Overview
The AD5161BRMZ100 from Analog Devices Inc. is a 256-position digital potentiometer designed to replace mechanical potentiometers and variable resistors in various electronic applications. This device offers enhanced resolution, solid-state reliability, and a low temperature coefficient, making it suitable for a wide range of adjustment needs. It is packaged in a compact 10-lead MSOP or TFSOP, measuring 3 mm x 4.9 mm, and operates over a single supply voltage of 2.7 V to 5.5 V.
Key Specifications
| Parameter | Value |
|---|---|
| Manufacturer | Analog Devices Inc. |
| Part Number | AD5161BRMZ100 |
| Package | 10-lead MSOP, 10-lead TFSOP (0.118, 3.00mm Width) |
| Number of Pins | 10 |
| Number of Positions | 256 |
| Resistor Value | 100 kΩ |
| Tolerance | ±30% |
| Temperature Coefficient | 45 ppm/°C (Typical) |
| Memory Type | Volatile |
| Interface | I²C, SPI |
| Operating Temperature | −40°C to +125°C |
| Supply Voltage | 2.7 V to 5.5 V |
| Current Consumption | 8 μA (Typical) |
Key Features
- 256-position digital potentiometer with SPI or I²C interface for wiper control and readback.
- Single supply operation from 2.7 V to 5.5 V.
- Low power consumption of 8 μA (typical).
- Wide operating temperature range from −40°C to +125°C.
- Low temperature coefficient of 45 ppm/°C (typical).
- Compact 10-lead MSOP or TFSOP packaging.
- Supports daisy-chaining in SPI mode.
- RoHS compliant.
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 AD5161BRMZ100 used for?
The AD5161BRMZ100 is used as a digital potentiometer to replace mechanical potentiometers and variable resistors in various electronic applications. - What are the key interfaces supported by the AD5161BRMZ100?
The device supports both I²C and SPI interfaces for controlling and reading back the wiper settings. - What is the operating temperature range of the AD5161BRMZ100?
The operating temperature range is from −40°C to +125°C. - What is the typical current consumption of the AD5161BRMZ100?
The typical current consumption is 8 μA. - Can the AD5161BRMZ100 be daisy-chained?
Yes, in SPI mode, the device can be daisy-chained using the SDO to SDI connection. - What is the resistor value of the AD5161BRMZ100?
The resistor value is 100 kΩ. - Is the AD5161BRMZ100 RoHS compliant?
Yes, the AD5161BRMZ100 is RoHS compliant. - What is the tolerance of the AD5161BRMZ100?
The tolerance is ±30%. - What is the temperature coefficient of the AD5161BRMZ100?
The temperature coefficient is 45 ppm/°C (typical). - What are some common applications of the AD5161BRMZ100?
Common applications include mechanical potentiometer replacement, transducer adjustment, RF amplifier biasing, and gain control and offset adjustment.
