AD5144BRUZ10

Overview

The AD5144BRUZ10 is a quad-channel, nonvolatile digital potentiometer featuring 256 tap positions and an SPI interface. It offers a nominal resistance of 10 kΩ with a maximum tolerance of ±8% and a temperature coefficient of 35 ppm/°C. The device supports single or dual supply operation (VDD: 2.3 V to 5.5 V) and includes independent logic supply support from 1.8 V to 5.5 V. Key electrical parameters include a wiper current of ±6 mA for the 10 kΩ variant, a bandwidth of 3 MHz, and fast start-up time under 75 µs. It is housed in a 20-lead TSSOP package.

Feature Summary

• Quad-channel architecture with 256-position resolution and nonvolatile EEPROM storage.
• SPI serial interface with programmable address capability for multiple devices.
• High bandwidth (3 MHz at 10 kΩ) and low total harmonic distortion (-80 dB).
• Linear gain setting mode allows independent programming of resistance between terminals.

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 'RUZ10' against the manufacturer's official ordering guide to confirm the exact resistance value (10 kΩ), interface type (SPI), and package configuration (TSSOP). Ensure compatibility with system voltage requirements, as the device operates within a 2.3 V to 5.5 V range.

Selection Notes

Select this component when a quad-channel digital potentiometer with nonvolatile memory and SPI control is required. The 10 kΩ resistance option provides higher wiper current capacity (±6 mA) compared to the 100 kΩ variant. Verify that the application requires the specific 256-tap resolution and linear taper characteristics defined in the datasheet.

Part Context

This part belongs to the AD5124/AD5144 family of quad-channel digital potentiometers. The AD5144 variant specifically provides 256 positions, whereas the AD5124 offers 128 positions. The 'B' suffix typically denotes the 10 kΩ resistance option, while 'R' indicates the 100 kΩ option. The 'U' signifies the TSSOP package.

Replacement Considerations

The AD5144A is a compatible alternative within the same family but utilizes an I2C interface instead of SPI. For direct pin-to-pin replacement with identical interface requirements, verify availability of other AD5144 variants with matching resistance values and packaging.