Part # AD7678 datasheet

Part Manufacturer: Analog Devices

Analog Devices

Part Description: AD7678 18-Bit 2.5 LSB INL 100 kSPS SAR ADC Data Sheet (Rev. 0)

Part Details:

18-Bit, 2.5 LSB INL, 100 kSPS SAR ADC AD7678 FEATURES FUNCTIONAL BLOCK DIAGRAM 18-bit resolution with no missing codes PDBUF REF REFGND DVDD DGND No pipeline delay (SAR architecture) AGND OVDD Differential input range: ±V AVDD AD7678 REF (VREF up to 5 V) SERIAL OGND Throughput: 100 kSPS REFBUFIN PORT INL: ±2.5 LSB max (±9.5 ppm of full scale) IN+ SWITCHED 18 D[17:0] Dynamic range: 103 dB typ (V CAP DAC REF = 5 V) IN­ BUSY S/(N+D): 100 dB typ @ 2 kHz (VREF = 5 V) PARALLEL INTERFACE RD Parallel (18-,16-, or 8-bit bus) and serial 5 V/3 V interface CLOCK CS SPI®/QSPITM/MICROWIRETM/DSP compatible PD CONTROL LOGIC AND MODE0 On-board reference buffer CALIBRATION CIRCUITRY RESET MODE1 Single 5 V supply operation Power dissipation: 18 mW @ 100 kSPS CNVST 180 µW @ 1 kSPS 03084­0­001 48-lead LQFP or 48-lead LFCSP package Figure 1. Functional Block Diagram Pin-to-pin compatible upgrade of AD7674/AD7676/AD7679

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AD7678.pdf Datasheet