AD5247BKSZ100-RL7

AD5247 is a 128 position I²C-compatible digital potentiometer. This device performs the same electronic adjustment function as a mechanical potentiometer or a variable resistor. The wiper settings are controllable through the I²C-compatible digital interface, which can also be used to read back the present wiper register control word. The resistance between the wiper and either end point of the fixed resistor varies linearly with respect to the digital code transferred into the RDAC latch. Note the terms digital potentiometer, VR (variable resistor), and RDAC are used interchangeably in this document. Application includes 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.

• 5Kohm, 10Kohm, 50Kohm, 100Kohm end-to-end resistance
• I²C-compatible interface, full read/write of wiper register, power-on present to midscale
• Power supply range from 2.7 to 5.5V (VDD = 5V ± 10%, -40°C <lt/> to <lt/>+125°C)
• 45ppm/°C typical resistance temperature coefficient (VDD = 5V ± 10%, -40°C <lt/> to <lt/>+125°C)
• 0.9µA at 3.3V typical low power, IDD
• 75ohm output resistance (Code = 0x00, VA = VDD, -40°C <lt/> to <lt/> +125°C)
• Typical full-scale error is -2LSB (Code = 0x7F, code = 0x00, VA = VDD, -40°C <lt/> to <lt/> +125°C)
• 40μW typical power dissipation (VDD = 5V ± 10%, VA = VDD, −40°C <lt/> to <lt/> +125°C)
• 1.2MHz typical bandwidth -3dB (RAB = 5kohm, code = 0x40)
• 6-lead SC70 package, operating temperature range from -40°C to +125°C

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