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AD5112BCPZ5-RL7 bảng dữ liệu(PDF) 1 Page - Analog Devices |
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AD5112BCPZ5-RL7 bảng dữ liệu(HTML) 1 Page - Analog Devices |
1 / 28 page Single-Channel, 128-/64-/32-Position, I2C, ±8% Resistor Tolerance, Nonvolatile Digital Potentiometer Data Sheet AD5110/AD5112/AD5114 Rev. 0 Information furnished by Analog Devices is believed to be accurate and reliable. However, no responsibilityis assumedbyAnalogDevicesforitsuse,norforanyinfringementsof patentsorother rightsofthirdpartiesthatmayresultfromitsuse.Specificationssubjecttochangewithoutnotice.No license is granted by implication or otherwise under any patent or patent rights of Analog Devices. Trademarksandregisteredtrademarksarethepropertyoftheirrespectiveowners. One Technology Way, P.O. Box 9106, Norwood, MA 02062-9106, U.S.A. Tel: 781.329.4700 www.analog.com Fax: 781.461.3113 ©2011 Analog Devices, Inc. All rights reserved. FEATURES Single-channel, 128-/64-/32-position resolution 5 kΩ, 10 kΩ, 80 kΩ nominal resistance Maximum ±8% nominal resistor tolerance error Low wiper resistance ±6 mA maximum wiper current density Resistor tolerance stored in EEPROM (0.1% accuracy) Rheostat mode temperature coefficient: 35 ppm/°C Potentiometer mode temperature coefficient: 5 ppm/°C 2.3 V to 5.5 V single-supply operation 1.8 V to 5.5 V logic supply operation Power-on EEPROM refresh time < 50 μs I2C-compatible interface Wiper setting and EEPROM readback 50-year typical data retention at 125°C 1 million write cycles Wide operating temperature: −40°C to +125°C Thin, 2 mm × 2 mm × 0.55 mm 8-lead LFCSP package APPLICATIONS Mechanical potentiometer replacement Portable electronics level adjustment Audio volume control Low resolution DAC LCD panel brightness and contrast control Programmable voltage to current conversion Programmable filters, delays, time constants Feedback resistor programmable power supply Sensor calibration FUNCTIONAL BLOCK DIAGRAM POWER-ON RESET VLOGIC VDD DATA DATA SDA A W B SCL EEPROM AD5110/AD5112/AD5114 RDAC REGISTER GND I2C SERIAL INTERFACE Figure 1. GENERAL DESCRIPTION The AD5110/AD5112/AD5114 provide a nonvolatile solution for 128-/64-/32-position adjustment applications, offering guaranteed low resistor tolerance errors of ±8% and up to ±6 mA current density in the A, B, and W pins. The low resistor tolerance, low nominal temperature coefficient and high bandwidth simplify open-loop applications, as well as tolerance matching applications. The new low wiper resistance feature minimizes the wiper resistance in the extremes of the resistor array to only 45 Ω, typical. The wiper settings are controllable through an I2C-compatible digital interface that is also used to readback the wiper register and EEPROM content. Resistor tolerance is stored within EEPROM, providing an end-to-end tolerance accuracy of 0.1%. The AD5110/AD5112/AD5114 are available in a 2 mm × 2 mm LFCSP package. The parts are guaranteed to operate over the extended industrial temperature range of −40°C to +125°C. Table 1. ±8% Resistance Tolerance Family Model Resistance (kΩ) Position Interface AD5110 10, 80 128 I2C AD5111 10, 80 128 Up/down AD5112 5, 10, 80 64 I2C AD5113 5, 10, 80 64 Up/down AD5116 5, 10, 80 64 Push-button AD5114 10, 80 32 I2C AD5115 10, 80 32 Up/down |
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