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Data Sheet
18-Bit, 1 MSPS PulSAR ADC in MSOP/LFCSP AD7982
FEATURES
FUNCTIONAL BLOCK DIAGRAM
High performance
2.5V TO 5V 2.5V
True differential analog input range: ±VREF
0 V to VREF with VREF between 2.5 V to 5 V
Easy to drive with the ADA4941-1 or ADA4940-1 Throughput: 1 MSPS
Zero latency architecture 18-bit resolution with no missing codes INL: ±1 LSB typical, ±2 LSB maximum
±10V, ±5V, ..
ADA4940-1/ ADA4941-1
REF VDD VIO
IN+
SDI
AD7982 SCK
IN– GND
SDO CNV
1.8V TO 5V
3- OR 4-WIRE INTERFACE (SPI, CS DAISY CHAIN)
06513-001
Dynamic range: 99 dB, VREF = 5 V SNR: 98 dB at fIN = 1 kHz, VREF = 5 V THD: −119 dB at fIN = 1 kHz, VREF = 5 V
Figure 1.