AD8428 is a low noise, low gain drift instrumentation amplifier with a fixed gain of 2000, access to internal nodes for flexibility, high accuracy DC performance, and excellent AC specifications.
The AD8428 is an ultralow‑noise instrumentation amplifier designed for high‑speed, low‑level signal measurement. It offers a fixed gain of 2000, excellent CMRR, and a bandwidth of 3.5 MHz, making it suitable for sensor interfaces, medical instrumentation, and patient monitoring.
The datasheet provides detailed specifications, pin configuration, absolute maximum ratings, and typical performance graphs. It also includes application notes, functional block diagrams, and ordering information for the 8‑pin SOIC package.
| Fixed Gain | 2000 |
|---|---|
| Bandwidth | 3.5 MHz |
| Slew Rate | 40 V/s |
| CMRR (DC to 60 Hz) | 130 dB |
| Input Noise Voltage | 1.5 nV/√Hz |
| Power Supply Range | +4 V to +18 V |
| Package | 8‑pin SOIC |
| Operating Temperature Range | -40 °C to +85 °C |
The AD8428 has a fixed gain of 2000.
It provides a 3.5 MHz bandwidth at a gain of 2000.
The device operates from +4 V to +18 V.
It is available in an 8‑lead SOIC package.