AD5170BRMZ10-RL7

Overview

The AD5170BRMZ10-RL7 is a 256-position, two-time programmable (TTP) digital potentiometer from Analog Devices. It features an I²C-compatible interface and operates on a single supply voltage ranging from 2.7 V to 5.5 V. The device provides an end-to-end resistance of 10 kΩ with a temperature coefficient of 35 ppm/°C. Key specifications include a maximum supply current of 6 µA, a typical power-up settling time of 5 µs, and an operating temperature range of −40°C to +125°C. It utilizes fuse link technology for permanent memory retention.

Feature Summary

• Two-Time Programmable (TTP) architecture allowing unlimited adjustments prior to OTP activation and a second-chance permanent programming option.
• I²C-compatible 2-wire serial interface with full read/write capability for the wiper register.
• Compact 10-lead MSOP package measuring 3 mm × 4.9 mm with extra address decode pins (AD0, AD1).
• Power-on preset to midscale and temporary OTP overwrite feature for dynamic adjustments with user-defined presets.

Applications

• Systems calibration and electronics level setting.
• Replacement for mechanical trimmers in new designs.
• Permanent factory PCB settings.
• Transducer adjustment for pressure, temperature, position, chemical, and optical sensors.
• RF amplifier biasing and gain control.

Procurement Notes

Verify component authenticity through authorized distributors or direct manufacturer channels. Confirm the specific suffix RL7 corresponds to the reel packaging format required for assembly. Ensure that the ordering documentation matches the exact part number AD5170BRMZ10-RL7 to avoid discrepancies in resistance tolerance or package type.

Selection Notes

Select this model when a 10 kΩ nominal resistance is required. Verify that the system supply voltage remains within the 2.7 V to 5.5 V operational range. For applications requiring multiple devices on the same bus, utilize the AD0 and AD1 pins for address decoding. Ensure the design accommodates the 5.6 V to 5.8 V OTP supply requirement if permanent programming is necessary.

Part Context

This component belongs to the AD5170 family of digital potentiometers. The BRMZ designation indicates the industrial temperature grade and MSOP package. The -10 suffix specifies the 10 kΩ end-to-end resistance variant. The -RL7 suffix denotes the tape and reel packaging configuration used for automated surface-mount assembly.

Replacement Considerations

Direct replacements must match the 256-position count, I²C interface, and 10 kΩ resistance. Verify pin compatibility with the 10-lead MSOP footprint. Note that other AD5170 variants may offer different resistance values (2.5 kΩ, 50 kΩ) or package types, which require circuit re-evaluation.