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Texas Instruments INA500 1.7V to 5.5V Difference Amplifier has an integrated op-amp and matched resistors offering three gain options. The INA500A version offers a gain option of 1, while the INA500B and INA500C versions offer gain options of 0.50 and 0.25, respectively.
These are voltage-sensing INAs in difference amplifier configurations with high input impedance of > 1MΩ and low quiescent current of 13.5µA. The device achieves 75dB of minimum CMRR, an accurate ±0.05% maximum gain error, and 3.5mV of maximum offset (referred to output) in G = 1 configuration. The device can handle up to 27.5V (±13.75V) input common-mode voltage in G = 0.25 with 5.5V (±2.75V) supply voltage. The combination of specifications noted above is designed for various level translation and battery monitoring applications.
The precision-matched integrated resistors of the INA500 save BOM costs and board space by removing the need for precise and low-tolerance external resistors. The INA500 can interface directly to low-speed, 8-bit, and 12-bit analog-to-digital converters (ADC) and is an excellent choice for replacing discrete implementation of difference amplifiers built with commodity amplifiers and discrete resistors. The Texas Instruments INA500 is offered in standard 6-pin packages such as SOT-23 and SC70 and a space-saving X2SON package.
NOTE: The input resistor (RIN) values are 1.08MΩ for INA500A, 1.44MΩ for INA500B, and 1.68MΩ for INA500C.
