Analog Devices Inc.

18-Bit, 1.25 MSPS PulSAR A/D Converter Features: Throughput: 1.25 MSPS INL: ±2 LSB typical, ±3 LSB max; ±8 ppm of full scale 18-bit resolution with no missing codes Dynamic range: 95.5 dB SINAD: 93.5 dB typical @ 20 kHz (VREF = 2.5 V) THD: −112 dB typical @ 20 kHz (VREF = 2.5 V) No pipeline delay (SAR architecture) Pb-free, 48-lead LQFP and 48-lead LFCSP Pin compatible with the AD7641 and other PulSAR ADCs 2.048 V internal reference: typical drift 10 ppm/°C; TEMP output Differential input range: ±VREF (VREF up to 2.5 V) Parallel (18-, 16-, or 8-bit bus) and serial 5 V/3.3 V/2.5 V interface SPI®/QSPI™/MICROWIRE™/DSP compatible Single 2.5 V supply operation Power dissipation 65 mW typical @ 1.25 MSPS with internal REF 2 W in power-down mode

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