Description

Single Supply, 24-Bit, Sigma-Delta ADC with 10 V, 10 M Inputs and Buffered Low Level Inputs Features: 24-bit ADC with integrated analog front end Fast and flexible output rate: 1.25 SPS to 62.5 kSPS Channel scan data rate 12,422 SPS per channel (80 μs settling, sinc5 + sinc1) 20,618 SPS per channel (48 μs settling, sinc3) 85 dB rejection of 50 Hz and 60 Hz at 20 SPS per channel ±10 V inputs, 6 differential or 11 single-ended Pin absolute maximum rating: ±65 V Absolute input pin voltage up to ±20 V ≥10 MΩ impedance Low level direct ADC input ±VREF inputs, 2 differential or 4 single-ended Absolute input pin voltage, AVDD to AVSS True rail-to-rail analog input buffers On-chip 2.5 V reference ±0.12% accuracy at 25°C, ±5 ppm/°C (typical) drift Internal or external clock Power supplies AVDD to AVSS = 4.5 V to 5.5 V IOVDD to DGND = 2 V to 5.5 V Total IDD (AVDD + IOVDD) = 6.15 mA Temperature range: −40°C to +105°C 3-wire or 4-wire serial digital interface (Schmitt trigger on SCLK) SPI, QSPI, MICROWIRE, and DSP compatible