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Product Detailed Parameters
- Description：IC DGT POT 100KOHM 256TP 20TSSOP
- Series：-
- Mfr：Analog Devices Inc.
- Package：Tube
- Taper：Linear
- Configuration：Potentiometer
- Number of Circuits：4
- Number of Taps：256
- Resistance (Ohms)：100k
- Interface：SPI
- Memory Type：Non-Volatile
- Voltage - Supply：2.3V ~ 5.5V, ±2.25V ~ 2.75V
- Features：Cascade Pin
- Tolerance：±8%
- Temperature Coefficient (Typ)：35ppm/°C
- Mounting Type：Surface Mount
- Supplier Device Package：20-TSSOP
- Package / Case：20-TSSOP (0.173", 4.40mm Width)
- Operating Temperature：-40°C ~ 125°C
- Resistance - Wiper (Ohms) (Typ)：130
- Grade：-
- Qualification：-
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Overview
The AD5144BRUZ100 is a quad-channel, nonvolatile digital potentiometer featuring 256 tap positions and a nominal resistance of 100 kΩ. It operates within a supply voltage range of 2.3 V to 5.5 V with a logic supply of 1.8 V to 5.5 V. The device utilizes an SPI interface for data transfer and includes EEPROM storage to retain wiper settings across power cycles. Key electrical characteristics include a maximum resistor tolerance of ±8%, a temperature coefficient of 35 ppm/°C, and a bandwidth of 0.43 MHz at the 100 kΩ setting.
Feature Summary
- Quad-channel architecture with 256-position resolution and nonvolatile memory
- SPI serial interface with independent logic supply (1.8 V to 5.5 V)
- Low temperature coefficient of 35 ppm/°C and ±8% resistor tolerance
- Extended industrial operating temperature range from −40°C to +125°C
Applications
- Portable electronics level adjustment
- LCD panel brightness and contrast controls
- Programmable filters, delays, and time constants
- Programmable power supplies
Procurement Notes
Verify the specific ordering suffix against the manufacturer's current documentation to confirm package type and interface compatibility. Confirm that the required resistance value and channel count align with the project specifications before finalizing procurement.
Selection Notes
Select this component when a quad-channel configuration with high-resolution 256-tap adjustment is required. Ensure the system design accommodates the 100 kΩ nominal resistance and the specific SPI timing requirements defined in the datasheet.
Part Context
This part belongs to the AD5144 family of digital potentiometers. It shares architectural similarities with the AD5124 but offers higher resolution (256 vs. 128 taps). The BRUZ100 designation indicates the 100 kΩ resistance variant housed in a TSSOP-20 package.
Replacement Considerations
The AD5144ABRUZ100 serves as a functional substitute within the same family, offering identical electrical performance but utilizing an I2C interface instead of SPI.
