Overview
The AD5245BRJZ100-R2, produced by Analog Devices Inc., is a 256-position I2C-compatible digital potentiometer. This device offers a compact solution for adjustment applications, replacing mechanical potentiometers or variable resistors with enhanced resolution, solid-state reliability, and superior low temperature coefficient performance. The AD5245 is packaged in a compact SOT-23-8 (2.9 mm × 3 mm) package and operates from a single supply voltage of 2.7 V to 5.5 V, making it suitable for a wide range of applications, including portable battery-operated devices.
Key Specifications
| Parameter | Value | Unit |
|---|---|---|
| Number of Positions | 256 | |
| End-to-end Resistance | 5 kΩ, 10 kΩ, 50 kΩ, 100 kΩ | |
| Package Type | SOT-23-8 | |
| Package Dimensions | 2.9 mm × 3 mm | |
| Settling Time (typ) | 5 µs | |
| Power Supply Range | 2.7 V to 5.5 V | V |
| Supply Current (typ) | 8 µA | µA |
| Operating Temperature Range | –40°C to +125°C | °C |
| Temperature Coefficient | 45 ppm/°C |
Key Features
- 256-position digital potentiometer with I2C-compatible interface
- End-to-end resistance options: 5 kΩ, 10 kΩ, 50 kΩ, 100 kΩ
- Compact SOT-23-8 package (2.9 mm × 3 mm)
- Fast settling time: 5 µs typical on power-up
- Full read/write of wiper register
- Power-on preset to midscale
- Extra package address decode pin (AD0) for multiple device addressing
- Low power consumption: 8 µA typical
- Wide operating temperature range: –40°C to +125°C
- Low temperature coefficient: 45 ppm/°C
Applications
- Mechanical potentiometer replacement in new designs
- LCD panel VCOM adjustment
- LCD panel brightness and 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 AD5245BRJZ100-R2 used for?
The AD5245BRJZ100-R2 is a digital potentiometer used to replace mechanical potentiometers or variable resistors in various applications, offering enhanced resolution and reliability.
- What are the end-to-end resistance options for the AD5245?
The AD5245 is available with end-to-end resistances of 5 kΩ, 10 kΩ, 50 kΩ, and 100 kΩ.
- What is the package type and dimensions of the AD5245?
The AD5245 is packaged in a SOT-23-8 package with dimensions of 2.9 mm × 3 mm.
- What is the typical settling time of the AD5245 on power-up?
The typical settling time of the AD5245 on power-up is 5 µs.
- What is the power supply range for the AD5245?
The AD5245 operates from a single supply voltage of 2.7 V to 5.5 V.
- What is the typical supply current of the AD5245?
The typical supply current of the AD5245 is 8 µA.
- What is the operating temperature range of the AD5245?
The operating temperature range of the AD5245 is –40°C to +125°C.
- What is the temperature coefficient of the AD5245?
The temperature coefficient of the AD5245 is 45 ppm/°C.
- Can multiple AD5245 devices be addressed on the same bus?
Yes, the AD5245 includes an extra package address decode pin (AD0) to allow multiple devices to be addressed on the same bus.
- What are some common applications of the AD5245?
Common applications include mechanical potentiometer replacement, LCD panel adjustments, transducer adjustments, RF amplifier biasing, automotive electronics, and gain control and offset adjustments.
