Overview
The AD5245BRJZ5-R2 is a 256-position digital potentiometer produced by Analog Devices Inc. This component is designed to replace mechanical potentiometers or variable resistors in various applications, offering enhanced resolution, solid-state reliability, and a low temperature coefficient. It is packaged in a compact SOT-23-8 package, making it suitable for space-constrained designs. The device operates on a single supply voltage ranging from 2.7V to 5.5V and features an I2C-compatible digital interface for controlling the wiper settings and reading back the wiper register content.
Key Specifications
| Parameter | Value |
|---|---|
| Manufacturer | Analog Devices Inc. |
| Package / Case | SOT-23-8 |
| Number of Pins | 8 |
| Number of Positions | 256 |
| Resistance | 5 kΩ (also available in 10 kΩ, 50 kΩ, 100 kΩ) |
| Voltage - Supply | 2.7V ~ 5.5V |
| Interface | I2C |
| Operating Temperature | -40°C ~ 125°C |
| Temperature Coefficient | 45 ppm/°C |
| Power Consumption | 8 µA (typical) |
| Mounting Type | Surface Mount |
| Moisture Sensitivity Level (MSL) | 1 (Unlimited) |
Key Features
- 256-position digital potentiometer with end-to-end resistance of 5 kΩ, 10 kΩ, 50 kΩ, or 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.
- Low power consumption: IDD = 8 µA.
- 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 and 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 package type of the AD5245BRJZ5-R2?
The AD5245BRJZ5-R2 is packaged in a SOT-23-8 package.
- How many positions does the AD5245BRJZ5-R2 digital potentiometer have?
The AD5245BRJZ5-R2 has 256 positions.
- What is the operating supply voltage range of the AD5245BRJZ5-R2?
The operating supply voltage range is from 2.7V to 5.5V.
- What interface does the AD5245BRJZ5-R2 use for communication?
The AD5245BRJZ5-R2 uses an I2C-compatible digital interface.
- What is the temperature coefficient of the AD5245BRJZ5-R2?
The temperature coefficient is 45 ppm/°C.
- What are some common applications of the AD5245BRJZ5-R2?
Common applications include mechanical potentiometer replacement, LCD panel adjustments, transducer adjustments, RF amplifier biasing, and automotive electronics adjustment.
- What is the typical power consumption of the AD5245BRJZ5-R2?
The typical power consumption is 8 µA.
- What is the operating temperature range of the AD5245BRJZ5-R2?
The operating temperature range is from -40°C to +125°C.
- Does the AD5245BRJZ5-R2 have any special power-on settings?
Yes, it has a power-on preset to midscale.
- Is the AD5245BRJZ5-R2 RoHS compliant?
Yes, the AD5245BRJZ5-R2 is ROHS3 compliant.
