The INA163 is a very low-noise, low-distortion, monolithic instrumentation amplifier. Its current-feedback circuitry achieves very wide bandwidth and excellent dynamic response over a wide range of gain. It is ideal for low-level audio signals such as balanced low- impedance microphones. Many industrial, instrumen- tation, and medical applications also benefit from its low noise and wide bandwidth. Unique distortion cancellation circuitry reduces distor- tion to extremely low levels, even in high gain. The INA163 provides near-theoretical noise performance for 200Ω source impedance. Its differential input, low noise, and low distortion provide superior performance in professional microphone amplifier applications. The INA163’s wide supply voltage, excellent output voltage swing, and high output current drive allow its use in high-level audio stages as well. The INA163 is available in a space-saving SO-14 surface-mount package, specified for operation over the –40°C to +85°C temperature range.
The INA163 is a monolithic instrumentation amplifier designed for low‑level audio signals such as balanced low‑impedance microphones. It offers very low voltage noise (1 nV/√Hz at 1 kHz) and low total harmonic distortion, making it suitable for professional microphone pre‑amps and other high‑performance audio applications.
The device is supplied in a space‑saving SO‑14 surface‑mount package and operates over a wide supply range (±4.5 V to ±18 V). Gain is set with an external resistor, and the amplifier provides high output current drive (up to ±60 mA) and excellent output swing. Detailed absolute‑maximum ratings, typical characteristics, and application circuits are provided in the datasheet.
| Voltage Noise (1 kHz) | 1 nV/√Hz |
|---|---|
| Gain Range | 1 to 10000 V/V |
| Bandwidth (G = 100) | 800 kHz |
| Supply Voltage Range | ±4.5 V to ±18 V |
| Package | SO‑14 surface‑mount |
The INA163 can be configured for a gain from 1 to 10 000 V/V.
The voltage noise is 1 nV/√Hz at 1 kHz.
It operates from ±4.5 V up to ±18 V.
The device is offered in an SO‑14 surface‑mount package.