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AD5263 データシート(PDF) 1 Page - Analog Devices |
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AD5263 データシート(HTML) 1 Page - Analog Devices |
1 / 6 page PRELIMINARY TECHNICAL DATA a Quad +15V 256-Step DigiPOTs with Pin Selectable SPI / I2C Digital Interface Preliminary Technical Data AD5263 08 AUG ’02, REV PrD 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 World Wide Web Site: http://www.analog.com Fax: 781/326-8703 © Analog Devices, Inc., 2002 FEATURES 256 Position 4-Channel (Independently Programmable) 20k, 50k, 200k Ohms Low Temperature Coefficient 50ppm/ oC Selectable Digital Interface (3-Wire SPI Compatible or 2-Wire I 2C Compatible Serial Data Input) Operating temperature range -40 to 125ºC +5 to +15V Single-Supply; ±5V Dual-Supply Operation APPLICATIONS Mechanical Potentiometer Replacement Optical Network Laser LED Adjust Instrumentation: Gain, Offset Adjustment Stereo Channel Audio Level Control Automotive Electronics Adjustment Programmable Voltage to Current Conversion Programmable Filters, Delays, Time Constants Line Impedance Matching Low Resolution DAC Replacement GENERAL DESCRIPTION The AD5263 is the industry first quad channel, 256 position, digital potentiometer 1 selectable digital interface. These devices perform the same electronic adjustment function as mechanical potentiometers or variable resistor with enhanced resolution, solid- state reliability, and superior low temperature coefficient performance. Each Channel of the AD5263 contains a fixed resistor with a wiper contact that taps the fixed resistor value at a point determined by a digital code loaded into the 3 wire SPI or 2-wire I 2C compatible serial-input register. The resistance between the wiper and either end point of the fixed resistor varies linearly with respect to the digital code transferred into the RDAC latch 1. The variable resistor 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 20k, 50k or 200k Ω has a nominal temperature coefficient of 50 ppm/°C. Unlike majority of the digital potentiometers in the market, these devices can operate up to 15V or ±5V provided proper supply voltages are furnished. The AD5263 are available in thin narrow body TSSOP-24. All parts are guaranteed to operate over the extended automotive temperature range of -40°C to +125°C. Functional Block Diagram A1 W1 B1 A2 W2 B2 A3 W3 B3 A4 W4 B4 RDAC 1 REGISTER RDAC 2 REGISTER RDAC 3 REGISTER RDAC 4 REGISTER SERIAL INPUT REGISTER 8 CLK /SCL SDI / SDA CS / AD0 V L GND DIS SDO / O1 NC / O2 V DD SHDN RESB / AD1 V SS SPI / I2C SELECT LOGIC ADDRESS DECODER AD5263 Figure 1 Normalized Gain Flatness Versus Frequency. |
同様の部品番号 - AD5263 |
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同様の説明 - AD5263 |
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