INA217 is a low-noise, low-distortion, monolithic instrumentation amplifier. Current-feedback circuitry allows INA217 to achieve wide bandwidth and excellent dynamic response over a wide range of gain. INA217 is ideal for low-level audio signals such as balanced low-impedance microphones. Many industrial, instrumentation, and medical applications also benefit from its low noise and wide band- width. Unique distortion cancellation circuitry reduces distortion to extremely low levels, even in high gain. INA217 provides near-theoretical noise performance for 200Ω source imped- ance. INA217 features differential input, low noise, and low distortion that provides superior performance in profes- sional microphone amplifier applications. INA217 features wide supply voltage, excellent output voltage swing, and high output current drive, making it an optimal candidate for use in high-level audio stages. INA217 is available in the same DIP-8 and SOL-16 wide body packages and pinouts as the SSM2017. For a smaller package, see the INA163 in SO-14 narrow. INA217 is specified over the temperature range of –40°C to +85°C.
The INA217 instrumentation amplifier provides exceptionally low noise (1.3 nV/√Hz at 1 kHz with a 200 Ω source) and ultra‑low distortion (0.004 % THD+N at 1 kHz, G = 100). It features differential inputs, a wide supply range of ±4.5 V to ±18 V, and high output current capability, making it suitable for professional microphone pre‑amps and other low‑level audio applications.
The device is offered in DIP‑8 and SOL‑16 wide‑body packages, supports a gain range of 1 to 10 000 (G = 1 + 10 kΩ/RG), and operates from –40 °C to +85 °C. Detailed electrical characteristics, absolute maximum ratings, and typical application circuits are provided in the data sheet.
| Low Noise Voltage | 1.3 nV/√Hz at 1 kHz |
|---|---|
| THD+N | 0.004 % at 1 kHz, G = 100 |
| Bandwidth | 800 kHz at G = 100 |
| Supply Voltage Range | ±4.5 V to ±18 V |
| Gain Range | 1 to 10 000 (V/V) |
| Input Bias Current | 21 µA |
| Output Short‑Circuit Current | ±60 mA |
| Operating Temperature Range | –40 °C to +85 °C |
The device can be powered from ±4.5 V up to ±18 V.
It is offered in DIP‑8 and SOL‑16 wide‑body packages.