MAX881REUB-TG069

Overview

The MAX881REUB-TG069 is a specialized low-noise bias supply integrated circuit designed for GaAsFET power amplifier applications. It operates within an input voltage range of 2.5 V to 5.5 V and delivers a regulated negative output voltage between -2.1 V and -1.9 V. The device provides an output current of 4 mA while consuming only 500 uA of quiescent current. It features a Power OK indicator and is housed in a compact 10-UMAX package, suitable for surface-mount installation across a temperature range of -40°C to +85°C.

Feature Summary

• Provides low-noise negative bias regulation specifically optimized for GaAsFET power amplifiers
• Integrates a Power OK status indicator for system monitoring
• Operates with high efficiency using minimal quiescent current consumption

Applications

• Biasing GaAsFET power amplifiers in RF transmitters
• Wireless communication base station modules
• Portable RF equipment requiring stable negative supply rails

Procurement Notes

Verify the specific suffix TG069 against official Analog Devices documentation to confirm tape-and-reel packaging and exact pinout compatibility. Ensure the component matches the required RoHS compliance standards for your region. Cross-reference the manufacturer part number with authorized distributors to confirm availability and authenticity before procurement.

Selection Notes

Select this component when designing circuits that require a precise, low-noise negative voltage rail for GaAsFET PA biasing. It is appropriate for systems operating between 2.5 V and 5.5 V where space is constrained due to its small UMAX footprint. Consider the 4 mA output capability to ensure it meets the specific current demands of the target amplifier stage.

Part Context

This part belongs to the MAX881R series of specialized PMICs from Maxim Integrated. These devices are engineered to simplify power management in RF front-end modules by combining bias generation with status monitoring in a single compact package, reducing board space and component count compared to discrete solutions.

Replacement Considerations

Check for MAX881REUB+ or MAX881REUB+T as potential direct replacements. Verify if alternative suffixes like TG074 offer identical electrical specifications and pinouts. Confirm package compatibility and thermal performance before substituting.