AD7951 PDF Datasheet
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Description
This is 14-Bit Programmable Input ADC.
14-Bit, 1 MSPS, Unipolar, Bipolar Programmable Input PulSAR® ADC AD7951
FEATURES
Multiple pins, software programmable input ranges: 5 V, 10 V, ±5 V, ±10 V Pins or serial SPI® compatible input ranges, mode selection Throughput 1 MSPS (warp mode) 800 kSPS (normal mode) 670 kSPS (impulse mode) 14-bit resolution with no missing codes INL: ±0.3 LSB typ, ±1 LSB max (±61 ppm of FSR) SNR: 85 dB @ 2 kH- iCMOS® process technology 5 V internal reference: typical drift 3 ppm, °C; TEMP output No pipeline delay (SAR architecture) Parallel (14- or 8-bit bus) and serial 5 V, 3.3 V interface SPI-, QSPI™-, MICROWIRE™-, DSP-compatible Power dissipation: 10 mW @ 100 kSPS 235 mW @ 1 MSPS 48-lead LQFP and LFCSP (7 mm × 7 mm) packages
FUNCTIONAL BLOCK DIAGRAM
TEMP REFBUFIN REF REFGND VCC VEE DVDD AGND AVDD PDREF PDBUF IN+ IN SWITCHED CAP DAC REF DGND OVDD OGND
REF AMP
AD7951
SERIAL DATA PORT SERIAL CONFIGURATION 14 PORT
D[13:0] SER, PAR BYTESWAP PARALLEL INTERFACE
CNVST PD RESET
CLOCK CONT.