AD7719

a Low Voltage, Low Power, Factory-Calibrated 16-/24-Bit Dual ⌺-⌬ ADC AD7719 FEATURES HIGH RESOLUTION ⌺-⌬ ADCs 2 Independent ADCs (16- and 24-Bit Resolution) Factory-Calibrated (Field Calibration Not Required) Output Settles in 1 Conversion Cycle (Single Conversion Mode) Programmable Gain Front End Simultaneous Sampling and Conversion of 2 Signal Sources Separate Reference Inputs for Each Channel Simultaneous 50 Hz and 60 Hz Rejection at 20 Hz Update Rate ISOURCE Select™ 24-Bit No Missing Codes—Main ADC 13-Bit p-p Resolution @ 20 Hz, 20 mV Range 18-Bit p-p Resolution @ 20 Hz, 2.56 V Range INTERFACE 3-Wire Serial SPI®, QSPI™, MICROWIRE™, and DSP Compatible Schmitt Trigger on SCLK POWER Specified for Single 3 V and 5 V Operation Normal: 1.5 mA Typ @ 3 V Power-Down: 10 ␮A (32 kHz Crystal Running) ON-CHIP FUNCTIONS Rail-Rail Input Buffer and PGA 4-Bit Digital I/O Port On-Chip Temperature Sensor Dual Switchable Excitation Current Sources Low-Side Power Switches Reference...