AD5200BRM50

Overview

The AD5200BRM50 is a single-channel, 8-bit digital potentiometer with 256 tap positions and a nominal end-to-end resistance of 50 kΩ. It operates on a single supply from 2.7 V to 5.5 V or dual supplies of ±2.7 V. The device features a 3-wire SPI-compatible serial interface for data input and includes an internal power-on midscale preset. Key electrical characteristics include a wiper resistance of 100 Ω max at 5 V, a temperature coefficient of 500 ppm/°C, and a shutdown current of 5 µA max. It is housed in a compact 10-lead MSOP package.

Feature Summary

• 256-position resolution with linear taper
• 3-wire SPI-compatible serial interface
• Internal power-on midscale preset
• Shutdown mode with microwatt power consumption

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 ordering suffix against the manufacturer's official documentation to confirm the exact resistance value (e.g., '50' indicates 50 kΩ) and packaging type. Ensure compatibility with the system's voltage levels and serial communication protocols before integration.

Selection Notes

Select this component when a single variable resistor with 256 discrete steps is required. The 50 kΩ nominal resistance and 500 ppm/°C temperature coefficient are suitable for general-purpose analog signal conditioning. Verify that the 100 Ω maximum wiper resistance meets the circuit's load requirements.

Part Context

This part belongs to the AD5200/AD5201 family of digital potentiometers. The AD5200 variant provides 256 positions controlled by an 8-bit code, whereas the AD5201 offers 33 positions with a 6-bit code. Both share similar interface and power specifications but differ in resolution and internal switch architecture.

Replacement Considerations

Direct functional substitutes within the same family include the AD5200BRMZ50 (MSOP-10 package) or AD5200BRU50 (SOIC-10 package). When replacing, ensure the pinout matches and verify that the thermal resistance and package dimensions fit the existing PCB layout.