AD5207BRUZ100

Overview

The AD5207BRUZ100 is a dual-channel, 8-bit digital potentiometer from Analog Devices. It provides two independent variable resistors with 256 tap positions and a nominal resistance of 100 kΩ. The device operates on a single supply voltage ranging from 2.7 V to 5.5 V or a dual supply of ±2.2 V to ±2.7 V. Control is achieved via a 3-wire SPI-compatible serial interface requiring a 10-bit data word (2 address bits, 8 data bits). Key electrical characteristics include a temperature coefficient of 500 ppm/°C, wiper resistance up to 100 Ω, and a shutdown current of less than 5 µA when the SHDN pin is active.

Feature Summary

• Dual-channel architecture with 256 programmable positions per channel
• Nominal resistance options including 100 kΩ with ±30% tolerance
• 3-wire SPI-compatible serial interface for data input and daisy-chaining capability
• Power-down mode via SHDN pin achieving microwatt-level current consumption

Applications

• Mechanical potentiometer replacement in embedded systems
• Stereo channel audio level control
• Instrumentation gain and offset adjustment
• Programmable filters, delays, and time constants
• Line impedance matching

Procurement Notes

Verify the specific ordering suffix against the manufacturer's guide to confirm resistance value and packaging type. The BRUZ variant indicates an industrial temperature range (-40°C to +125°C) and TSSOP-14 package. Confirm availability status as distribution channels may list limited stock or discontinuation notices for specific reel quantities.

Selection Notes

Select this component when dual-channel digital adjustment is required without non-volatile memory storage. Ensure the system logic levels are compatible with the 3-wire serial interface. Consider the 100 kΩ nominal resistance and 500 ppm/°C temperature coefficient against application stability requirements. Verify that the 256-position resolution meets the precision needs compared to higher-resolution alternatives like the AD5231.

Part Context

The AD5207 belongs to the AD520x family of 256-position digital potentiometers. It shares functional similarities with the AD5200 but offers dual channels instead of a single channel. The part number suffix '100' denotes the 100 kΩ resistance value, while 'RUZ' specifies the thin TSSOP-14 package suitable for space-constrained applications like PCMCIA cards.

Replacement Considerations

The AD5200 serves as a single-channel alternative within the same family. For drop-in compatibility regarding pinout and interface, verify against other AD8402 series devices which share similar addressing schemes. No direct cross-manufacturer substitutes are documented in the provided datasheet.