The ADuM4154 is an SPIsolator™ digital isolator optimized for a serial peripheral interface (SPI) that includes support for up to four slave devices. Based on the Analog Devices, Inc., iCoupler® chip scale transformer technology, the low propagation delay and jitter in the CLK, MO/SI, MI/SO, and SS SPI bus signals support SPI clock rates of up to 17 MHz.The ADuM4154 isolator also provides a slave select multiplexing system that allows up to four slave devices to be serviced from one isolator. When a target slave is selected, the slave select signal propagates to the desired output with low propagation delay, allowing tight timing control. The isolated SSx is addressed through a 250 kbps low speed, 2-channel address bus, allowing the target slave device to be changed in as little as 2.5 μs.Applications Industrial programmable logic controllers (PLCs) Sensor isolation 

The analog output ADXL356 and the digital output ADXL357 are low noise density, low 0 g offset drift, low power, 3-axis accelerometers with selectable measurement ranges. The ADXL356B supports the ±10 g and ±20 g ranges, the ADXL356C supports the ±10 g and ±40 g ranges, and the ADXL357 supports the ±10 g, ±20 g, and ±40 g ranges.The ADXL356/ADXL357 offer industry leading noise, minimal offset drift over temperature, and long-term stability, enabling precision applications with minimal calibration.The low drift, low noise, and low power ADXL357 enables accurate tilt measurement in an environment with high vibration. The low noise of the ADXL356 over higherfrequencies is ideal for condition-based monitoring and other vibration sensing applications.The ADXL357 multifunction pin names may be referenced only by their relevant function for either the serial peripheral interface (SPI) or limited I2C interface.Applications Inertial measurement units (IMUs)/altitude and heading reference systems (AHRSs) Platform stabilization systems Structural health monitoring Seismic imaging Tilt sensing Robotics Condition monitoring

The ADXRS645 is a high performance angular rate sensor with excellent vibration immunity for use in high temperature environments. The ADXRS645 is manufactured using the Analog Devices, Inc., patented high volume BiMOS surface-micromachining process with years of proven field reliability. An advanced, differential, quad sensor design provides superior acceleration and vibration rejection.The output signal, RATEOUT, is a voltage proportional to the angular rate about the axis normal to the package lid. The measurement range is a minimum of ±2000°/sec, and may be extended to ±5000°/sec with the addition of a single external resistor. The output is ratiometric with respect to a provided reference supply. Other external capacitors are required for operation.A temperature output is provided for compensation techniques. Two digital self-test inputs electromechanically excite the sensor to test proper operation of both the sensor and the signal conditioning circuits. The ADXRS645 is available in a 8 mm × 9 mm × 3 mm, 15-lead brazed lead tri in-line package.APPLICATIONS Down hole measurements for geological exploration Extreme high temperature industrial applications Severe mechanical environments

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 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