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Integrated Circuits (ICs)
AD5247BKSZ100-1RL7 Digital Potentiometer 100k Ohm 1 Circuit 128 Taps I²C Interface SC-70-6
FEATURES
128 positions
End-to-end resistance: 5 kΩ, 10 kΩ, 50 kΩ, 100 kΩ
Ultracompact, SC70-6 (2 mm × 2.1 mm) package
I 2C-compatible interface
Full read/write of wiper register
Power-on preset to midscale
Single-supply 2.7 V to 5.5 V
Rheostat mode temperature coefficient: 45 ppm/°C
Low power, IDD = 0.9 µA at 3.3 V typical
Wide operating temperature range: −40°C to +125°C
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
FUNCTIONAL BLOCK DIAGRAM
GENERAL DESCRIPTION
The AD5247 provides a compact, 2 mm × 2.1 mm, packaged solution for 128-position adjustment applications. This device performs the same electronic adjustment function as a mechanical potentiometer or a variable resistor. Available in four different end-to-end resistance values (5 kΩ, 10 kΩ, 50 kΩ, and 100 kΩ), these low temperature coefficient devices are ideal for high accuracy and stability variable resistance adjustments. The wiper settings are controllable through the I2 C-compatible digital interface, which can also be used to read back the present wiper register control word. The 10 kΩ and 100 kΩ options each have three hard-coded slave address options available to allow users access to three of these devices on one I2 C bus (see Table 8 for a full list of slave address locations). 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. Operating from a 2.7 V to 5.5 V power supply and consuming 0.9 µA (3.3 V) allows the AD5247 to be used in portable battery-operated applications.
specification of AD5247BKSZ100-1RL7
|
Category |
Integrated Circuits (ICs) |
|
Taper |
Linear |
|
Configuration |
Rheostat |
|
Number of Circuits |
1 |
|
Number of Taps |
128 |
|
Resistance (Ohms) |
100k |
|
Interface |
I²C |
|
Memory Type |
Volatile |
|
Voltage - Supply |
2.7V ~ 5.5V |
|
Tolerance |
±20% |
|
Temperature Coefficient (Typ) |
45ppm/°C |
|
Mounting Type |
Surface Mount |
|
Supplier Device Package |
SC-70-6 |
|
Package / Case |
6-TSSOP, SC-88, SOT-363 |
|
Operating Temperature |
-40°C ~ 125°C |
|
Resistance - Wiper (Ohms) (Typ) |
75 |
