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AD5112

Analog Devices
Part Number AD5112
Manufacturer Analog Devices
Description Single-Channel Nonvolatile Digital Potentiometer
Published Apr 12, 2012
Detailed Description Data Sheet Single-Channel, 128-/64-/32-Position, I2C, ±8% Resistor Tolerance, Nonvolatile Digital Potentiometer AD5110/...
Datasheet PDF File AD5112 PDF File

AD5112
AD5112

Overview
Data Sheet Single-Channel, 128-/64-/32-Position, I2C, ±8% Resistor Tolerance, Nonvolatile Digital Potentiometer AD5110/AD5112/AD5114 09582-001 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 analog supply operation 1.
8 V to 5.
5 V logic supply operation 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 VLOGIC VDD POWER-ON RESET AD5110/AD5112/AD5114 A SDA SCL DATA I2C SERIAL INTERFACE DATA EEPROM RDAC REGISTER W B GND Figure 1.
Table 1.
±8% Resistance Tolerance Family Model Resistance (kΩ) Position AD5110 10, 80 128 AD5111 10, 80 128 AD5112 5, 10, 80 64 AD5113 5, 10, 80 64 AD5116 5, 10, 80 64 AD5114 10, 80 32 AD5115 10, 80 32 Interface I2C Up/down I2C Up/down Push-button I2C Up/down GENERAL DESCRIPTION The AD5110/AD5112/AD5114 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.
The wiper settings are controllable through an I2C-compatible digital interf...


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