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Analog Devices Semiconductor Electronic Components Datasheet

AD5116 Datasheet

Single-Channel Nonvolatile Digital Potentiometer

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Data Sheet
Single-Channel, 64-Position, Push Button,
±8% Resistor Tolerance, Nonvolatile Digital Potentiometer
AD5116
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
VDD
DATA
CONTROL
EEPROM
LOGIC
BLOCK
DATA
RDAC
REGISTER
VDD
ASE
PU
ADAPTIVE
PD DEBOUNCER
A
W
B
AD5116
GND
Figure 1.
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
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.
Rev. B
Document Feedback
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responsibilityisassumedbyAnalogDevices for itsuse,nor foranyinfringementsofpatentsor 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.
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One Technology Way, P.O. Box 9106, Norwood, MA 02062-9106, U.S.A.
Tel: 781.329.4700 ©2011–2012 Analog Devices, Inc. All rights reserved.
Technical Support
www.analog.com


Analog Devices Semiconductor Electronic Components Datasheet

AD5116 Datasheet

Single-Channel Nonvolatile Digital Potentiometer

No Preview Available !

AD5116
TABLE OF CONTENTS
Features .............................................................................................. 1
Applications....................................................................................... 1
Functional Block Diagram .............................................................. 1
General Description ......................................................................... 1
Revision History ............................................................................... 2
Specifications..................................................................................... 3
Electrical Characteristics ............................................................. 3
Interface Timing Specifications.................................................. 5
Timing Diagrams.......................................................................... 5
Absolute Maximum Ratings............................................................ 6
Thermal Resistance ...................................................................... 6
ESD Caution.................................................................................. 6
Pin Configuration and Function Descriptions............................. 7
Typical Performance Characteristics ............................................. 8
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.................................... 4
4/12—Rev. 0 to Rev. A
Changes to Features Section............................................................ 1
Changes to Positive Supply Current, Table 2 ................................ 4
Changes to Ordering Guide .......................................................... 16
10/11—Revision 0: Initial Version
Data Sheet
Test Circuits..................................................................................... 12
Theory of Operation ...................................................................... 13
RDAC Register............................................................................ 13
EEPROM ..................................................................................... 13
Automatic Save Enable .............................................................. 13
End Scale Resistance Indicator................................................. 14
RDAC Architecture.................................................................... 14
Programming the Variable Resistor......................................... 14
Programming the Potentiometer Divider............................... 15
Terminal Voltage Operating Range ......................................... 15
Power-Up Sequence ................................................................... 15
Layout and Power Supply Biasing ............................................ 15
Outline Dimensions ....................................................................... 16
Ordering Guide .......................................................................... 16
Rev. B | Page 2 of 16


Part Number AD5116
Description Single-Channel Nonvolatile Digital Potentiometer
Maker Analog Devices
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AD5116 Datasheet PDF






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