The AD7641 is a 18-bit, 2 MSPS, charge redistribution SAR, fully differential analog-to-digital converter that operates from a single 2.5 V power supply. The part contains a high-speed 18-bit sampling ADC, an internal conversion clock, an internal reference buffer, error correction circuits, and both serial and parallel system interface ports. It features a very high sampling rate mode (Warp) and a fast mode (Normal) for asynchronous conversion rate applications. The AD7641 is hardware factory calibrated and comprehensively tested to ensure ac parameters such as signal-to-noise ratio (SNR) and total harmonic distortion (THD) in addition to the more traditional dc parameters of gain, offset and linearity. Operation is specified from −40°C to +85°C. PRODUCT HIGHLIGHTS * Fast Throughput. The AD7641 is a 2 MSPS, charge redistribution, 18-bit SAR ADC. * Superior Linearity. The AD7641 has no missing 18-bit code. * Internal Reference. The AD7641 has a 2.048 V internal reference with a typical drift of ±10 ppm/°C and an on-chip TEMP sensor. * Single-Supply Operation. The AD7641 operates from a 2.5 V single supply. * Serial or Parallel Interface. Versatile parallel (16- or 8-bit bus) or 2-wire serial interface arrangement compatible with 2.5 V, 3.3 V, or 5 V logic. APPLICATIONS * Medical instruments * High dynamic data acquisition * Instrumentation * Spectrum analysis * ATE * 18-bit resolution with no missing codes * 2.5 V internal low drift reference Throughput: 2 MSPS (Warp mode) 1.5 MSPS (Normal mode) * Differential input range: ± VREF (VREF up to 2.5 V) * INL: ±2 LSB typical https://elecena.pl/product/691399/18-bit-2-msps-sar-adc 2008-07-05 https://elecena.pl/product/691399/18-bit-2-msps-sar-adc 2018-03-29 https://elecena.pl/product/691399/18-bit-2-msps-sar-adc 2025-01-17