ADAS1128

www.DataSheet4U.com 128 Channel, 24-bit Current to Digital ADC ADAS1128 GENERAL DESCRIPTION The ADAS1128 is a 128-Channel, current to digital analog-todigital converter ADC. It contains 128 low power, low noise, low input current integrators, simultaneous sample-holds and two high speed, high resolution ADCs with configurable sampling rate and resolution up to 24 bits. All converted channel results are output on a single LVDS selfclocked serial interface reducing external hardware. An SPI-compatible serial interface allows configuration of the ADC using the SDI input. The SDO output allows one to daisy chain several ADCs on a single, 3-wire bus. It uses the separate supply VIO to reduce digital noise effect on the conversions. The ADAS1128 is housed in a mini-BGA package, 10mm by 10mm. Preliminary Technical Data FEATURES 128 Channel low level currents- to-digital converter Up to 24 bit resolution Up to 20ksps (50μs integration time) Simultaneous Sampling Ultra Low noise ( down to 0.4fC (2500e-) ) User adjustable full-scale range INL: ±0.025% of Reading ±1ppm of FSR Very Low Power dissipation: 4.5 mW/channel LVDS/CMOS self-clocked serial interface Daisy-chain Configuration registers On-Board Temperature Sensor and Reference Buffer Mini-BGA package 10mm × 10mm Low-cost external components APPLICATIONS CT Scanner Data Acquisition Photodiode Sensors and Power Monitoring Spectroscopy High Channel Count Data Acquisition Systems (current or voltage input) SUPPORT TOOLS Evaluatio...