Single-Channel, 64-Position, Push Button,
±8% Resistor Tolerance, Nonvolatile Digital Potentiometer
Data Sheet
Rev. B Document Feedback
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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
Built-in adaptive debouncer
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
ADAPTIVE
DEBOUNCER
CONTROL
LOGIC
BLOCK
EEPROM
RDAC
REGISTER
AD5116
A
W
B
DATA
DATA
GND
V
DD
V
DD
09657-001
ASE
PU
PD
Figure 1.
Table 1. NVM ±8% Resistance Tolerance Family
AD5110 10, 80 128 I
2
C
AD5111 10, 80 128 Up/down
AD5112 5, 10, 80 64 I
C
AD5113 5, 10, 80 64 Up/down
AD5116 5, 10, 80 64 Push button
AD5114 10, 80 32 I
2
C
AD5115 10, 80 32 Up/down
GENERAL DESCRIPTION
The AD5116 provides a nonvolatile digital potentiometer
solution for 64-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 A-W and B-W resistance feature minimizes
the wiper resistance in the extremes of the resistor array to
typically 45 Ω.
A simple push button interface allows manual control with
just two external push button switches. The AD5116 is designed
with a built-in adaptive debouncer that ignores invalid bounces
due to contact bounce (commonly found in mechanical
switches). The debouncer is adaptive, accommodating a
variety of push buttons.
The AD5116 can automatically save the last wiper position into
EEPROM, making it suitable for applications that require a
power-up in the last wiper position, for example, audio
equipment.
The AD5116 is available in a 2 mm × 2 mm 8-lead LFCSP
package. The part is guaranteed to operate over the extended
industrial temperature range of −40°C to +125°C.
