TEXAS INSTRUMENTS INA333 Instrument Amplifier, VSSOP-8, 1.8V to 5.5V

The TEXAS INSTRUMENTS INA333AIDGKR is a low-power, precision instrumentation amplifier offering exceptional accuracy for demanding applications. Its versatile three-operational-amplifier design, combined with a compact size and minimal power consumption, makes it the ideal choice for a wide spectrum of portable and battery-operated systems.

A key feature is its flexible gain configuration; a single external resistor sets any gain from 1 to 1000 using the industry-standard equation: G = 1 + (100kΩ/RG). This amplifier delivers outstanding performance metrics, including a very low input offset voltage (25µV at G ≥100), excellent offset voltage drift (0.1µV/°C at G ≥100), and high common-mode rejection (100dB at G ≥10).

Operating from power supplies as low as 1.8V (±0.9V) with a quiescent current of just 50µA, it is perfectly suited for long-life battery applications. It utilises auto-calibration techniques to maintain excellent precision across the extended industrial temperature range from -40°C to 125°C. Furthermore, it offers exceptionally low noise density (50nV/√Hz at G ≥100) that extends down to DC, along with RFI-filtered inputs for enhanced signal integrity in noisy environments.

The device is offered in a space-saving VSSOP-8 package, features a rail-to-rail output stage, and is classified as a green product, manufactured without antimony or brominated flame retardants (no Sb/Br).