WCMCU-333 INA333 Low Power Precision Instrumentation Amplifier - (AD30574)

Description:

The INA333 is a low-power, precision instrumentation amplifier offering excellent accuracy. Its versatile 3-op amp design, small size, and low power make it ideal for a wide range of portable applications. A single external resistor adjusts the gain from 1 to 1000. The INA333 is designed to use the industry-standard gain equation: G = 1 + (100 kΩ/RG). The INA333 provides very low offset voltage (25 μV at 25°C, G ≥ 100), excellent offset voltage drift (0.2 μV/°C, G ≥ 100), and high common-mode rejection (100 dB at 25°C, G ≥ 10). It operates from power supplies as low as 1.8 V (±0.9 V) and has a quiescent current as low as 50 μA, ideal for battery-powered systems. Using self-calibration techniques to ensure excellent accuracy over the wide industrial temperature range, the INA333 also offers exceptionally low noise density (55 nV/√Hz) extending down to DC. The INA333 is specified over the TA temperature range of –55°C to +210°C.

Characteristics:

- Low offset voltage: 25 µV (maximum), G ≥ 100

- Low drift: 0.1 µV/°C, G ≥ 100

- Low noise: 50 nV/√Hz, G ≥ 100

- High CMRR: 100 dB (minimum), G ≥ 10

- Low input bias current: 200 pA (maximum)

- Power supply range: 1.8 V to 5.5 V

- Input voltage: (V–) +0.1 V to (V+) –0.1 V

- Output range: (V–) +0.05 V to (V+) –0.05 V

- Low quiescent current: 50 µA

- Operating temperature: –40 °C to +125 °C

- RFI Filtering Inputs

- 8-pin VSSOP and 8-pin WSON packages

Data sheet