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Product Detailed Parameters
- Description：IC DGT POT 100KOHM 256TAP 10MSOP
- Series：-
- Mfr：Analog Devices Inc.
- Package：Tube
- Taper：Linear
- Configuration：Potentiometer
- Number of Circuits：1
- Number of Taps：256
- Resistance (Ohms)：100k
- Interface：I2C, SPI
- Memory Type：Volatile
- Voltage - Supply：2.7V ~ 5.5V
- Features：Cascade Pin, Selectable Address
- Tolerance：±30%
- Temperature Coefficient (Typ)：45ppm/°C
- Mounting Type：Surface Mount
- Supplier Device Package：10-MSOP
- Package / Case：10-TFSOP, 10-MSOP (0.118", 3.00mm Width)
- Operating Temperature：-40°C ~ 125°C
- Resistance - Wiper (Ohms) (Typ)：50
- Grade：-
- Qualification：-
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Overview
The AD5161BRMZ100 is a single-channel, 8-bit digital potentiometer with a nominal end-to-end resistance of 100 kΩ. It features 256 tap positions and operates on a single supply voltage ranging from 2.7 V to 5.5 V. The device supports both SPI and I2C interfaces via a pin-selectable Digital Interface Select (DIS) pin. Key electrical characteristics include a maximum wiper resistance of 120 Ω, a temperature coefficient of 45 ppm/°C, and a typical supply current of 8 µA. It is housed in a compact MSOP-10 package.
Feature Summary
- Pin-selectable SPI or I2C compatible serial interface
- 256-position resolution with linear taper
- Single supply operation from 2.7 V to 5.5 V
- Power-on preset to midscale position
Applications
- Mechanical potentiometer replacement in new designs
- Transducer adjustment for pressure, temperature, and optical sensors
- RF amplifier biasing
- Gain control and offset adjustment circuits
Procurement Notes
Verify the specific ordering suffix to confirm the packaging format, as the base model may be available in tubes or reels. Confirm the DIS pin configuration requirements for the target system's communication protocol before finalizing the component selection.
Selection Notes
Select this component when a 100 kΩ digital resistor is required with low power consumption. Ensure the system logic levels are compatible with the 2.7 V to 5.5 V operating range. Consider the 30% tolerance if precise absolute resistance values are critical without calibration.
Part Context
This part belongs to the AD5161 family of 256-position digital potentiometers. Variants within the series differ primarily by their nominal resistance values (5 kΩ, 10 kΩ, 50 kΩ, and 100 kΩ) and packaging options. The BRMZ suffix indicates the industrial temperature grade and MSOP-10 package.
Replacement Considerations
Direct replacements include other AD5161 variants with different resistance values such as AD5161BRMZ50 or AD5161BRMZ10. Cross-family alternatives like the AD5271 offer non-volatile memory but require verification of interface compatibility and pinout alignment.
