AD5245

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
I²C® compatible interface
Extra package address decode pin AD0
Full read/write of wiper register
Power-on preset to midscale
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




Application

Mechanical potentiometer replacement in new designs
Transducer adjustment of pressure, temperature, position,chemical, and optical sensors
RF amplifier biasing
Automotive electronics adjustment
Gain control and offset adjustment




Pinout








Specifications



VDD to GND 0.3 V to +7 V
VA, VB, VW to GND VDD
IMAX¹ ±20 mA
Digital Inputs and Output Voltage to GND 0 V to +7 V
Operating Temperature Range40°C to +125°C
Maximum Junction Temperature (TJMAX)150°C
Storage Temperature65°C to +150°C
Lead Temperature (Soldering, 10 sec) 300°C
Thermal Resistance²_JA: MSOP-10 230°C/W




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 AD5245 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 5 µA allows for usage in portable battery-operated applications.