Key Selection Information
| Selection Parameter | Confirmed Information |
|---|---|
| Function | GaAs InGaP HBT gain-block MMIC |
| Frequency range | DC to 8 GHz |
| Gain | 15 dB |
| Output P1dB | +15 dBm |
| Output IP3 | +30 dBm |
| RF interface | Cascadable 50 Ω I/O |
| Supply | +5 V, 54 mA |
| Package | SC70 |
Product Overview
The HMC311SC70ETR is the tape-and-reel SC70 implementation of Analog Devices’ HMC311SC70 gain-block MMIC. It provides approximately 15 dB gain from DC to 8 GHz using a GaAs InGaP HBT Darlington topology and can serve as a compact 50 Ω cascaded gain stage or as an LO driver.
Its main selection advantage is bandwidth in a very small package. The device offers +15 dBm output P1dB and +30 dBm output IP3 while drawing 54 mA from a +5 V supply, making it appropriate when moderate gain is needed across a much wider frequency span than typical SOT-89 gain blocks.
Technical Specifications
| Parameter | Confirmed Information |
|---|---|
| Technology | GaAs InGaP HBT |
| Frequency range | DC to 8 GHz |
| Gain | 15 dB |
| Output P1dB | +15 dBm |
| Output IP3 | +30 dBm |
| I/O impedance | Cascadable 50 Ω |
| Supply voltage | +5 V |
| Supply current | 54 mA |
| Package | SC70 |
| Order form | Tape and reel |
Design Considerations
The wide DC-to-8-GHz operating claim does not mean gain, match and linearity are constant across the full range. Use the S-parameter and large-signal curves at the intended band, especially for multi-gigahertz LO-drive applications.
The SC70 package reduces board area but also limits heat-spreading area compared with SOT-89. Maintain the recommended grounding and board layout so bias stability and thermal behavior remain consistent.
Related Engineering Resources
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