AD7877

Data Sheet FEATURES 4-wire touch screen interface LCD noise reduction feature (STOPACQ pin) Automatic conversion sequencer and timer User-programmable conversion parameters On-chip temperature sensor: −40°C to +85°C On-chip 2.5 V reference On-chip 8-bit DAC 3 auxiliary analog inputs 1 dedicated and 3 optional GPIOs 2 direct battery measurement channels (0.5 V to 5 V) 3 interrupt outputs Touch-pressure measurement Wake up on touch function Specified throughput rate of 125 kSPS Single supply, VCC of 2.7 V to 5.25 V Separate VDRIVE level for serial interface Shutdown mode: 1 µA maximum 32-lead, LFCSP, 5 mm × 5 mm package 25-ball,WLCSP, 2.5 mm × 2.8 mm package Qualified for automotive applications APPLICATIONS Personal digital assistants Smart hand-held devices Touch screen monitors Point-of-sale terminals Medical devices Cell phones Pagers GENERAL DESCRIPTION The AD7877 is a 12-bit, successive approximation ADC with a synchronous serial interface and low on resistance switches fo...