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AD8250

Analog Devices
ADI Hi Speed Programmable Gain In-Amp
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Overview

The AD8250 is a high-speed, digitally programmable gain instrumentation amplifier (PGIA) that provides gains of 1, 2, 5, and 10 via a 2-bit word. It is designed for precision data acquisition systems, offering a high CMRR of 98 dB and a fast settling time of 615 ns to 0.001 percent.

Why Choose This Part

The device features high input impedance and low distortion, making it suitable for driving high-speed ADCs. Its ability to change gain settings in under 200 ns allows for dynamic range adjustment on a sample-by-sample basis in high-speed applications.

Applications

Data Acquisition Systems
Used in multichannel multiplexed systems where fast settling between different gain settings is critical for throughput.
Industrial Process Control
Ideal for interfacing with bridge sensors and high-impedance transducers in noisy environments.
Medical Instrumentation
Provides the precision and high common-mode rejection required for diagnostic signal conditioning.

Getting Started

When designing the PCB, place 0.1 uF bypass capacitors as close as possible to the power supply pins to maintain high-frequency performance. Ensure the digital gain control lines are routed away from the sensitive analog inputs to minimize crosstalk and noise injection.

AD8250 Family

Part NumberDifferenceStock
AD8250ARMZ (Analog Devices Inc.) ARMZ 1,328

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