The ADS1100 is a precision, continuously self-calibratingAnalog-to-Digital (A/D) converter with differential inputs andup to 16 bits of resolution in a small SOT23-6 package.Conversions are performed ratiometrically, using the powersupply as the reference voltage. The ADS1100 uses anI2C-compatible serial interface and operates from a singlepower supply ranging from 2.7V to 5.5V.The ADS1100 can perform conversions at rates of 8, 16, 32,or 128 samples per second. The onboard ProgrammableGain Amplifier (PGA), which offers gains of up to 8, allowssmaller signals to be measured with high resolution. Insingle-conversion mode, the ADS1100 automatically powersdown after a conversion, greatly reducing current consumptionduring idle periods.The ADS1100 is designed for applications requiring highresolutionmeasurement, where space and power consumptionare major considerations. Typical applications includeportable instrumentation, industrial process control, and smarttransmitters.
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