Ultra low-power 16-bit analog-to-digital converters

Analog Devices AD7988-x 16-bit ultra-low power analog-to-digital converters (ADCs) are now available from Mouser. The devices are designed as 16-bit, successive approximation ADCs operating from a single power supply, VDD. The AD7988-1 provides a 100kSPS throughput, while the AD7988-5 provides a 500kSPS throughput. The devices feature a versatile serial interface port. The SPI-compatible serial interface offers the ability to daisy-chain several ADCs on a single 3-wire bus using the SDI input. AD7988-1 and AD7988-5 are compatible with 1.8V, 2.5V, 3V, or 5V logic using the separate supply, VIO. On the CNV rising edge, the AD7988 ADCs sample an analog input, IN+, between 0 V to VREF with respect to a ground sense, IN-. The reference voltage, REF, is applied externally and designers can set it independent of the supply voltage, VDD. The AD7988-1/AD7988-5 ADCs are housed in a 10-lead MSOP or a 10-lead LFCSP (QFN) and operate from -40C to +125C. The devices are suitable foe battery-powered equipment, low power data acquisition systems, portable medical instruments, ATE equipment, data acquisitions and communications.