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Product Detailed Parameters
- Description：IC DGT POT 10KOHM 256TAP 20TSSOP
- Series：-
- Mfr：Analog Devices Inc.
- Package：Tape & Reel (TR),Cut Tape (CT)
- Taper：Linear
- Configuration：Potentiometer
- Number of Circuits：4
- Number of Taps：256
- Resistance (Ohms)：10k
- 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)：55
- Grade：-
- Qualification：-
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Overview
The AD5144BRUZ10-RL7 is a quad-channel, 256-position nonvolatile digital potentiometer from Analog Devices. It features a 10 kΩ nominal resistance with an 8% maximum tolerance and a 35 ppm/°C temperature coefficient. The device supports SPI or I2C interfaces for setting wiper positions via RDAC registers and EEPROM storage. Operating on a single supply of 2.3 V to 5.5 V or dual supplies up to ±2.75 V, it provides a 3 MHz bandwidth and ±6 mA continuous wiper current. Packaged in a 20-lead TSSOP, it operates within a -40°C to +125°C range.
Feature Summary
- Quad-channel architecture with 256 tap positions per channel
- Nonvolatile memory (EEPROM) retains settings during power loss
- Supports both SPI and I2C serial communication protocols
- Linear gain setting mode for accurate resistor matching
- Low wiper resistance of 55 Ω typical at zero scale
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 interface configuration required for the design. The 'B' suffix indicates support for both SPI and I2C protocols, while the 'RUZ' denotes the 20-lead TSSOP package. Confirm that the 10 kΩ resistance value aligns with the target circuit impedance requirements before finalizing procurement.
Selection Notes
Select this component when four independent digital potentiometers are needed in a compact form factor. Ensure the application voltage stays within the 2.3 V to 5.5 V single-supply range. For applications requiring bipolar signal adjustment, verify compatibility with the dual-supply operation capability up to ±2.75 V.
Part Context
This part belongs to the AD5144 family, which offers 256-position resolution. It is distinct from the AD5124 (128 positions) and AD5144A (I2C only). The BRUZ10 variant specifically combines the quad-channel 256-tap architecture with the 10 kΩ resistor option in a surface-mount TSSOP package.
Replacement Considerations
The AD5144ABRUZ10-RL7 is a compatible alternative if only I2C interface functionality is required. For higher resolution needs, consider the AD5146 series. Verify pinout compatibility when substituting with other members of the AD5124/AD5144 family.
