The AD7631 is an 18-bit, charge redistribution, successive approximation register (SAR), architecture analog-to-digital converter (ADC) fabricated on Analog Devices, Inc.’s iCMOS high voltage process. The device is configured through hardware or via a dedicated write-only serial configuration port for input range and operating mode. The AD7631 contains a high speed 18-bit sampling ADC, an internal conversion clock, an internal reference (and buffer), error correction circuits, and both serial and parallel system interface ports. A falling edge on CNVST samples the fully differential analog inputs on IN+ and IN−. The AD7631 features four different analog input ranges. Power is scaled linearly with throughput. Operation is specified from −40°C to +85°C. APPLICATIONS * Process controls * High speed data acquisition * Digital signal processing * Spectrum analysis * ATE * Multiple pins/software-programmable input ranges +5 V (10 V p-p), +10 V (20 V p-p), ±5 V (20 V p-p), ±10 V (40 V p-p) * Pins or serial SPI-compatible input ranges/mode selection https://elecena.pl/product/691390/18-bit-250-ksps-differential-programmable-input-pulsar-adc 2008-07-05 https://elecena.pl/product/691390/18-bit-250-ksps-differential-programmable-input-pulsar-adc 2018-03-29 https://elecena.pl/product/691390/18-bit-250-ksps-differential-programmable-input-pulsar-adc 2025-01-22