QPB8858SR

RF Amplifiers Overview

The QPB8858SR is a GaAs pHEMT/MESFET push-pull RF amplifier IC designed for CATV applications. It operates within a frequency range of 47 MHz to 1.218 GHz and provides over 34 dB of flat small-signal gain with a noise figure of 4 dB. The device features a P1dB compression point of 28 dBm and an OIP3 of 48 dBm at the test frequency of 1.218 GHz. It requires a 24 V supply voltage and draws 290 mA of operating current. Packaged in a QFN-40 (5x7 mm) surface-mount case, it supports an operating temperature range from -40°C to +100°C.

RF Amplifiers Feature Summary

• Integrates a push-pull architecture utilizing GaAs pHEMT/MESFET technology for high linearity and efficiency.
• Provides flat gain response across the specified broadband frequency range suitable for cable distribution networks.
• Features low noise characteristics to maintain signal integrity in amplification stages.
• Designed for robust operation in demanding thermal environments with extended temperature ratings.

RF Amplifiers Applications

• Cable Television (CATV) signal amplification
• Broadband RF signal conditioning
• Headend and trunk line amplification systems

RF Amplifiers Procurement Notes

Verify the specific suffix SR against official Qorvo documentation to confirm reel packaging and moisture sensitivity level requirements. Ensure compatibility with the required 24 V supply rail and thermal management solutions for the QFN-40 package. Confirm that the 47 MHz to 1.218 GHz operational bandwidth aligns with the target system specifications before finalizing procurement orders.

RF Amplifiers Selection Notes

Select this component when a single-channel, high-gain amplifier is required for 75-ohm CATV infrastructure. Compare against the QPB8857 series if lower gain or different power consumption is acceptable. Verify that the QFN-40 footprint fits the PCB layout constraints. Consider the 290 mA current draw for power budget calculations and ensure adequate heat dissipation for the +100°C maximum junction temperature rating.

RF Amplifiers Part Context

The QPB8858SR belongs to the QPB8858 family of RF amplifiers manufactured by Qorvo. It is part of a broader portfolio of GaAs-based components designed for wireless and cable communications. This specific model serves as a key building block for downstream signal processing in hybrid fiber-coaxial networks, complementing other filters and switches in the Qorvo ecosystem.

RF Amplifiers Replacement Considerations

The QPB8858TR13 is a verified alternative variant within the same family, offering identical electrical performance but differing in tape-and-reel packaging quantity. Both devices share the same core functionality and pinout configuration.

RF Amplifiers FAQ

What is the input return loss specification for the QPB8858SR?

The input return loss is specified at 18 dB.

Does the QPB8858SR support humidity-sensitive device handling?

Yes, the component is classified as humidity sensitive and requires appropriate storage and handling procedures.