HMC549MS8GE Obsolete 40–960MHz Dual-Output LNA | Stock & RFQ
Manufacturer: Analog Devices / Hittite Microwave
Product Type: Dual-Output GaAs pHEMT MMIC LNA
Frequency Range: 40MHz to 960MHz
Gain: 25dB Typical
Noise Figure: 3.5dB Typical
Output IP3: +27dBm Typical
Supply Voltage: +5V
Supply Current: 120mA Typical
Package/Case: 8-Lead MSOP with Exposed Pad
Lifecycle Status: Obsolete
Description: 40–960MHz dual-output low noise amplifier for CATV, DTV and multi-tuner receiver applications
The HMC549MS8GE is a high-dynamic-range broadband LNA covering 0.04GHz to 0.96GHz.
Unlike a conventional single-output LNA, the device provides two well-balanced RF outputs. This allows it to operate either as:
A balanced-output amplifier driving a differential tuner
An active splitter driving two single-ended tuners
The input is designed for 75Ω systems, making the device particularly suitable for CATV and television receiver architectures.
Key Specifications
| Parameter | HMC549MS8GE |
| Frequency Range | 40–960MHz |
| Technology | GaAs pHEMT MMIC |
| Typical Gain | 25dB |
| Noise Figure | 3.5dB |
| Output P1dB | 12.5dBm |
| Output IP3 | +27dBm |
| Output IP2 | +52dBm |
| Amplitude Balance | 0.3dB Typical |
| Phase Balance | 2° Typical |
| Supply Voltage | +5V |
| Supply Current | 120mA |
| Input Impedance | 75Ω |
| Package | 8-Lead MSOP with EP |
| Lifecycle | Obsolete |
Typical Applications
The HMC549MS8GE was primarily designed for:
Digital TV receivers
CATV receiver systems
Multi-tuner set-top boxes
Personal video recorders
Home gateways
Broadband receiver front ends
Legacy television equipment
Its dual-output architecture is especially useful where one RF input must feed multiple tuner paths.
HMC549MS8GE Replacement
Analog Devices lists HMC374G as a suggested replacement for the HMC549 family.
However, replacement should not be treated as automatic. Designers should compare:
Frequency range
Gain
Noise figure
Number of RF outputs
Input impedance
Output matching
Supply voltage/current
Package and PCB footprint
For existing hardware, the replacement device should be validated at the schematic and RF layout level.
FAQ
Is HMC549MS8GE obsolete?
Yes. Analog Devices currently lists HMC549MS8GE as Obsolete.
What frequency range does HMC549MS8GE cover?
It operates from 40MHz to 960MHz.
What is the gain of HMC549MS8GE?
Typical gain is approximately 25dB.
What is the noise figure?
The typical noise figure is 3.5dB.
What is the output IP3?
The device provides approximately +27dBm output IP3.
What is special about HMC549MS8GE?
It provides dual balanced RF outputs, allowing it to drive a differential tuner or operate as an active splitter for two single-ended tuners.
What package does HMC549MS8GE use?
It uses an 8-lead MSOP package with an exposed ground paddle.
What is the suggested replacement for HMC549MS8GE?
Analog Devices lists HMC374G as a suggested replacement, but electrical and PCB compatibility should be verified before substitution.
