Document
Data Sheet
Single-Channel, 128-/64-/32-Position, Up/Down, ±8%
Resistor Tolerance, Nonvolatile Digital Potentiometer
AD5111/AD5113/AD5115
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 supply operation Chip select enable multiple device 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
VDD
POWER-ON RESET
AD5111/ AD5113/ AD5115
CLK CS U/D
EN
UP/DOWN CONTROL
LOGIC
DATA EEPROM
DATA
RDAC
REGISTER
A W B
GND
Figure 1.
09654-001
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 AD5111/AD5113/AD5115 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.
A simple 3-wire up/down interface allows manual switching or high speed digital control with clock rates up to 50 MHz.
The AD5111/AD5113/AD5115 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
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AD5111/AD5113/AD5115
TABLE OF CONTENTS
Features .............................................................................................. 1 Applications....................................................................................... 1 Functional Block Diagram .............................................................. 1 General Description ......................................................................... 1 Revision History ............................................................................... 2 Specifications..................................................................................... 3
Electrical Characteristics—AD5111 .......................................... 3 Electrical Characteristics—AD5113 .......................................... 5 Electrical Characteristics—AD5115 .......................................... 7 Interface Timing Specifications.................................................. 9 Timing Diagram ........................................................................... 9 Absolute Maximum Ratings.......................................................... 10 Thermal Resistance .................................................................... 10 ESD Caution................................................................................ 10 Pin Configuration and Function Descriptions........................... 11 Typical Performance Characteristics ........................................... 12
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.................................... 3 Changed IDD Unit from mA to µA, Table 3.................................... 5 Changed IDD Unit from mA to µA, Table 4.................................... 7 4/12—Rev. 0 to Rev. A Changes to Features Section............................................................ 1 Changes to Positive Supply Current, Table 2 ................................ 3 Changes to Positive Supply Current, Table 3 .................