AD7952 Datasheet | Analog Devices

.. 14-Bit, 1 MSPS, Differential, Programmable Input Pul SAR® ADC AD7952 Features Multiple pins/software-programmable input ranges +5 V (10 V p-p), +10 V (20 V p-p), ±5 V (20 V p-p), ±10 V (40 V p-p) Pins or serial SPI®-patible input ranges/mode selection Throughput 1 MSPS (warp mode) 800 k SPS (normal mode) 670 k SPS (impulse mode) 14-bit resolution with no missing codes INL: ±0.3 LSB typical, ±1 LSB maximum (±61 ppm of FSR) SNR: 85 d B @ 2 k Hz i CMOS® 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-patible Power dissipation 235 m W @ 1 MSPS 10 m W @ 1 k SPS 48-lead LQFP and 48-lead LFCSP (7 mm × 7 mm) AGND AVDD PDREF PDBUF IN+ IN- SWITCHED CAP DAC REF FUNCTIONAL BLOCK DIAGRAM TEMP REFBUFIN REF REFGND VCC VEE DVDD DGND OVDD OGND REF AMP SERIAL DATA PORT SERIAL CONFIGURATION 14 PORT D[13:0] SER/PAR BYTESWAP CNVST PD RESET CLOCK CONTROL LOGIC AND CALIBRATION CIRCUITRY PARALLEL INTERFACE OB/2C BUSY RD CS 06589-001 WARP IMPULSE BIPOLAR TEN Figure 1. Table 1. 48-Lead Pul SAR Selection Input Type Bipolar Differential Bipolar Unipolar Res (Bits) 14 14 16 AD7651 AD7660 AD7661 AD7650 AD7652 AD7664 AD7666 Bipolar Differential Unipolar Simultaneous/ Multichannel Unipolar Differential Unipolar Differential Bipolar 16 16 AD7610 AD7663 AD7675 AD7665 AD7676 AD7612 AD7671 AD7677 AD7621 AD7622 AD7623 16 AD7654 AD7655 AD7678 AD7631 AD7679 AD7674 AD7634 AD7641 AD7643 100 to 250 (k SPS) 500 to 570 (k SPS) 570 to 1000 (k SPS) AD7951 AD7952 AD7653 AD7667 >1000 k SPS APPLICATIONS Process controls Medical instruments High speed data acquisition Digital signal processing Instrumentation Spectrum analysis ATE GENERAL DESCRIPTION The AD7952 is a 14-bit, charge redistribution, successive approximation register (SAR) architecture analog-to-digital converter (ADC) fabricated on Analog Devices, Inc.’s i CMOS high...