Single-Channel, 128-/64-/32-Position, Up/Down, 8%
Resistor Tolerance, Nonvolatile Digital Potentiometer
Data Sheet
AD5111/AD5113/AD5115
FEATURES
FUNCTIONAL BLOCK DIAGRAM
V
DD
Nominal resistor tolerance error: 8ꢀ maximum
Wiper current: 6 mA
AD5111/
AD5113/
AD5115
POWER-ON
RESET
Rheostat mode temperature coefficient: 35 ppm/°C
Low power consumption: 2.5mA 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
A
W
B
CLK
DATA
DATA
EEPROM
EN
UP/DOWN
CONTROL
LOGIC
CS
RDAC
REGISTER
U/D
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
GND
Figure 1.
APPLICATIONS
Mechanical potentiometer replacement
Portable electronics level adjustment
Audio volume control
Table 1. 8% Resistance Tolerance Family
Model
Resistance (kΩ)
Position
128
128
64
Interface
I2C
Up/down
I2C
Up/down
Push-button
I2C
AD5110
AD5111
AD5112
AD5113
AD5116
AD5114
AD5115
10, 80
10, 80
5, 10, 80
5, 10, 80
5, 10, 80
10, 80
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
64
64
32
10, 80
32
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. A
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