Overview
The AD5161BRMZ100-RL7, produced by Analog Devices Inc., is a digital potentiometer that offers a compact and reliable solution for 256-position adjustment applications. This device is packaged in a 10-lead MSOP (3 mm × 4.9 mm) and functions as an electronic replacement for mechanical potentiometers or variable resistors, providing enhanced resolution and solid-state reliability. It operates with a single supply voltage ranging from 2.7 V to 5.5 V and consumes less than 5 μA, making it suitable for battery-operated applications.
Key Specifications
| Parameter | Value | Unit |
|---|---|---|
| End-to-end Resistance | 100 kΩ | |
| Number of Positions | 256 | |
| Package Type | 10-Lead MSOP | |
| Package Dimensions | 3 mm × 4.9 mm | |
| Supply Voltage Range | 2.7 V to 5.5 V | V |
| Supply Current | 3 to 8 μA | μA |
| Operating Temperature Range | −40°C to +125°C | °C |
| Interface | SPI/I2C compatible | |
| Power-on Preset | Midscale | |
| Temperature Coefficient | 45 ppm/°C | ppm/°C |
Key Features
- Pin selectable SPI/I2C compatible digital interface
- Full read/write of wiper register
- Power-on preset to midscale
- Low power consumption (IDD = 8 μA)
- Low temperature coefficient (45 ppm/°C)
- Wide operating temperature range (−40°C to +125°C)
- SDO output allows multiple device daisy-chaining
- Extra package address decode pin AD0 for I2C mode
Applications
- Mechanical potentiometer replacement in new designs
- Transducer adjustment of pressure, temperature, position, chemical, and optical sensors
- RF amplifier biasing
- Gain control and offset adjustment
Q & A
- What is the primary function of the AD5161BRMZ100-RL7? The AD5161BRMZ100-RL7 functions as a digital potentiometer, replacing mechanical potentiometers or variable resistors with enhanced resolution and solid-state reliability.
- What are the available end-to-end resistance values for the AD5161 series? The AD5161 series offers end-to-end resistance values of 5 kΩ, 10 kΩ, 50 kΩ, and 100 kΩ.
- What is the package type and dimensions of the AD5161BRMZ100-RL7? The device is packaged in a 10-lead MSOP with dimensions of 3 mm × 4.9 mm.
- What is the supply voltage range for the AD5161BRMZ100-RL7? The supply voltage range is from 2.7 V to 5.5 V.
- How much current does the AD5161BRMZ100-RL7 consume? The device consumes less than 5 μA.
- What are the operating temperature limits for the AD5161BRMZ100-RL7? The operating temperature range is from −40°C to +125°C.
- What types of digital interfaces are supported by the AD5161BRMZ100-RL7? The device supports both SPI and I2C compatible digital interfaces.
- Can multiple AD5161 devices be daisy-chained? Yes, the SDO output allows multiple devices to be daisy-chained.
- What is the power-on preset state of the wiper register? The wiper register is preset to midscale on power-on.
- What is the temperature coefficient of the AD5161BRMZ100-RL7? The temperature coefficient is 45 ppm/°C.
