AD5245 Series

256 Position I2C Compatible Digital Potentiometer

Catalog

256 Position I2C Compatible Digital Potentiometer

Part	Interface	Number of Taps	Package / Case	Supplier Device Package	Memory Type	Number of Circuits	Tolerance	Voltage - Supply [Min]	Voltage - Supply [Max]	Features	Mounting Type	Temperature Coefficient (Typ)	Operating Temperature [Max]	Operating Temperature [Min]	Taper	Configuration	Resistance - Wiper (Ohms) (Typ)	Resistance (Ohms)	Resistance (Ohms)
Analog Devices AD5245BRJZ10-RL7	I2C	256	SOT-23-8	SOT-23-8	Volatile	1	30 %	2.7 V	5.5 V	Selectable Address	Surface Mount	45 ppm/°C	125 °C	-40 °C	Linear	Potentiometer	50 Ohms	10k
Analog Devices AD5245BRJZ5-R2	I2C	256	SOT-23-8	SOT-23-8	Volatile	1	30 %	2.7 V	5.5 V	Selectable Address	Surface Mount	45 ppm/°C	125 °C	-40 °C	Linear	Potentiometer	50 Ohms		5 kOhms
Analog Devices AD5245BRJZ100-RL7	I2C	256	SOT-23-8	SOT-23-8	Volatile	1	30 %	2.7 V	5.5 V	Selectable Address	Surface Mount	45 ppm/°C	125 °C	-40 °C	Linear	Potentiometer	50 Ohms		100 kOhms
Analog Devices AD5245BRJZ5-RL7	I2C	256	SOT-23-8	SOT-23-8	Volatile	1	30 %	2.7 V	5.5 V	Selectable Address	Surface Mount	45 ppm/°C	125 °C	-40 °C	Linear	Potentiometer	50 Ohms		5 kOhms
Analog Devices AD5245BRJZ50-RL7	I2C	256	SOT-23-8	SOT-23-8	Volatile	1	30 %	2.7 V	5.5 V	Selectable Address	Surface Mount	45 ppm/°C	125 °C	-40 °C	Linear	Potentiometer	50 Ohms		50 kOhms
Analog Devices AD5245BRJZ10-R2	I2C	256	SOT-23-8	SOT-23-8	Volatile	1	30 %	2.7 V	5.5 V	Selectable Address	Surface Mount	45 ppm/°C	125 °C	-40 °C	Linear	Potentiometer	50 Ohms	10k
Analog Devices AD5245BRJZ100-R2	I2C	256	SOT-23-8	SOT-23-8	Volatile	1	30 %	2.7 V	5.5 V	Selectable Address	Surface Mount	45 ppm/°C	125 °C	-40 °C	Linear	Potentiometer	50 Ohms		100 kOhms
Analog Devices AD5245BRJ50-R2	I2C	256	SOT-23-8	SOT-23-8	Volatile	1		2.7 V	5.5 V		Surface Mount	45 ppm/°C	125 °C	-40 °C					50 kOhms

Catalog

256 Position I2C Compatible Digital Potentiometer

Key Features

• 256-position

• End-to-end resistance 5 kΩ, 10 kΩ, 50 kΩ, 100 kΩ

• Compact SOT-23-8 (2.9 mm × 3 mm) package

• Fast settling time: tS= 5 µs typ on power-up

• Full read/write of wiper register

• Power-on preset to midscale

• Extra package address decode pin AD0

• Computer software replaces microcontroller in factory programming applications

• Single supply: 2.7 V to 5.5 V

• Low temperature coefficient 45 ppm/°C

• Low power: IDD= 8 µA

• Wide operating temperature: –40°C to +125°C

• Evaluation board available

Description

The AD5245 provides a compact 2.9 mm × 3 mm packaged solution for 256-position adjustment applications. These devices perform the same electronic adjustment function as mechanical potentiometers or variable resistors, with enhanced resolution, solid-state reliability, and superior low temperature coefficient performance.The wiper settings are controllable through an I2C-compatible digital interface, which can also be used to read back the wiper register content. AD0 can be used to place up to two devices on the same bus. Command bits are available to reset the wiper position to midscale or to shut down the device into a state of zero power consumption.Operating from a 2.7 V to 5.5 V power supply and consuming less than 8 µA allows usage in portable battery-operated applications.Note that the terms digital potentiometer, VR, and RDAC are used interchangeably.APPLICATIONSMechanical potentiometer replacement in new designsLCD panel VCOMadjustmentLCD panel brightness and contrast controlTransducer adjustment of pressure, temperature, position, chemical, and optical sensorsRF amplifier biasingAutomotive electronics adjustmentGain control and offset adjustment