AD5173BRMZ10-RL7

Overview

The AD5173BRMZ10-RL7 is a dual-channel, 256-position digital potentiometer featuring one-time programmable (OTP) memory. It operates on a single supply voltage ranging from 2.7 V to 5.5 V with a maximum supply current of 6 µA. The device utilizes an I²C-compatible serial interface for control and includes dedicated address decode pins (AD0, AD1) for multi-device systems. It provides a nominal end-to-end resistance of 10 kΩ with a temperature coefficient of 35 ppm/°C. The component is housed in a compact 10-lead MSOP package measuring 3 mm × 4.9 mm.

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 with full read/write wiper register access
• Programmable address bits (AD0, AD1) for multiple package decoding

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 circuits
• Gain control and offset adjustment modules

Procurement Notes

Verify the specific ordering suffix RL7 corresponds to the required reel packaging configuration. Confirm that the BRMZ variant meets the necessary thermal and electrical specifications for the target application environment. Ensure compatibility with the I²C bus voltage levels and pull-up requirements specified in the datasheet.

Selection Notes

Select this component when nonvolatile resistance settings are required without external EEPROM. The AD5173 differs from the AD5172 by including extra address decode pins (AD0 and AD1). Verify that the 10 kΩ resistance value aligns with the circuit's impedance requirements. Ensure the power supply can provide the necessary voltage for OTP programming if permanent settings are needed.

Part Context

This part belongs to the AD5172/AD5173 family of dual-channel digital potentiometers. It shares core specifications with the AD5172 but adds hardware address decoding capabilities. The series employs thin-film technology for low temperature coefficients and offers a cost-effective alternative to traditional EEMEM solutions for fixed-setting applications.

Replacement Considerations

The AD5172BRMZ10-RL7 is a functional substitute lacking the AD0 and AD1 address pins. Verify pin compatibility as Pin 2 and Pin 8 differ between the two models.