MAX881REUB-TG075

Overview

The MAX881REUB-TG075 is a specialized power management integrated circuit manufactured by Analog Devices Inc./Maxim Integrated. It functions as a low-noise bias supply designed specifically for GaAsFET power amplifiers, featuring a Power OK status output. The device 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. It supports a maximum output current of 4 mA while maintaining a low quiescent supply current of 500 uA. The component is housed in a 10-pin UMAX package and is rated for operation across a temperature range of -40°C to +85°C.

Feature Summary

• Provides low-noise negative bias voltage generation optimized for GaAsFET PA applications
• Integrates a Power OK signal to indicate valid output voltage status
• Operates with low quiescent current consumption from a single supply source

Applications

• Biasing GaAsFET power amplifiers in RF communication systems
• Negative voltage regulation for specialized analog front-end circuits
• Portable wireless devices requiring efficient low-noise power supplies

Procurement Notes

Verify the exact suffix configuration against the manufacturer's official datasheet to ensure compatibility with specific thermal or electrical requirements. Confirm availability status through authorized distributors as lead times may vary. Ensure the selected variant matches the required package type and operating temperature range for the intended design environment.

Selection Notes

Select this component when designing circuits that require a stable, low-noise negative bias rail for GaAsFET technology. Consider the 4 mA output current capability and the 2.5 V to 5.5 V input range to ensure it meets system power constraints. Evaluate the UMAX package size for PCB layout compatibility and verify thermal performance within the specified -40°C to +85°C operating window.

Part Context

This part belongs to the MAX881R series of specialized PMICs from Maxim Integrated, now part of Analog Devices. These components are engineered for high-performance RF applications where noise sensitivity and power efficiency are critical. The series focuses on providing dedicated bias solutions for compound semiconductor amplifiers, distinguishing itself from general-purpose LDO regulators through its specific optimization for GaAsFET characteristics.

Replacement Considerations

Consult the official datasheet for direct pin-compatible alternatives within the MAX881 family. Verify that any substitute maintains the same output voltage polarity and noise specifications for GaAsFET compatibility.