INA2128UA

The INA2128UA is a dual-channel instrumentation amplifier designed for precision signal conditioning. It operates from a single or dual supply voltage of 4.5V to 36V, making it suitable for a variety of industrial and medical applications. The amplifier features a low input offset voltage of 50µV maximum and an input offset drift of 0.5µV/°C, ensuring accurate measurements over temperature. With a gain range from 1 to 10000 V/V, it can be configured for different signal levels. The device achieves a high common-mode rejection ratio of 120dB minimum, which is critical for rejecting common-mode noise in differential measurements. The INA2128UA also includes current feedback topology and built-in overvoltage protection, enhancing robustness in harsh environments. The amplifier is housed in a compact SOIC-16 package (DW code) with dimensions 10.3 mm × 10.3 mm, suitable for space-constrained designs. Operating temperature range is -40°C to 85°C, covering extended industrial conditions. Key specifications include a typical quiescent current of 0.7mA, a bandwidth of 1.3MHz at minimum gain, and a low noise density of 8nV/√Hz at 1kHz. The gain error is limited to 0.5% and gain nonlinearity to 0.002%, ensuring high linearity. This amplifier is ideal for medical instrumentation, industrial process control, and data acquisition systems where precision and low noise are required.