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AD7952BSTZ

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仕様・特性

14-Bit, 1 MSPS, Differential, Programmable Input PulSAR® ADC AD7952 Data Sheet FEATURES FUNCTIONAL BLOCK DIAGRAM TEMP REFBUFIN REF REFGND VCC VEE DVDD AGND AVDD SERIAL CONFIGURATION 14 PORT PDBUF SWITCHED CAP DAC IN– OGND SERIAL DATA PORT REF IN+ OVDD AD7952 REF AMP PDREF DGND D[13:0] SER/PAR BYTESWAP PARALLEL INTERFACE CLOCK CNVST OB/2C BUSY PD CONTROL LOGIC AND CALIBRATION CIRCUITRY RESET RD CS 06589-001 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®-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 typical, ±1 LSB maximum (±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 235 mW @ 1 MSPS 10 mW @ 1 kSPS 48-lead LQFP and 48-lead LFCSP (7 mm × 7 mm) WARP IMPULSE BIPOLAR TEN Figure 1. Table 1. 48-Lead PulSAR Selection 100 to 250 (kSPS) 500 to 570 (kSPS) 570 to 1000 (kSPS) Input Type Res (Bits) Bipolar 14 AD7951 Differential Bipolar 14 AD7952 Process controls Medical instruments High speed data acquisition Digital signal processing Instrumentation Spectrum analysis ATE Unipolar 16 Bipolar 16 AD7610 AD7663 AD7665 AD7612 AD7671 GENERAL DESCRIPTION Differential Unipolar 16 AD7675 AD7676 AD7677 >1000 kSPS APPLICATIONS AD7653 AD7660 AD7650 AD7661 AD7667 AD7652 AD7664 AD7666 The AD7952 is a 14-bit, charge redistribution, successive approximation register (SAR) architecture analog-to-digital converter (ADC) fabricated on Analog Devices, Inc.’s iCMOS high voltage process. The device is configured through hardware or via a dedicated write-only serial configuration port for input range and operating mode. The AD7952 contains a high speed 14-bit sampling ADC, an internal conversion clock, an internal reference (and buffer), error correction circuits, and both serial and parallel system interface ports. A falling edge on CNVST samples the fully differential analog inputs on IN+ and IN−. The AD7952 features four different analog input ranges and three different sampling modes: warp mode for the fastest throughput, normal mode for the fastest asynchronous throughput, and impulse mode where power is scaled with throughput. Operation is specified from −40°C to +85°C. Rev. A AD7651 AD7621 AD7622 AD7623 Simultaneous/ Multichannel Unipolar 16 AD7654 AD7655 Differential Unipolar 18 AD7678 Differential Bipolar 18 AD7631 AD7679 AD7674 AD7641 AD7643 AD7634 Document Feedback Information furnished by Analog Devices is believed to be accurate and reliable. However, no responsibility is assumed by Analog Devices for its use, nor for any infringements of patents or other rights of third parties that may result from its use. Specifications subject to change without notice. No license is granted by implication or otherwise under any patent or patent rights of Analog Devices. Trademarks and registered trademarks are the property of their respective owners. One Technology Way, P.O. Box 9106, Norwood, MA 02062-9106, U.S.A. Tel: 781.329.4700 ©2007–2012 Analog Devices, Inc. All rights reserved. Technical Support www.analog.com

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