HMC741ST89ETR

Overview

The HMC741ST89ETR is an InGaP HBT active bias MMIC amplifier manufactured by Analog Devices Inc. (formerly Hittite). It operates within a frequency range of 50MHz to 3GHz and is housed in a surface-mount SOT-89 package. Key electrical specifications include a gain of 19dB, a noise figure of 2.5dB, and a P1dB output power of 16dBm. The device requires a 5V supply voltage and draws 96mA of current. This component is currently classified as obsolete.

Feature Summary

• Utilizes InGaP HBT technology for active bias MMIC amplification
• Designed for wideband operation from 50MHz to 3GHz
• Features low noise figure performance suitable for signal chain applications

Applications

• GPS receiver front-end stages
• General purpose RF amplification
• IF amplifier circuits

Procurement Notes

Verify the obsolete status of this component before procurement planning. Confirm availability through authorized distributors or surplus channels. Ensure that any replacement strategy accounts for the discontinuation notice dated August 9, 2024. Validate pinout compatibility if substituting with newer models.

Selection Notes

Select this part for applications requiring moderate gain and low noise in the UHF to L-band spectrum. Consider the SOT-89 footprint constraints during PCB layout. Evaluate thermal management requirements given the 96mA supply current. Compare against the ADL5602ARKZ-R7 for potential modern alternatives.

Part Context

This component belongs to the HMC741 family of InGaP HBT MMIC amplifiers. It is functionally similar to the HMC740 but offers higher gain and lower noise figures. Both parts share the same SOT-89 package and operational frequency range, differing primarily in their specific gain and noise performance characteristics.

Replacement Considerations

The ADL5602ARKZ-R7 is listed as a verified substitute for the HMC741ST89ETR. Verify functional equivalence regarding gain, noise, and power specifications before implementation.