AD7678

18-Bit, 2.5 LSB INL, 100 kSPS SAR ADC AD7678 FEATURES 18-bit resolution with no missing codes No pipeline delay (SAR architecture) Differential input range: ±VREF (VREF up to 5 V) Throughput: 100 kSPS INL: ±2.5 LSB max (±9.5 ppm of full scale) Dynamic range: 103 dB typ (VREF = 5 V) S/(N+D): 100 dB typ @ 2 kHz (VREF = 5 V) Parallel (18-,16-, or 8-bit bus) and serial 5 V/3 V interface SPI®/QSPI™/MICROWIRE™/DSP compatible On-board reference buffer Single 5 V supply operation Power dissipation:18 mW @ 100 kSPS 180 μW @ 1 kSPS 48-lead LQFP or 48-lead LFCSP package Pin-to-pin compatible upgrade of AD7674/AD7676/AD7679 APPLICATIONS CT scanners High dynamic data acquisition Geophone and hydrophone sensors - replacement (low power, multichannel) Instrumentation Spectrum analysis Medical instruments GENERAL DESCRIPTION The AD7678 is an 18-bit, 100 kSPS, charge redistribution SAR, fully differential analog-to-digital converter that operates on a single 5 V power supply. The part c...