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TMP64-Q1: Recommended ADC with precision, built-in, current current?

Part Number: TMP64-Q1
Other Parts Discussed in Thread: ADS112C04, ADS122C04, ADS112U04, ADS122U04, ADS1260, ADS1263, ADS1262, ADS124S06, ADS124S08, ADS1220, ADS1261


The spec sheet for the TMP64-Q1 describes biasing the thermistor with a precision current source which could be generated by an ADC.

Would someone please recommend an ADC with a precision current source ideal for this part?

Preferable an ADC with I2C.

Thank you

  • Hi Craig,

    For what application would this be? 

    I would recommend either the ADS122C04 (24-bit) or ADS112C04 (16-bit). Both of these devices have 2x well-matched current sources and an I2C interface. The current output options on this device are 10, 50, 100, 250, 500, 1000, and 1500 µA.

    The TMP64-Q1 would be best optimized with the 50 µA setting.

    For other interfaces there are the below recommendations: 

    UART - ADS122U04 (24-bit) and ADS112U04 (16-bit)

    SPI - ADS124S08, ADS124S06, ADS1220, ADS1260 / ADS1261, ADS1262 / ADS1263