AD5170BRM10

Overview

The AD5170BRM10 is a single-channel, 256-position digital potentiometer from Analog Devices. It features an end-to-end resistance of 10 kΩ with a nominal 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 full read/write access to the wiper register. Key specifications include a typical power-up settling time of 5 µs and an operating temperature range from −40°C to +125°C.

Feature Summary

• Two-time programmable (TTP) fuse link technology allows permanent resistance setting with unlimited pre-programming adjustments.
• Compact 10-lead MSOP package measuring 3 mm × 4.9 mm.
• Extra address decode pins (AD0 and AD1) enable multiple devices on the same bus.
• Power-on preset to midscale ensures a known initial state.

Applications

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

Procurement Notes

Verify the specific suffix 'BRM10' against the manufacturer's ordering guide to confirm the exact resistance value and package variant. Confirm that the required OTP programming capability aligns with the system design, as this feature requires a dedicated high-voltage supply during the one-time programming phase.

Selection Notes

Select the AD5170BRM10 when a nonvolatile digital potentiometer with 256 positions is required. Ensure the application can support the 10 kΩ nominal resistance and the specified ±20% tolerance. Verify that the I²C bus speed requirements are compatible with the device's 400 kHz SCL clock frequency limit.

Part Context

This component belongs to the AD517x family of digital potentiometers. It shares the same 10-lead MSOP footprint and I²C interface architecture as other variants in the series, such as the 2.5 kΩ and 50 kΩ versions. The primary distinction lies in the end-to-end resistance value and specific electrical characteristics like bandwidth.

Replacement Considerations

Direct replacements within the same package and interface include the AD5170BRM2.5 and AD5170BRMZ50. Cross-family replacements may require verification of pin compatibility and software register mapping.