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AD5246
128 Position I2C Compatible Programmable Resistor in SC70 Package
Overview
Features and Benefits
- 128-position
- End-to-end resistance 5 kΩ, 10 kΩ, 50 kΩ, 100 kΩ
- Ultracompact SC70-6 (2 mm × 2.1 mm) package
- I2C® 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 –40°C to +125°C
Product Details
The AD5246 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 variable resistor. Available in four different end-to-end resistance values (5 kΩ, 10 kΩ, 50 kΩ, 100 kΩ), these low temperature coefficient devices are ideal for high accuracy and stability variable resistance adjustments.
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.
Operating from a 2.7 V to 5.5 V power supply and consuming 3 μA allows for usage in portable battery-operated applications.
APPLICATIONS
- 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
Product Categories
Product Lifecycle
Production
At least one model within this product family is in production and available for purchase. The product is appropriate for new designs but newer alternatives may exist.
Evaluation Kits (1)
Documentation
Application Notes (1)
Frequently Asked Questions (1)
Software & Systems Requirements
Device Drivers
Reference Materials
Product Selection Guide (1)
Design Resources
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PCN-PDN Information
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