ATF-551M4-TR1

Overview

The ATF-551M4 is a low noise enhancement mode pseudomorphic HEMT in a MiniPak package. It operates from 450 MHz to 10 GHz with super low noise under 1 dB Fmin from 2 to 6 GHz. At 2 GHz, Vds=2.7V, Ids=10mA: NF typ 0.5 dB (max 0.9 dB), Gain typ 17.5 dB (range 15.5–18.5 dB), OIP3 typ 24.1 dBm (min 22 dBm), P1dB typ 14.6 dBm. Absolute max ratings: Vds 5V, Vgs -5 to +1V, Pdiss 270 mW. Package dimensions are 1.4 mm x 1.2 mm x 0.7 mm.

Feature Summary

• Single supply enhancement mode technology optimized for 3V operation without negative gate bias
• Super low noise figure performance across wide frequency bands
• High linearity combined with low power consumption
• Thin miniature leadless package design

Applications

• Low Noise Amplifier for Cellular/PCS/WCDMA handsets and modem cards
• Fixed wireless infrastructure in 2.4, 3.5 GHz and UNII frequency bands
• Wireless LAN PC-cards supporting 2.4 GHz 802.11b, 5 GHz 802.11a and HIPERLAN/2

Procurement Notes

Verify the component matches the exact ATF-551M4-TR1 designation. Confirm the datasheet corresponds to Broadcom Limited or Avago Technologies specifications. Ensure the package type is MiniPak 1.4x1.2mm. Check for any specific handling requirements regarding electrostatic discharge during installation.

Selection Notes

Select this device for ultra-low noise applications requiring single-supply operation. The enhancement mode feature simplifies biasing circuits by eliminating the need for negative gate voltage supplies. Consider the trade-off between noise figure and linearity when designing matching networks for specific frequency bands within the 450 MHz to 10 GHz range.

Part Context

This component belongs to the ATF-551 series of pseudomorphic HEMTs. It is designed as a discrete transistor for integration into RF front-end modules. The 'M4' suffix indicates the specific pinout and package configuration. The '-TR1' suffix denotes tape-and-reel packaging for automated assembly processes.

Replacement Considerations

Public confirmed substitute part numbers are not available in the provided documentation. Designers should consult official manufacturer resources for cross-reference information or equivalent devices with similar electrical characteristics and package dimensions.