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AD573 Datasheet(PDF) 1 Page - Analog Devices |
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AD573 Datasheet(HTML) 1 Page - Analog Devices |
1 / 11 page FUNCTIONAL BLOCK DIAGRAM BURIED ZENER REF COMP- ARATOR ANALOG IN DB9 HIGH BYTE 10-BIT CURRENT OUTPUT DAC V+ V– DIGITAL COMMON CONVERT INT CLOCK 10-BIT SAR DB8 DB7 DB6 DB5 DB4 DB3 DB2 DB1 DB0 HBE LBE MSB LSB LOW BYTE ANALOG COMMON BIPOLAR OFFSET CONTROL DATA READY AD573 5k 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. a 10-Bit A/D Converter AD573 One Technology Way, P.O. Box 9106, Norwood, MA 02062-9106, U.S.A. FEATURES Complete 10-Bit A/D Converter with Reference, Clock and Comparator Full 8- or 16-Bit Microprocessor Bus Interface Fast Successive Approximation Conversion—20 s typ No Missing Codes Over Temperature Operates on +5 V and –12 V to –15 V Supplies Low Cost Monolithic Construction PRODUCT DESCRIPTION The AD573 is a complete 10-bit successive approximation analog-to-digital converter consisting of a DAC, voltage refer- ence, clock, comparator, successive approximation register (SAR) and three state output buffers—all fabricated on a single chip. No external components are required to perform a full accuracy 10-bit conversion in 20 µs. The AD573 incorporates advanced integrated circuit design and processing technologies. The successive approximation function is implemented with I 2L (integrated injection logic). Laser trim- ming of the high stability SiCr thin-film resistor ladder network insures high accuracy, which is maintained with a temperature compensated subsurface Zener reference. Operating on supplies of +5 V and –12 V to –15 V, the AD573 will accept analog inputs of 0 V to +10 V or –5 V to +5 V. The trailing edge of a positive pulse on the CONVERT line initiates the 20 µs conversion cycle. DATA READY indicates completion of the conversion. HIGH BYTE ENABLE (HBE) and LOW BYTE ENABLE (LBE) control the 8-bit and 2-bit three state output buffers. The AD573 is available in two versions for the 0 °C to +70°C temperature range, the AD573J and AD573K. The AD573S guarantees ±1 LSB relative accuracy and no missing codes from –55 °C to +125°C. Three package configurations are offered. All versions are offered in a 20-pin hermetically sealed ceramic DIP. The AD573J and AD573K are also available in a 20-pin plastic DIP or 20-pin leaded chip carrier. PRODUCT HIGHLIGHTS l. The AD573 is a complete 10-bit A/D converter. No external components are required to perform a conversion. 2. The AD573 interfaces to many popular microprocessors without external buffers or peripheral interface adapters. The 10 bits of output data can be read as a 10-bit word or as 8- and 2-bit words. 3. The device offers true 10-bit accuracy and exhibits no miss- ing codes over its entire operating temperature range. 4. The AD573 adapts to either unipolar (0 V to +10 V) or bipolar (–5 V to +5 V) analog inputs by simply grounding or opening a single pin. 5. Performance is guaranteed with +5 V and –12 V or –15 V supplies. 6. The AD573 is available in a version compliant with MIL-STD- 883. Refer to the Analog Devices Military Products Data- book or current /883B data sheet for detailed specifications. REV. B Tel: 781.329.4700 Fax: 781.461.3113 |
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