INA103 is a low noise, low distortion monolithic instrumentation amplifier from AD. It achieves very wide bandwidth and excellent dynamic response.
The INA103 provides ultra‑low input noise (1 nV/√Hz) and very low total harmonic distortion, making it suitable for precision audio and sensor applications. It offers built‑in gain‑setting resistors for gains of 1 and 100, with external resistor options for any gain up to 1000 V/V.
The device operates from ±9 V to ±25 V, draws 9–12.5 mA quiescent current, and features >100 dB CMRR. Typical performance curves, pin configurations, and packaging details are included for both PDIP and SOIC versions.
| Gain range | 1 – 1000 V/V |
|---|---|
| Input noise voltage (1 kHz) | 1 nV/√Hz |
| Supply voltage range | ±9 V to ±25 V |
| Quiescent current | 9 – 12.5 mA |
| CMRR | >100 dB |
| Bandwidth (gain = 1) | 6 MHz (small‑signal) |
The INA103 can be set for gains from 1 to 1000 V/V.
It operates from ±9 V up to ±25 V.
The input noise voltage is 1 nV/√Hz at 1 kHz.
Typical quiescent current is between 9 mA and 12.5 mA.