AD5201BRMZ10

Overview

The AD5201BRMZ10 is a single-channel, 33-position digital potentiometer manufactured by Analog Devices. It features a nominal end-to-end resistance of 10 kΩ with a tolerance of ±30% and a temperature coefficient of 500 ppm/°C. The device operates on a single supply voltage ranging from 2.7 V to 5.5 V or dual supplies of ±2.7 V. It utilizes a 3-wire SPI-compatible serial interface for control, accepting a 6-bit data word to adjust the wiper position. Key electrical characteristics include a maximum wiper resistance of 100 Ω at 5 V, a shutdown current of 5 µA max, and an operating temperature range of –40 °C to +85 °C.

Feature Summary

• 33-Position Resolution: Provides 33 discrete tap points controlled via a 6-bit serial data word.
• Low Power Shutdown: SHDN pin forces A terminal open and shorts Wiper to B, achieving microwatt power consumption while retaining latch settings.
• Internal Power-On Preset: Automatically sets the wiper to midscale (Code 10H) upon power-up.
• Compact Packaging: Available in a 10-lead MSOP package measuring 3 mm x 3 mm with a height of 0.85 mm.

Applications

• Mechanical Potentiometer Replacement
• Instrumentation Gain and Offset Adjustment
• Programmable Voltage-to-Current Conversion
• Programmable Filters, Delays, and Time Constants
• Line Impedance Matching

Procurement Notes

Verify the specific suffix 'BRMZ10' against the manufacturer's ordering guide to confirm the 10 kΩ resistance value and MSOP package type. Ensure compatibility with the system's 3-wire SPI timing requirements, specifically CS setup and hold times. Confirm that the 33-position resolution meets the application's precision needs, as codes above 32 map to the final position.

Selection Notes

Select the AD5201 over the AD5200 when fewer adjustment steps are required, as it offers 33 positions compared to 256. Choose the '10' suffix for a 10 kΩ nominal resistance; use '50' for 50 kΩ. This component is suitable for applications requiring low power shutdown and internal preset functionality. Verify that the 500 ppm/°C temperature coefficient aligns with the circuit's stability requirements.

Part Context

The AD5201 is part of the AD5200/AD5201 family of programmable resistor devices. While the AD5200 provides 256 positions (8-bit), the AD5201 offers 33 positions (6-bit). Both share identical interfaces, power supply ranges, and physical footprints, allowing for design flexibility based on resolution requirements without changing the PCB layout.

Replacement Considerations

Publicly confirmed substitute part numbers are not available in the provided documentation. When replacing mechanical potentiometers, ensure the new digital solution supports the required voltage swing and current limits (±20 mA max).