Datasheet AD5116 (Analog Devices)

Single-Channel, 64-Position, Push Button, ±8% Resistor Tolerance, Nonvolatile Digital Potentiometer Data Sheet AD5116 FEATURES FUNCTIONAL BLOCK DIAGRAM Nominal resistor tolerance error: ±8% maximum VDD Wiper current: ±6 mA DATA Rheostat mode temperature coefficient: 35 ppm/°C EEPROM CONTROL Low power consumption: 2.5 µA max @ 2.7 V and 125°C LOGIC RDAC BLOCK DATA REGISTER Wide bandwidth: 4 MHz (5 kΩ option) VDD ASE Power-on EEPROM refresh time < 50 μs A PU 50-year typical data retention at 125°C ADAPTIVE W DEBOUNCER 1 million write cycles PD B 2.3 V to 5.5 V supply operation AD5116
001
Built-in adaptive debouncer GND
09657-
Wide operating temperature: −40°C to +125°C
Figure 1.
Thin, 2 mm × 2 mm × 0.55 mm 8-lead LFCSP package APPLICATIONS Mechanical potentiometer replacement Table 1. NVM ±8% Resistance Tolerance Family Portable electronics level adjustment Model Resistance (kΩ) Position Interface Audio volume control
AD5110 10, 80 128 I2C
Low resolution DAC
AD5111 10, 80 128 Up/down
LCD panel brightness and contrast control
AD5112 5, 10, 80 64 I2C
Programmable voltage to current conversion
AD5113 5, 10, 80 64 Up/down
Programmable filters, delays, time constants
AD5116 5, 10, 80 64 Push button
Feedback resistor programmable power supply
AD5114 10, 80 32 I2C
Sensor calibration
AD5115 10, 80 32 Up/down
GENERAL DESCRIPTION
The AD5116 provides a nonvolatile digital potentiometer due to contact bounce (commonly found in mechanical solution for 64-position adjustment applications, offering switches). The debouncer is adaptive, accommodating a guaranteed low resistor tolerance errors of ±8% and up to variety of push buttons. ±6 mA current density in the A, B, and W pins. The low resistor The AD5116 can automatical y save the last wiper position into tolerance, low nominal temperature coefficient, and high EEPROM, making it suitable for applications that require a bandwidth simplify open-loop applications, as well as tolerance power-up in the last wiper position, for example, audio matching applications. equipment. The new low A-W and B-W resistance feature minimizes The AD5116 is available in a 2 mm × 2 mm 8-lead LFCSP the wiper resistance in the extremes of the resistor array to package. The part is guaranteed to operate over the extended typical y 45 Ω. industrial temperature range of −40°C to +125°C. A simple push button interface al ows manual control with just two external push button switches. The AD5116 is designed with a built-in adaptive debouncer that ignores invalid bounces
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Document Outline Features Applications Functional Block Diagram General Description Revision History Specifications Electrical Characteristics Interface Timing Specifications Timing Diagrams Absolute Maximum Ratings Thermal Resistance ESD Caution Pin Configuration and Function Descriptions Typical Performance Characteristics Test Circuits Theory of Operation RDAC Register Manual Increment Auto Scan Increment Low Wiper Resistance Feature EEPROM Automatic Save Enable Auto Save Manual Store End Scale Resistance Indicator RDAC Architecture Top Scale/Bottom Scale Architecture Programming the Variable Resistor Rheostat Operation—±8% Resistor Tolerance Programming the Potentiometer Divider Voltage Output Operation Terminal Voltage Operating Range Power-Up Sequence Layout and Power Supply Biasing Outline Dimensions Ordering Guide