AD7951

www.DataSheet4U.com 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 kHz 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 CONTROL LOGIC AND CALIBRATION CIRCUITRY OB/2C BUSY RD CS 06396-001 WARP IMPULSE BIPOLAR TEN Figure 1. Table 1. 48-Lead 14-/16-/18-Bit PulSAR Selection Type Pseudo Differential 100 kSPS to 250 kSPS AD7651 AD7660 AD7661 AD7610 AD7663 AD7675 500 kSPS to 570 kSPS AD7650 AD7652 AD7664 AD7666 AD7665 570 kSPS to 1000 kSPS AD7653 AD7667 >1000 kSPS APPLICATIONS Process control Medical instruments High speed data acquisition Digital signal processing Instrumentation Spectrum analysis ATE True Bipolar T...