Overview
The AD5161BRM50, manufactured 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-TFSOP or 10-MSOP package, measuring 3 mm x 4.9 mm, making it ideal for space-constrained designs. It operates with a single supply voltage ranging from 2.7 V to 5.5 V and features low power consumption with a typical current draw of 8 μA. The AD5161BRM50 is designed to replace mechanical potentiometers or variable resistors, providing enhanced resolution, solid-state reliability, and a low temperature coefficient of 45 ppm/°C.
Key Specifications
| Parameter | Value | Unit |
|---|---|---|
| Number of Taps | 256 | - |
| Resistance | 50 kΩ | Ω |
| Interface | SPI, I2C | - |
| Supply Voltage | 2.7 V to 5.5 V | V |
| Operating Temperature | -40°C to +125°C | °C |
| Temperature Coefficient | 45 ppm/°C | ppm/°C |
| Bandwidth (-3dB) | 1.2 MHz (at 5 kΩ) | MHz |
| Total Harmonic Distortion | 0.05 % (at 1 kHz, 1 V rms) | % |
| Settling Time | 1 μs (±1 LSB error band) | μs |
| Resistor Noise Voltage Density | 6 nV/√Hz (at 2.5 kΩ) | nV/√Hz |
Key Features
- Compact 10-TFSOP or 10-MSOP package, measuring 3 mm x 4.9 mm.
- Single supply operation from 2.7 V to 5.5 V.
- Low power consumption with a typical current draw of 8 μA.
- 256-position digital potentiometer with SPI or I2C compatible digital interface.
- Low temperature coefficient of 45 ppm/°C.
- Wide operating temperature range from -40°C to +125°C.
- Cascade pin for daisy-chaining multiple devices.
- Selectable address for I2C mode.
Applications
- Mechanical potentiometer replacement in new designs.
- Transducer adjustment for pressure, temperature, position, chemical, and optical sensors.
- RF amplifier biasing.
- Gain control and offset adjustment.
Q & A
- What is the package type of the AD5161BRM50?
The AD5161BRM50 is packaged in a 10-TFSOP or 10-MSOP package, measuring 3 mm x 4.9 mm.
- What is the operating voltage range of the AD5161BRM50?
The AD5161BRM50 operates with a single supply voltage ranging from 2.7 V to 5.5 V.
- What interfaces are supported by the AD5161BRM50?
The AD5161BRM50 supports both SPI and I2C interfaces.
- What is the temperature coefficient of the AD5161BRM50?
The temperature coefficient of the AD5161BRM50 is 45 ppm/°C.
- What is the bandwidth of the AD5161BRM50?
The bandwidth of the AD5161BRM50 is 1.2 MHz at 5 kΩ.
- How many taps does the AD5161BRM50 have?
The AD5161BRM50 has 256 taps.
- What is the typical current draw of the AD5161BRM50?
The typical current draw of the AD5161BRM50 is 8 μA.
- Can multiple AD5161BRM50 devices be daisy-chained?
Yes, multiple AD5161BRM50 devices can be daisy-chained using the SDO to SDI pins in SPI mode.
- What are some common applications of the AD5161BRM50?
The AD5161BRM50 is commonly used in mechanical potentiometer replacement, transducer adjustment, RF amplifier biasing, and gain control and offset adjustment.
- What is the operating temperature range of the AD5161BRM50?
The operating temperature range of the AD5161BRM50 is from -40°C to +125°C.
