Part # AD5247 datasheet

Part Manufacturer: Analog Devices

Analog Devices

Part Description: AD5247 128-Position I2C -Compatible Digital Potentiometer Data Sheet (Rev. B)

Part Details:

128-Position I2C®-Compatible Digital Potentiometer AD5247 FEATURES FUNCTIONAL BLOCK DIAGRAM V 128 positions DD End-to-end resistance: 5 k, 10 k, 50 k, 100 k A Ultracompact, SC70-6 (2 mm × 2.1 mm) package SDA I2C INTERFACE I2C-compatible interface SCL Full read/write of wiper register W Power-on preset to midscale Single-supply 2.7 V to 5.5 V WIPER REGISTER Low temperature coefficient: 45 ppm/°C B Low power, IDD = 3 A typical 001 Wide operating temperature range: ­40°C to +125°C 6- GND 8703 Available in Pb­free package Figure 1. Evaluation board available APPLICATIONS Mechanical potentiometer replacement in new designs Transducer adjustment of pressure, temperature, position, chemical, and optical sensors RF amplifier-biasing LCD brightness and contrast adjustment Automotive electronics adjustment Gain control and offset adjustment have three hard-coded slave address options available to allow GENERAL DESCRIPTION users access to three of these devices on one I2C bus (see Table 8 The AD5247 provides a compact, 2 mm × 2.1 mm, packaged for a full list of slave address locations). solution for 128-position adjustment applications. This device The resistance between the wiper and either end point of performs the same electronic adjustment function as a mechanical the fixed resistor varies linearly with respect to the digital potentiometer or a variable resistor. Available in four different code transferred into the RDAC latch. Note the terms digital end-to-end resistance values (5 k, 10 k, 50 k, and 100 k), potentiometer, VR (variable resistor), and RDAC are used these low temperature coefficient devices are ideal for high interchangeably in this document. accuracy and stability variable resistance adjustments. Operating from a 2.7 V to 5.5 V power supply and consuming

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AD5247.pdf Datasheet