Specialty Amplifiers

Specialty Amplifiers

Analog Devices offers a wide range of amplifiers for special functions and operations. From instrumentation to current sense, and differential to variable gain amplifiers, our wide portfolio of leading edge products sets more performance standards for next generation designs than anyone else in the market. Use our resources in reference designs (Circuits from the Lab®), design tools, tutorials, and application notes to help select the right amplifier and simplify your design.

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Amplifiers with Integrated Comparator and Reference

Analog Devices’ portfolio of highly integrated amplifier, comparator, and reference products provides flexible building blocks for a variety of analog applications. With low power and small solution size, these products are ideal for sensor interface and excitation, system monitoring, window comparators, and many other functions.

CATV Amplifiers

We are pleased to inform you that as of April 12, 2024, Analog Devices, Inc. has sold its cable amplifier business to Scientific Components Corporation (d/b/a Mini-Circuits) (“Mini-Circuits”). To purchase any of the following products, or for further inquiries about such products, please visit Mini-Circuits’ welcome page.

Charge Integrator Amplifiers

Analog Devices’ charge integrator amplifiers convert the charge acquired by X-ray or photodiode detectors to a voltage. The channels are composed of CMOS transistors, using typical high input impedance CMOS gates. The integrators generate charge dependent voltages using a range of selectable capacitance values that accommodate a broad range of input charge values. The integrators are followed by single-ended input to differential output voltage amplifiers where offset and low frequency noise voltages are subtracted from the input voltages.

Current Sense Amplifiers

Analog Devices’ current sense amplifiers offer excellent performance for a wide array of automotive, motor control and power management applications. These devices accurately amplify small voltages in the presence of large common-mode voltages, and provide high bandwidth, as well as level shifting and bidirectional capability. Excellent dc and ac accuracy over a wide temperature range from –40°C to +125°C minimizes errors in your measurement loop while not sacrificing on cost and package size.
Difference amplifiers can also often be used in certain current sense applications, especially for applications with >100V common mode. Difference Amplifier Product Selection Table

Device Power Supply (DPS) & Parametric Measurement Units (PMU) ATE

Analog Devices’ parametric measurement units (PMUs) and device power supply (DPS) products offer a flexible range of voltage and current source/measurement capability to meet the needs of a wide range of cost-sensitive test applications. With a proven track record, Analog Devices’ PMU and DPS products serve a wide variety of precision test application requirements, such as measurement and control for voltage and current. Analog Devices’ DPS and PMU products are equipped with unique precision measurement and control capability for today's demanding ATE solutions.

Difference Amplifiers

A difference amplifier is a special purpose amplifier designed to measure differential signals, otherwise known as a subtractor. A key feature of a difference amplifier is its ability to remove unwanted common mode signals, known as common mode rejection (CMR). Unlike most types of amplifiers, difference amplifiers are typically able to measure voltages beyond the supply rails, and are used in applications where large dc or ac common-mode voltages are present. They are ideal for current and voltage monitoring. Analog Devices offers a range of difference amplifiers, optimized for low distortion, low power, or high voltage performance.

Industrial 4-20mA Driver

Analog Devices portfolio of leading industrial d/a converters and drivers addresses the challenges of enhancing system accuracy, reliability, and overall functionality while reducing form factor and power dissipation. The products provide a range of programmable output ranges from standard 4–20 mA for current loop communication to ±10 V for actuator control. They simplify industrial system design by offering considerable control functionality and advanced on-chip diagnostics to maximize system up time. ADI industrial converters also eliminate the need for costly calibration routines needed by some traditional discrete architectures.

Logarithmic Transimpedance Amplifiers

Analog Devices’ Logarithmic Transimpedance Amplifiers accurately convert an input current to a logarithmically (“linear in dB”) related output voltage over an exceptionally large dynamic range of up to 200dB (from 1pA to 10mA). The logarithmic response automatically provides dynamic range compression, without requiring any control circuitry. This significantly reduces the dynamic range requirements on post-processing circuitry such as analog-to-digital converters. Precision laser trimming applied to products such as ADL5304, AD8304 enables very high accuracy measurements with only minimal calibration required. ADI’s Logarithmic Transimpedance Amplifiers are used in a variety of applications including optical power measurement, wide range baseband logarithmic compression, measurement of current and voltage ratios, and optical absorbance measurements.

LVDT Sensor Amplifiers

Analog Devices LVDT Sensor Amplifiers, together with linear variable differential transformers (LVDTs), can be used to convert transducer mechanical position to a unipolar or bipolar dc voltage with a high degree of accuracy and repeatability. The LVDT Sensor Amplifier provides both the excitation signal for the LVDT sensor and the output voltage proportional to a linear displacement which can be further digitized by an external Analog to Digital Converter (ADC). With the addition of a few external passive components the user can customize setup to set loop bandwidth, excitation frequency and gain for improved flexibility. These products are available to interface to a wide range of LVDTs, including half bridge configuration and standard 4-wire and 5-wire sensor types.

Optical Transimpedance Amplifiers

Analog Devices optical transimpedance amplifiers offer a complete, high performance, single chip solution for converting photodiode current into a differential voltage input. Supporting data rates from 155 Mbps to 11.1 Gbps, our transimpedance amplifiers are ideally suited for data communications and telecommunications applications supporting lay protocols including 1×, 2×, 4×, and 8× Fibre Channel, 10GBASE-LX4, SONET/SDH up to OC-192 with FEC, and 10 Gigabit Ethernet. Our transimpedance amplifiers feature low input referred noise current, high input current, and low power dissipation.

Pin Electronics (PE)/ Pin Drivers ATE

Analog Devices offers the ATE industry the best in pin electronics (PE), also referred to as pin drivers, for critical digital test applications. These high performance, integrated pin electronics/pin drivers provide critical test application solutions in one package, including digital drive and compare functions, active loads, and per-pin parametric measurement units, which are controlled by level setting DACs. Analog Devices’ integrated pin electronics/pin drivers are world class, widely popular, and second to none. They support speeds up to many Gbps at high accuracy and low power, all manufactured using ADI's proprietary fab processes, providing unmatched solutions for unique, cost-sensitive test applications.

Programmable Voltage and Current Drivers

Designed for programmable logic controllers (PLCs), distributed inputs/outputs, and industrial control systems, Analog Devices’ family of analog output conditioners provide a programmable current up to ±24 mA or a voltage up to ±12 V proportional to a control voltage signal. The control voltage is typically supplied by an external DAC with an output voltage range of 0 V to 4.096 V or 0 V to 2.5 V.

Sample/Track and Hold Amplifiers

Analog Devices offers a portfolio of sample-and-hold amplifiers and track and hold amplifiers that combine speed with precision. ADI sample-and-hold amplifiers can acquire a signal in 700 ns and hold it with a droop rate of 0.01 µV/µs. These devices are up to 14-bit accurate, with low aperture jitter and output impedance, and they are available in commercial, industrial, and military temperature ranges.

xDSL Line Drivers

Analog Devices xDSL line driver amplifiers provide industry-leading performance for cable set top boxes, cable modems, xDSL modems, and xDSL central office line cards. Due to our portfolio’s very low noise, high speed, and overall high performance, we provide designers with a top tier solution that is widely deployed as xDSL receivers. Applications for these products include wireless infrastructure, automated test equipment, multistandard radio receivers, point-to-point receivers and transmitters, instrumentation, and the military and aerospace industry.