Overview
The AD5245BRJZ10-RL7 is a 256-position I2C-compatible digital potentiometer produced by Analog Devices Inc. This device serves as an electronic replacement for mechanical potentiometers or variable resistors, offering enhanced resolution, solid-state reliability, and superior low temperature coefficient performance. It operates within a compact 8-Lead SOT-23 package, measuring 2.9 mm × 3 mm, making it suitable for a variety of applications requiring precise digital adjustment.
Key Specifications
| Parameter | Min | Typ | Max | Unit |
|---|---|---|---|---|
| End-to-end Resistance | 5 kΩ, 10 kΩ, 50 kΩ, 100 kΩ | - | - | - |
| Number of Positions | - | 256 | - | - |
| Power Supply Range | 2.7 V | - | 5.5 V | V |
| Supply Current | - | 8 µA | - | µA |
| Operating Temperature Range | -40°C | - | 125°C | °C |
| Differential Nonlinearity (DNL) | -1.5 LSB | - | +1.5 LSB | LSB |
| Integral Nonlinearity (INL) | -1.5 LSB | - | +1.5 LSB | LSB |
| Voltage Divider Temperature Coefficient | - | 15 ppm/°C | - | ppm/°C |
| Full-Scale Error | -6 LSB | - | +2.5 LSB | LSB |
| Zero-Scale Error | 0 LSB | - | +2 LSB | LSB |
| Shutdown Supply Current | 0.01 µA | - | 1 µA | µA |
Key Features
- I2C-compatible digital interface for controlling and reading the wiper register content.
- Compact 8-Lead SOT-23 package (2.9 mm × 3 mm).
- Fast settling time: 5 µs typical on power-up.
- Power-on preset to midscale.
- Extra package address decode pin AD0 for up to two devices on the same bus.
- Single supply operation: 2.7 V to 5.5 V.
- Low power consumption: 8 µA typical.
- Wide operating temperature range: –40°C to +125°C.
- Low temperature coefficient: 15 ppm/°C.
- Command bits for resetting the wiper position to midscale or shutting down the device.
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 AD5245BRJZ10-RL7 used for? The AD5245BRJZ10-RL7 is used as a digital potentiometer, replacing mechanical potentiometers or variable resistors in various applications.
- What is the package type of the AD5245BRJZ10-RL7? The device is packaged in an 8-Lead SOT-23 package.
- What is the operating voltage range of the AD5245BRJZ10-RL7? The device operates from a single supply of 2.7 V to 5.5 V.
- How many positions does the AD5245BRJZ10-RL7 have? The device has 256 positions.
- What is the typical supply current of the AD5245BRJZ10-RL7? The typical supply current is 8 µA.
- What is the operating temperature range of the AD5245BRJZ10-RL7? The device operates from –40°C to +125°C.
- How does the AD5245BRJZ10-RL7 communicate? The device uses an I2C-compatible digital interface.
- What is the temperature coefficient of the AD5245BRJZ10-RL7? The temperature coefficient is 15 ppm/°C.
- Can multiple AD5245BRJZ10-RL7 devices be used on the same bus? Yes, up to two devices can be used on the same bus using the AD0 address decode pin.
- What are some common applications of the AD5245BRJZ10-RL7? Common applications include LCD panel adjustments, transducer adjustments, RF amplifier biasing, and automotive electronics.
