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AD7545 Datasheet(PDF) 1 Page - Analog Devices |
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AD7545 Datasheet(HTML) 1 Page - Analog Devices |
1 / 8 page 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. a AD7545 One Technology Way, P.O. Box 9106, Norwood, MA 02062-9106, U.S.A. Tel: 617/329-4700 World Wide Web Site: http://www.analog.com Fax: 617/326-8703 © Analog Devices, Inc., 1997 CMOS 12-Bit Buffered Multiplying DAC FUNCTIONAL BLOCK DIAGRAM 19 16 17 20 1 2 3 18 AD7545 R RFB OUT 1 AGND VDD DGND DB11–DB0 (PINS 4–15) 12 12 12-BIT MULTIPLYING DAC INPUT DATA LATCHES VREF WR CS FEATURES 12-Bit Resolution Low Gain TC: 2 ppm/ C typ Fast TTL Compatible Data Latches Single +5 V to +15 V Supply Small 20-Lead 0.3" DIP and 20-Terminal Surface Mount Packages Latch Free (Schottky Protection Diode Not Required) Low Cost Ideal for Battery Operated Equipment PIN CONFIGURATIONS DIP LCCC PLCC GENERAL DESCRIPTION The AD7545 is a monolithic 12-bit CMOS multiplying DAC with onboard data latches. It is loaded by a single 12-bit wide word and directly interfaces to most 12- and 16-bit bus systems. Data is loaded into the input latches under the control of the CS and WR inputs; tying these control inputs low makes the input latches transparent, allowing direct unbuffered operation of the DAC. The AD7545 is particularly suitable for single supply operation and applications with wide temperature variations. The AD7545 can be used with any supply voltage from +5 V to +15 V. With CMOS logic levels at the inputs the device dissi- pates less than 0.5 mW for VDD = +5 V. 20 19 18 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 TOP VIEW (Not to Scale) PIN 1 IDENTIFIER DB11 (MSB) DB10 DB9 DB8 DB7 VDD WR CS DB0 (LSB) DB1 AD7545 14 13 12 11 17 16 15 20 19 18 10 9 8 1 2 3 4 7 6 5 TOP VIEW (Not to Scale) AD7545 OUT 1 WR VDD VREF RFB AGND DGND DB11 (MSB) DB1 DB0 (MSB) CS DB10 DB9 DB8 DB7 DB6 DB5 DB4 DB3 DB2 20 19 1 2 3 18 14 15 16 17 4 5 6 7 8 9 1011 1213 TOP VIEW (Not to Scale) AD7545 DB11 (MSB) DB10 DB9 DB8 DB7 VDD WR CS DB0 (LSB) DB1 |
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