AD5122BRUZ10-RL7

Overview

The AD5122BRUZ10-RL7 is a dual-channel, nonvolatile digital potentiometer manufactured by Analog Devices Inc. It features two independent 10 kΩ resistive networks with 128 tap positions controlled via an SPI-compatible interface. The device operates on a single supply voltage ranging from 2.3 V to 5.5 V or a dual supply of ±2.25 V to ±2.75 V, with a logic supply range of 1.8 V to 5.5 V. Key electrical specifications include a maximum resistor tolerance of ±8%, a typical temperature coefficient of 35 ppm/°C, and a bandwidth of 3 MHz for the 10 kΩ configuration. It is housed in a 16-lead TSSOP package.

Feature Summary

• Dual-channel architecture with 128-position resolution and nonvolatile EEPROM storage.
• SPI-compatible serial interface supporting read/write operations for RDAC registers and memory.
• Wide operating temperature range from −40°C to +125°C and AEC-Q100 automotive qualification.
• Linear gain setting mode enabled via the INDEP pin for independent string resistor programming.

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 datasheet revision to confirm package type and tape-and-reel specifications. Ensure compatibility with system voltage requirements, as the device supports both single and dual-supply configurations. Confirm that the SPI interface timing parameters align with the host controller's clock polarity and phase settings.

Selection Notes

Select this component when a dual-channel solution with nonvolatile memory retention is required. The 10 kΩ resistance value provides a 3 MHz bandwidth, suitable for AC signal applications. Verify that the ±8% tolerance meets the circuit's precision requirements. For systems requiring independent control of each potentiometer string at power-up, utilize the hardware INDEP pin feature.

Part Context

This part belongs to the AD5122/AD5142 family of dual-channel digital potentiometers. The AD5122 variant specifically offers 128 tap positions, whereas the AD5142 provides 256 taps. Both share similar electrical characteristics but differ in resolution. The BRUZ10 designation indicates the 10 kΩ resistance option packaged in TSSOP.

Replacement Considerations

The AD5122WBRUZ10-RL7 is listed as a parameter-equivalent alternative within the same product family.