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AD5112 Dataheets PDF



Part Number AD5112
Manufacturers Analog Devices
Logo Analog Devices
Description Single-Channel Nonvolatile Digital Potentiometer
Datasheet AD5112 DatasheetAD5112 Datasheet (PDF)

Data Sheet Single-Channel, 128-/64-/32-Position, I2C, ±8% Resistor Tolerance, Nonvolatile Digital Potentiometer AD5110/AD5112/AD5114 09582-001 FEATURES Nominal resistor tolerance error: ±8% maximum Wiper current: ±6 mA Rheostat mode temperature coefficient: 35 ppm/°C Low power consumption: 2.5 µA max @ 2.7 V and 125°C Wide bandwidth: 4 MHz (5 kΩ option) Power-on EEPROM refresh time < 50 μs 50-year typical data retention at 125°C 1 million write cycles 2.3 V to 5.5 V analog supply operation 1..

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Data Sheet Single-Channel, 128-/64-/32-Position, I2C, ±8% Resistor Tolerance, Nonvolatile Digital Potentiometer AD5110/AD5112/AD5114 09582-001 FEATURES Nominal resistor tolerance error: ±8% maximum Wiper current: ±6 mA Rheostat mode temperature coefficient: 35 ppm/°C Low power consumption: 2.5 µA max @ 2.7 V and 125°C Wide bandwidth: 4 MHz (5 kΩ option) Power-on EEPROM refresh time < 50 μs 50-year typical data retention at 125°C 1 million write cycles 2.3 V to 5.5 V analog supply operation 1.8 V to 5.5 V logic supply operation 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 VLOGIC VDD POWER-ON RESET AD5110/AD5112/AD5114 A SDA SCL DATA I2C SERIAL INTERFACE DATA EEPROM RDAC REGISTER W B GND Figure 1. Table 1. ±8% Resistance Tolerance Family Model Resistance (kΩ) Position AD5110 10, 80 128 AD5111 10, 80 128 AD5112 5, 10, 80 64 AD5113 5, 10, 80 64 AD5116 5, 10, 80 64 AD5114 10, 80 32 AD5115 10, 80 32 Interface I2C Up/down I2C Up/down Push-button I2C Up/down 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. Rev. B Document Feedback Information furnished by Analog Devices is believed to be accurate and reliable. However, no responsibilityisassumedbyAnalogDevices for itsuse,nor foranyinfringementsofpatentsor other rights of third parties that may result from its use. Specifications subject to change without notice. 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 ©2011–2012 Analog Devices, Inc. All rights reserved. Technical Support www.analog.com AD5110/AD5112/AD5114 TABLE OF CONTENTS Features .............................................................................................. 1 Applications....................................................................................... 1 Functional Block Diagram .............................................................. 1 General Description ......................................................................... 1 Revision History ............................................................................... 2 Specifications..................................................................................... 3 Electrical Characteristics—AD5110 .......................................... 3 Electrical Characteristics—AD5112 .......................................... 5 Electrical Characteristics—AD5114 .......................................... 7 Interface Timing Specifications.................................................. 9 Shift Register and Timing Diagram ......................................... 10 Absolute Maximum Ratings.......................................................... 11 Thermal Resistance .................................................................... 11 ESD Caution................................................................................ 11 Pin Configuration and Function Descriptions........................... 12 Typical Performance Characteristics ........................................... 13 Test Circuits..................................................................................... 18 REVISION HISTORY 11/12—Rev. A to Rev. B Changed Low Power Consumption from 2.5 mA to 2.5 µA....... 1 Changed IDD Unit from mA to µA, Table 2.................................... 4 Changed IDD Unit from mA to µA, Table 3.................................... 6 Changed IDD Unit from mA to µA, Table 4.................................... 8 Changes to Figure 45...........................


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