Description

8-Channel DAS with 18-Bit, 1 MSPS Bipolar Input, Simultaneous Sampling ADC Features: 18-bit ADC with 1 MSPS on all channels Input buffer with 1 MΩ minimum analog input impedance (RIN) Single 5 V analog supply and 1.71 V to 5.25 V VDRIVE Per channel selectable analog input ranges Bipolar single-ended: ±12.5 V, ±10 V, ±6.25 V, ±5 V, ±2.5 V Unipolar single-ended: 0 V to 12.5 V, 0 V to 10 V, 0 V to 5 V Bipolar differential: ±20 V, ±12.5 V, ±10 V, ±5 V Two bandwidth options: 25 kHz and 220 kHz, per channel Flexible digital filter, oversampling ratio up to 256 −40°C to +125°C operating range ±21 V input clamp protection with 6 kV ESD Pin to pin compatible to the AD7606B, AD7608, and AD7609 Performance 93 dB typical SNR for ±20 V bipolar differential range 102 dB SNR, oversampling by 32 −100 dB typical THD for all other ranges TUE = 0.05% of FSR maximum, external reference ±0.5 ppm/°C typical PFS and NFS error drift ±3 ppm/°C typical reference temperature coefficient Calibration and Diagnostics Per channel system phase, offset, and gain calibration Analog input open circuit detection feature Self diagnostics and monitoring features CRC error checking on read and write data and registers