AD5172BRMZ10-RL7

Overview

The AD5172BRMZ10-RL7 is a dual-channel, 256-position digital potentiometer featuring one-time programmable (OTP) memory retention via fuse link technology. It operates on a single supply voltage ranging from 2.7 V to 5.5 V and utilizes an I²C-compatible serial interface for control. The device provides a low-cost alternative to EEPROM for permanent factory settings. Key electrical parameters include a nominal resistance tolerance of ±20%, a temperature coefficient of 35 ppm/°C, and a maximum supply current of 6 µA. It supports full read/write access to the wiper register prior to OTP activation.

Feature Summary

• Dual-channel architecture with 256 tap positions per channel
• One-time programmable (OTP) fuse link technology for permanent setting retention
• I²C-compatible 2-wire serial interface for digital control
• Compact 10-lead MSOP package measuring 3 mm × 4.9 mm

Applications

• Systems calibration requiring permanent factory PCB settings
• Replacement for mechanical trimmers in new designs
• Transducer adjustment for pressure, temperature, position, chemical, and optical sensors
• RF amplifier biasing and gain control offset adjustment

Procurement Notes

Verify the specific ordering suffix RL7 corresponds to the tape and reel packaging configuration required for automated assembly processes. Confirm that the BRMZ variant matches the intended operating temperature range and pinout requirements for the target printed circuit board design before finalizing procurement orders.

Selection Notes

Select this component when a dual-channel solution with non-volatile memory retention is required without the complexity of external EEPROMs. Ensure the system power supply can provide the necessary 5.6 V to 5.8 V during the OTP programming phase, as standard operation only requires 2.7 V to 5.5 V. Verify that the 10 kΩ end-to-end resistance aligns with the impedance requirements of the application circuit.

Part Context

This part belongs to the AD5172/AD5173 family of 256-position digital potentiometers. The AD5172 variant specifically lacks the extra address decode pins found in the AD5173 model, limiting its use in multi-device I²C configurations unless addressed by other means. The BRMZ10 designation indicates the 10 kΩ resistance value within the MSOP package format.

Replacement Considerations

Public confirmed substitute part numbers are not available in the provided documentation.