMC1122 comes in a RoHS compliant, compact, 4 mm × 4 mm LFCSP package, and is pin compatible to the HMC624A.A fully populated evaluation board is available. Applications Cellular infrastructure Microwave radios and very small aperture terminals (VSATs) Test equipment and sensors IF and RF designs

The LTM4652 is a source/sink dual ±25A or single ±50A output switching mode step-down DC/DC μModule® (micromodule) regulator with ±1.5% total DC output error. Included in the package are the switching controllers, power MOSFETs, inductors and all supporting components. Operating from an input voltage range of 4.5V to 18V, the LTM4652 supports two outputs with an output voltage range of 0.6V to 7.5V, each set by a single external resistor. Its high efficiency design delivers up to ±25A continuous current for each output. Only a few input and output capacitors are needed. Adjustable control loop compensation allows for fast transient response to minimize output capacitance when powering FPGAs, ASICs, and processors.Fault protection features include input and output overvoltage and bidirectional overcurrent protection. The LTM4652 is offered in a 16mm × 16mm × 4.92mm BGA package.APPLICATIONS Test and Measurement Instrumentation Telecom and Networking Equipment Industrial Equipment

The ADAU1850 is a codec with three inputs and one output that incorporates one digital signal processor. The path from the analog input to the DSP core to the analog output is optimized for low latency and is ideal for noise canceling earphones. With the addition of a few passive components, the ADAU1850 provides a complete headset solution.The ADAU1850 is provided in a small, 28-ball, 2.957 mm × 1.757 mm wafer level chip scale package (WLCSP).APPLICATIONS Noise canceling handsets, headsets, and headphones Bluetooth active noise canceling (ANC) handsets, headsets, and headphones Personal navigation devices Digital still and video cameras Musical instrument effect processors Multimedia speaker systems Smartphones

The ADL8105 is a gallium arsenide (GaAs), monolithic microwave integrated circuit (MMIC), pseudomorphic high electron mobility transistor (pHEMT), low noise wideband amplifier that operates from 5 GHz to 20 GHz.The ADL8105 provides a typical gain of 27 dB at 12 GHz to 17 GHz, a 1.8 dB typical noise figure from 12 GHz to 17 GHz, a typical output third-order intercept (OIP3) of 30.5 dBm at 12 GHz to 17 GHz, and a saturated output power (PSAT) of up to 20.5 dBm, requiring only 90 mA from a 5 V supply voltage. The power dissipation can be lowered at the expense of OIP3 and output power (POUT). The ADL8105 also features inputs and outputs that are internally matched to 50 Ω. The RFIN and RFOUT pins are internally ac-coupled, and the bias inductor is also integrated, making it ideal for surface-mounted technology (SMT)-based, high capacity microwave radio applications.The ADL8105 is housed in an RoHS-compliant, 2 mm × 2 mm, 8-lead LFCSP package.APPLICATIONSTelecommunicationsSatellite communicationsMilitary radarWeather radarElectronic warfareInstrumentation

The ADN4622/ADN4624 are quad-channel, signal isolated, low-voltage differential signaling (LVDS) buffers that operate at up to 2.5 Gbps with very low jitter. The devices integrate Analog Devices, Inc., iCoupler® technology, enhanced for high-speed operation to provide drop-in galvanic isolation of LVDS signal chains. AC coupling and/or level shifting to the LVDS receivers and from the LVDS drivers allows isolation of other high-speed signals such as current-mode logic (CML).The ADN4622/ADN4624 include a refresh mechanism to monitor the input and output states and ensure they remain the same in the absence of data transitions. For lower power consumption and high-speed operation with low jitter, the LVDS and isolator circuits rely on 1.8 V supplies. The ADN4622/ADN4624 are fully specified over a wide industrial temperature range and are available in a 28-lead, wide-body, finer pitch SOIC_W_FP package with 8.3 mm creepage and clearance (for 5.7 kV rms or 8 kVPEAK surge and impulse voltages and reinforced insulation at AC mains voltages) or 6 mm × 6 mm LFCSP package with 1.27 mm creepage and clearance (for basic/functional isolation).APPLICATIONS Isolated video and imaging data Analog front-end isolation Data plane isolation Isolated high speed clock and data links Multi-gigabit SERDES Board-to-board optical replacement (for example, short reach fiber)