MAX5427EGA

Overview

The MAX5427EGA is a single-channel, one-time programmable (OTP) digital potentiometer manufactured by Analog Devices Inc./Maxim Integrated. It features a resistance value of 100 kOhms with a linear taper and 32 taps for wiper positioning. The device utilizes a non-volatile memory architecture to retain the wiper setting without power. Communication is handled via a serial 2-wire interface. It operates within a supply voltage range of 2.7V to 5.25V and draws a typical operating current of 1.5 uA. The component is housed in an 8-lead TDFN package with an exposed pad and supports surface-mount installation.

Feature Summary

• One-Time Programmable (OTP) non-volatile memory retains wiper position after power cycle
• Linear taper with 32 discrete tap positions
• Serial 2-wire interface for simplified control
• Low power consumption with 1.5 uA operating current

Applications

• Programmable gain amplifiers
• Voltage reference adjustment
• Sensor biasing networks

Procurement Notes

Verify the specific suffix 'EGA' against official Analog Devices documentation to confirm package type and tape/reel specifications. Confirm end-of-life status or obsolescence notices prior to procurement planning. Ensure compatibility with the required 100 kOhm resistance value and 32-tap resolution for the target application design.

Selection Notes

Select this component when a low-pin-count, non-volatile digital potentiometer is required for applications needing only 32 adjustment steps. The OTP feature makes it suitable for factory calibration scenarios where settings do not change during operation. Compare against volatile alternatives like the MAX5422 if dynamic reprogramming is necessary. Verify that the 100 kOhm resistance and 35 ppm/C temperature coefficient meet the circuit's precision requirements.

Part Context

The MAX5427 belongs to the Maxim Integrated family of one-time programmable digital potentiometers. It shares functional similarities with other devices in the series but is distinguished by its specific 100 kOhm resistance value and 32-tap configuration. The EGA suffix typically denotes the specific package variant and packaging method provided by the manufacturer.

Replacement Considerations

For direct pin-compatible replacements with similar OTP functionality, consider the MAX5426 (50 kOhm) or MAX5428 (200 kOhm). If volatile memory is acceptable, the MAX5422 (SPI interface, 256 taps) offers higher resolution but requires different interface logic.