The AD627 from Analog Devices is a micropower instrumentation amplifier that operates from a wide supply range (+2.2 V to +18 V single‑supply or +5 V to +15 V dual‑supply) and provides rail‑to‑rail output swing. It offers a gain range from 5 (no external resistor) up to 1,000 with one external resistor, delivering low offset, low noise, and high CMRR.
The datasheet includes detailed specifications, typical performance graphs, application circuit examples such as bridge and thermocouple amplifiers, and ordering information for both DIP and SOIC packages.
| Supply Voltage Range (single supply) | +2.2 V to +18 V |
|---|---|
| Quiescent Current | 85 µA max |
| Gain Range | 5 (no resistor) to 1,000 |
| Input Offset Voltage (AD627B) | 125 µV max |
| Input Bias Current | 10 nA max |
| Bandwidth (G=5) | 80 kHz |
| CMRR (G=5) | 77 dB min |
| Output Swing (single supply +5 V) | 0 V to +3.7 V |
Gain is set with a single external resistor; without a resistor the gain is 5, and with a resistor it can be programmed up to 1,000.
The AD627 draws a maximum of 85 µA of supply current.