AD202/AD204 is a low-cost, miniature isolation amplifier with small size, low power consumption, high accuracy, high CMR, wide bandwidth, high CMV isolation, etc., which can be used in various applications such as multi-channel data acquisition, current shunt measurement, motor control, process signal isolation, high-voltage instrumentation amplifier, etc.
The AD202 and AD204 are general‑purpose, two‑port, transformer‑coupled isolation amplifiers offered in SIP and DIP packages. They provide galvanic isolation for both signal and power, with selectable gain from 1 V/V to 100 V/V and high common‑mode rejection.
The document includes detailed electrical specifications, pin‑out diagrams, recommended power configurations (15 V DC for AD202, external clock driver for AD204), and guidance on adjustments, frequency response, and noise performance.
| Gain range | 1 V/V – 100 V/V |
|---|---|
| Power consumption (AD204) | 35 mW |
| Bandwidth (full‑power) | 5 kHz |
| CMRR (gain = 100 V/V) | 130 dB |
| Output resistance (AD204) | 3 kΩ |
| Leakage current (input to output @ 240 V rms) | 2 mA rms max |
The AD204 consumes 35 mW of power over the full signal range.