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AD8253

Analog Devices
ADI High Speed Programmable High Gain In-Amp
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Overview

The AD8253 is a digitally programmable instrumentation amplifier (PGIA) that offers G=1, 10, 100, and 1000 settings via a 2-bit interface. It combines high speed, low distortion, and high DC precision, featuring a 10 MHz bandwidth and a fast settling time of 0.8 microseconds to 0.001 percent.

Why Choose This Part

The device features high common-mode rejection (120 dB at G=1000) and exceptionally low offset drift of 1.1 microvolts per degree Celsius. Its digital gain control eliminates the need for external precision resistors or analog switches, ensuring gain accuracy and temperature stability.

Applications

Data Acquisition Systems
Used as a front-end gain stage for high-resolution ADCs where rapid channel switching and varying input levels are required.
Test and Measurement
Ideal for automated test equipment (ATE) and precision signal conditioning paths requiring gain control.
Medical Instrumentation
Suitable for multi-channel diagnostic equipment that requires high common-mode rejection and low noise amplification.

Getting Started

Engineers can evaluate performance using the AD8253-EVALZ board, which allows for direct connection to signal sources and power supplies via SMA connectors. For firmware integration, the gain is set by applying CMOS/TTL logic levels to the A0 and A1 pins, often driven directly by a microcontroller GPIO or a latch.

AD8253 Family

Part NumberDifferenceStock
AD8253ARMZ (Analog Devices Inc.) ARMZ 233

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