FEATURES

LOW NOISE: 1nV/ÖHz

LOW THD+N: 0.0009% at 1kHz, G = 100

HIGH GBW: 100MHz at G = 1000

WIDE SUPPLY RANGE: ±9V to ±25V

HIGH CMRR: >100dB

BUILT-IN GAIN SETTING RESISTORS:

G = 1, 100

UPGRADES AD625

APPLICATIONS

HIGH QUALITY MICROPHONE PREAMPS

REPLACES TRANSFORMERS)

MOVING-COIL PREAMPLIFIERS

DIFFERENTIAL RECEIVERS

AMPLIFICATION OF SIGNALS FROM:

Strain Gages (Weigh Scale Applications)

Thermocouples

Bridge Transducers

DESCRIPTION

The INA103 is a very low noise, low distortion monolithic

instrumentation amplifier. Its current-feedback

circuitry achieves very wide bandwidth and excellent

dynamic response. It is ideal for low-level audio

signals such as balanced low-impedance microphones.

The INA103 provides near-theoretical limit noise performance

for 200W source impedances. Many industrial

applications also benefit from its low noise and

wide bandwidth.

Unique distortion cancellation circuitry reduces distortion

to extremely low levels, even in high gain. Its

balanced input, low noise and low distortion provide

superior performance compared to transformer-coupled

microphone amplifiers used in professional audio

equipment.

The INA103’s wide supply voltage (±9 to ±25V) and

high output current drive allow its use in high-level

audio stages as well. A copper lead frame in the plastic

DIP assures excellent thermal performance.

The INA103 is available in 16-pin plastic DIP and

SOL-16 surface-mount packages. Commercial and Industrial

temperature range models are available.