Overview
The AD5245BRJZ10-R2, produced by Analog Devices Inc., is a 256-position I2C-compatible digital potentiometer. This device is designed to replace mechanical potentiometers or variable resistors, offering enhanced resolution, solid-state reliability, and superior low temperature coefficient performance. It is packaged in a compact SOT-23-8 (2.9 mm × 3 mm) package, making it suitable for a variety of applications where space is limited.
Key Specifications
| Parameter | Value | Unit |
|---|---|---|
| End-to-end Resistance | 10 kΩ | Ω |
| Number of Positions | 256 | - |
| Package Type | SOT-23-8 | - |
| Package Dimensions | 2.9 mm × 3 mm | mm |
| Power Supply Range | 2.7 V to 5.5 V | V |
| Supply Current (IDD) | 8 µA | µA |
| Operating Temperature | –40°C to +125°C | °C |
| Temperature Coefficient | 45 ppm/°C | ppm/°C |
| Settling Time (tS) | 5 µs (typ) | µs |
Key Features
- I2C-compatible digital interface for controlling and reading wiper settings
- Power-on preset to midscale
- Extra package address decode pin (AD0) for multiple device addressing
- Fast settling time: 5 µs typical on power-up
- Full read/write of wiper register
- Low power consumption: 8 µA
- Wide operating temperature range: –40°C to +125°C
- Low temperature coefficient: 45 ppm/°C
- Single supply operation: 2.7 V to 5.5 V
Applications
- Mechanical potentiometer replacement in new designs
- LCD panel VCOM adjustment and brightness/contrast control
- Transducer adjustment for pressure, temperature, position, chemical, and optical sensors
- RF amplifier biasing
- Automotive electronics adjustment
- Gain control and offset adjustment
Q & A
- What is the primary function of the AD5245BRJZ10-R2? The AD5245BRJZ10-R2 is a digital potentiometer that replaces mechanical potentiometers or variable resistors, offering enhanced resolution and reliability.
- What is the end-to-end resistance of the AD5245BRJZ10-R2? The end-to-end resistance is 10 kΩ.
- How many positions does the AD5245BRJZ10-R2 have? It has 256 positions.
- What is the package type and dimensions of the AD5245BRJZ10-R2? It is packaged in an SOT-23-8 package with dimensions of 2.9 mm × 3 mm.
- What is the power supply range for the AD5245BRJZ10-R2? The power supply range is from 2.7 V to 5.5 V.
- What is the typical supply current (IDD) of the AD5245BRJZ10-R2? The typical supply current is 8 µA.
- What is the operating temperature range of the AD5245BRJZ10-R2? The operating temperature range is from –40°C to +125°C.
- How does the AD5245BRJZ10-R2 handle multiple device addressing? It uses an extra package address decode pin (AD0) for multiple device addressing.
- What is the settling time of the AD5245BRJZ10-R2 on power-up? The settling time is typically 5 µs on power-up.
- Can the wiper register of the AD5245BRJZ10-R2 be read and written? Yes, the wiper register can be fully read and written.
