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AD5282BRU20 датащи(PDF) 1 Page - Analog Devices |
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AD5282BRU20 датащи(HTML) 1 Page - Analog Devices |
1 / 10 page PRELIMINARY TECHNICAL DATA a +15V, I2C Compatible Digital Potentiometers Preliminary Technical Data AD5280/AD5282 REV PrE 12 MAR 02 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: 781/329-4700 www.analog.com Fax: 781/326-8703 ©Analog Devices, Inc., 2002 FEATURES 256 Position AD5280 – 1-Channel AD5282 – 2-Channel (Independently Programmable) Potentiometer Replacement 20K, 50K, 200K Ohm with TC < 50ppm/ºC Internal Power ON Mid-Scale Preset +5 to +15V Single-Supply; ±5.5V Dual-Supply Operation I 2C Compatible Interface APPLICATIONS Multi-Media, Video & Audio Communications Mechanical Potentiometer Replacement Instrumentation: Gain, Offset Adjustment Programmable Voltage to Current Conversion Line Impedance Matching GENERAL DESCRIPTION The AD5280/AD5282 provides a single/dual channel, 256 position digitally-controlled variable resistor (VR) device. These devices perform the same electronic adjustment function as a potentiometer, trimmer or variable resistor. Each VR offers a completely programmable value of resistance, between the A terminal and the wiper, or the B terminal and the wiper. The fixed A-to-B terminal resistance of 20, 50 or 200K ohms has a 1% channel-to-channel matching tolerance with a nominal temperature coefficient of 30 ppm/°C. Wiper Position programming defaults to midscale at system power ON. Once powered the VR wiper position is programmed by a I 2C compatible 2-wire serial data interface. Both parts have two programmable logic outputs available to drive digital loads, gates, LED drivers, analog switches, etc. FUNCTIONAL BLOCK DIAGRAMS RDAC1 REGISTER ADDRESS DECODE SERIAL INPUT REGISTER PWR ON RESET SDA SCL V SS V DD GND A 1 W 1 B 1 AD5280 8 SHDN RDAC2 REGISTER O 1 RR V L AD0 AD1 O 2 RDAC1 REGISTER ADDRESS DECODE SERIAL INPUT REGISTER PWR ON RESET SDA SCL V SS V DD GND A 1 W 1 B 1 AD5282 8 SHDN RDAC2 REGISTER A 2 W 2 B 2 RR V L AD0 AD1 OUTPUT REGISTER O 1 R The AD5280/AD5282 are available in ultra compact surface mount thin TSSOP-14/-16 packages. All parts are guaranteed to operate over the extended industrial temperature range of -40°C to +85°C. For 3-wire, SPI compatible interface applications, see AD5203/AD5204/AD5206/AD7376/AD8400/AD8402/AD8403/ AD5260/AD5262/AD5200/AD5201 products. ORDERING GUIDE Kilo Package Package Model Ohms Temp Description Option AD5280BRU20 20 -40/+85°C TSSOP-14 RU-14 AD5280BRU50 50 -40/+85°C TSSOP-14 RU-14 AD5280BRU200 200 -40/+85°C TSSOP-14 RU-14 AD5282BRU20 20 -40/+85°C TSSOP-16 RU-16 AD5282BRU50 50 -40/+85°C TSSOP-16 RU-16 AD5282BRU200 200 -40/+85°C TSSOP-16 RU-16 The AD5280/AD5282 die size is 75 mil X 120 mil, 9,000 sq. mil. Contains xxx transistors. Patent Number xxx applies. |
Аналогичный номер детали - AD5282BRU20 |
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Аналогичное описание - AD5282BRU20 |
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