AD5116 Datasheet, PDF (1/16 Pages) Analog Devices – Single-Channel, 64-Position, Push Button, ±8% Resistor Tolerance, Nonvolatile Digital Potentiometer

Data Sheet
Single-Channel, 64-Position, Push Button,
±8% Resistor Tolerance, Nonvolatile Digital Potentiometer
AD5116
FEATURES
Single-channel, 64-position resolution
5 kΩ, 10 kΩ, 80 kΩ nominal resistance
Maximum ±8% nominal resistor tolerance error
Low minimum A-W and B-W resistance feature
End scale resistance indicator
2.3 V to 5.5 V single-supply operation
±6 mA maximum continuous A, B, and W current density
Simple push button manual configurable control
Built-in adaptive debouncer
Discrete step-up/step-down control
Auto scan up/down control
Auto or manual save of wiper position
Power-on EEPROM refresh time < 50 μs
Rheostat mode temperature coefficient: 35 ppm/°C
Potentiometer mode temperature coefficient: 5 ppm/°C
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
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.
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
V_DD
DATA
CONTROL
EEPROM
LOGIC
BLOCK
DATA
RDAC
REGISTER
V_DD
ASE
PU
A
ADAPTIVE
PD
DEBOUNCER
W
B
AD5116
GND
Figure 1.
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.
Table 1. NVM ±8% Resistance Tolerance Family
Model Resistance (kΩ) Position Interface
AD5110 10, 80
128
I²C
AD5111 10, 80
128
Up/down
AD5112 5, 10, 80
64
I²C
AD5113 5, 10, 80
64
Up/down
AD5116 5, 10, 80
64
Push button
AD5114 10, 80
32
I²C
AD5115 10, 80
32
Up/down
Rev. 0
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