ATF-53189-TR2

Overview

The ATF-53189-TR2 is an Enhancement Mode Pseudomorphic HEMT (E-pHEMT) FET manufactured by Broadcom Limited, packaged in a surface-mount SOT-89 form factor. It operates within a frequency range of 50 MHz to 6 GHz and utilizes single positive gate voltage control. Key electrical specifications at 2 GHz with Vds = 4.0V and Ids = 135 mA include a typical gain of 15.5 dB, a noise figure of 0.85 dB, and an output third-order intercept point (OIP3) of 40.0 dBm. The device delivers 23.0 dBm output power at 1dB gain compression and achieves a Power Added Efficiency (PAE) of 46% under these conditions.

Feature Summary

• Single voltage operation utilizing enhancement mode technology that eliminates the need for negative gate bias voltages.
• High linearity performance characterized by elevated output third-order intercept points suitable for complex modulation schemes.
• Low noise figure design optimized for front-end signal amplification applications.
• Robust reliability metrics indicated by extended mean time to failure ratings.

Applications

• Front-end Low Noise Amplifier (LNA) stages for Cellular/PCS and WCDMA wireless infrastructure
• Driver or pre-driver amplifier configurations in cellular base stations
• Driver amplifiers for Wireless Local Loop (WLL), Wireless Local Area Network (WLAN), and MMDS systems

Procurement Notes

Verify component authenticity through authorized distribution channels. Confirm package orientation markings align with standard SOT-89 pinout definitions. Ensure storage and handling procedures comply with moisture sensitivity level requirements specified in the datasheet to prevent internal damage during soldering processes.

Selection Notes

Evaluate thermal management capabilities as total power dissipation is limited to 1.0 Watt. Consider bias voltage and current settings to optimize the trade-off between gain, linearity, and efficiency. Verify impedance matching networks are designed for the specific operating frequency band to maximize power transfer and stability.

Part Context

This component belongs to the ATF-53189 family of RF transistors. The -TR2 suffix indicates tape-and-reel packaging for automated assembly. The device represents an evolution in pseudomorphic HEMT technology, offering improved uniformity and simplified biasing compared to depletion mode alternatives.

Replacement Considerations

Direct functional substitutes within the same E-pHEMT category should be evaluated based on pin compatibility and electrical parameter overlap. Cross-reference specific gain and noise figures against target application requirements before substitution.

FAQ

What is the operational gate voltage requirement?

The device requires a single positive gate-source voltage, typically around 0.65V at the nominal bias point, eliminating the need for negative bias supplies.

How does the device handle electrostatic discharge?

The datasheet specifies robustness against electrostatic discharge exceeding 25,000 Volts, though standard ESD precautions during handling are recommended.

What is the maximum drain-source voltage?

The absolute maximum rating for Drain-Source Voltage (Vds) is 7 Volts.