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AD571SD Datasheet(PDF) 1 Page - Analog Devices |
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AD571SD Datasheet(HTML) 1 Page - Analog Devices |
1 / 8 page FUNCTIONAL BLOCK DIAGRAM 3 STATE BUFFERS AUTO BLANK CONTROL 10-BIT CURRENT OUTPUT DAC 5k DATA READY INT. CLOCK 10-BIT SAR B & C COMPARATOR TEMPERATURE COMPENSATED BURIED ZENER REFERENCE AND DAC CONTROL 13 14 15 MSB LSB 17 16 10 11 12 BLANK & CONVERT CONTROL V+ V– DIGITAL COMMON ANALOG IN ANALOG COMMON BIPOLAR OFFSET CONTROL BIT OUTPUTS AD571 DATA READY 6 7 8 9 2 3 4 5 18 1 a 10-Bit A/D Converter AD571* FEATURES Complete A/D Converter with Reference and Clock Fast Successive Approximation Conversion: 40 s max No Missing Codes Over Temperature 0 C to +70 C: AD571K –55 C to +125 C: AD571S Digital Multiplexing: Three-State Outputs 18-Pin Ceramic DIP Low Cost Monolithic Construction PRODUCT DESCRIPTION The AD571 is an 10-bit successive approximation A/D con- verter consisting of a DAC, voltage reference, clock, compara- tor, successive approximation register and output buffers—all fabricated on a single chip. No external components are re- quired to perform a full accuracy 10-bit conversion in 40 µs. Operating on supplies of +5 V to +15 V and –15 V, the AD571 will accepts analog inputs of 0 V to +10 V unipolar of ±5 V bipolar, externally selectable. When the BLANK and CONVERT input is driven low, the three-state outputs will be open and a conversion will commence. Upon completion of the conversion, the DATA READY line goes low and the data ap- pears at the output. Pulling the BLANK and CONVERT input high blanks the outputs and readies the device for the next con- version. The AD571 executes a true 10-bit conversion with no missing codes in 40 µs maximum. The AD571 is available in two version for the 0 °C to +70°C temperature range, the AD571J and K. The AD571S guarantees 10-bit accuracy and no missing codes from –55 °C to +125°C. *Covered by Patent Nos. 3,940,760; 4,213,806; 4,136,349. REV. A 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 which may result from its use. No license is granted by implication or otherwise under any patent or patent rights of Analog Devices. One Technology Way, P.O. Box 9106, Norwood, MA 02062-9106, U.S.A. Tel: 617/329-4700 Fax: 617/326-8703 PRODUCT HIGHLIGHTS 1. The AD571 is a complete 10-bit A/D converter. No external components are required to perform a conversion. Full-scale calibration accuracy of ±0.3% is achieved without external trims. 2. The AD571 is a single chip device employing the most ad- vanced IC processing techniques. Thus, the user has at his disposal a truly precision component with the reliability and low cost inherent in monolithic construction, 3. The AD571 accepts either unipolar (0 V to +10 V) or bipolar (–5 V to +5 V) analog inputs by grounding or opening a single pin. 4. The device offers true 10-bit accuracy and exhibits no miss- ing codes over its entire operating temperature range. 5. Operation is guaranteed with –15 V and +5 V or +15 V sup- plies. The device will also operate with a –12 V supply. |
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