AD5170BRMZ100

Overview

The AD5170BRMZ100 is a single-channel, 256-position digital potentiometer manufactured by Analog Devices Inc. It features an end-to-end resistance of 10 kΩ with a tolerance of ±20% and a temperature coefficient of 35 ppm/°C. The device operates on a single supply voltage ranging from 2.7 V to 5.5 V, drawing a maximum supply current of 6 µA. It utilizes a two-wire I²C-compatible serial interface for control and includes programmable address decode pins (AD0, AD1). The component is housed in a compact 10-lead MSOP package measuring 3 mm × 4.9 mm.

Feature Summary

• Two-time programmable (TTP) fuse link technology allows permanent resistance setting with unlimited pre-programming adjustments.
• I²C-compatible 2-wire serial interface with full read/write capability for the wiper register.
• Power-on preset to midscale ensures a known initial state upon startup.
• Wide operating temperature range from −40°C to +125°C.

Applications

• Systems calibration
• Electronics level setting
• Replacement for mechanical trimmers in new designs
• Permanent factory PCB settings
• Transducer adjustment for pressure, temperature, position, chemical, and optical sensors

Procurement Notes

Verify the specific suffix '100' against the manufacturer's official ordering guide to confirm the 10 kΩ resistance value and package type. Ensure that the design accounts for the OTP programming voltage requirements if permanent storage is needed. Check for availability status as distribution channels may vary.

Selection Notes

Select this component when a non-volatile digital potentiometer with high reliability is required. The 10 kΩ resistance value suits applications needing moderate impedance levels. Consider the I²C interface compatibility with the host controller and ensure the supply voltage falls within the 2.7 V to 5.5 V range. The TTP feature is ideal for factory-set applications where field adjustments are unnecessary after initial programming.

Part Context

The AD5170 belongs to the AD517x family of 256-position digital potentiometers. This family shares common features such as the I²C interface, MSOP packaging, and TTP memory technology. Variants within the family differ primarily in end-to-end resistance values (2.5 kΩ, 10 kΩ, 50 kΩ) and specific suffix codes indicating resistance or package options.

Replacement Considerations

Direct replacements must match the 10 kΩ resistance, 256 positions, I²C interface, and MSOP-10 package. Verify pinout compatibility and electrical specifications such as supply voltage range and temperature coefficient. Cross-reference with other Analog Devices digital potentiometers like the AD5171 or AD5172 if interface differences are acceptable.