16-Bit Lower Power PulSAR™ ADCs – Schematic Diagrams

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16 Bit Lower Power PulSAR™ ADCs

The AD7988-1/ AD7988-5 are 16-bit, successive approximation, analog-to-digital converters (ADC) that operate from a single power supply, VDD. The AD7988-1 offers a 100kSPS throughput and the AD7988-5 offers 500kSPS throughput. They are low power, 16-bit sampling ADCs with a versatile serial interface port. On the CNV rising edge, it samples an analog input IN+ between 0 V to REF with respect to a ground sense IN-. The reference voltage, REF, is applied externally and can be set independent of the supply voltage, VDD.

The SPI-compatible serial interface also features the ability, using the SDI input, to daisy-chain several ADCs on a single, 3-wire bus. It is compatible with 1.8 V, 2.5 V, 3 V, or 5 V logic, using the separate supply VIO.

The AD7988 generics are housed in a 10-lead MSOP or a 10- lead QFN (LFCSP) with operation specified from -40°C to +125°C.

  • Battery-powered equipment
  • Low power Data Acquisition systems
  • Portable Medical instruments
  • ATE equipment
  • Data acquisitions
  • Communications

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