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AD5111 Datasheet

(AD5111 - AD5115) Nonvolatile Digital Potentiometer

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Single-Channel, 128-/64-/32-Position, Up/Down, ±8%
Resistor Tolerance, Nonvolatile Digital Potentiometer
AD5111/AD5113/AD5115
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
Rheostat mode temperature coefficient: 35 ppm/°C
Potentiometer mode temperature coefficient: 5 ppm/°C
2.3 V to 5.5 V single-supply operation
Power-on EEPROM refresh time < 50 μs
Simple up/down manual or digital configurable control
Chip select enable multiple device operation
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
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.
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.
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
Rev. 0
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 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
www.analog.com
Fax: 781.461.3113
©2011 Analog Devices, Inc. All rights reserved.
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