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Gain Block Specification Selection Guide
Frequency Range
(f3dB, gain at frequency, BW)

 HMMC-5003
  kHz -3 GHz
 HMMC-5004
  kHz - 4 GHz
 HMMC-5200
  DC-20 GHz
 HMMC-5220
  DC-15 GHz
 HPMX-3002
  150-960 MHz
 INA-01xxx
  kHz -3 GHz
 INA-02xxx
  kHz -3 GHz
 INA-03xxx
  kHz -3 GHz
 INA-10xxx
  kHz - 4 GHz
 INA-12xxx
  kHz - 1.5 GHz
 INA-30xxx
  kHz - 1.5 GHz
 INA-31xxx
  kHz -3 GHz
 INA-32xxx
  kHz - 4 GHz
 INA-34xxx
  kHz -3 GHz
 INA-50xxx
  kHz - 1.8 GHz
 INA-51xxx
  kHz - 2.5 GHz
 INA-52xxx
  kHz - 5 GHz
 INA-54xxx
  kHz - 5 GHz
 IVA-05xxx
  kHz - 2 GHz
 IVA-14xxx
  kHz - 3 GHz
 MGA-641xx
  1.2-10 GHz
 MGA-725xx
  .1 - 6 GHz
 MGA-815xx
  .5 - 6 GHz
 MGA-825xx
  .5 - 6 GHz
 MGA-835xx
  .5 - 6 GHz
 MGA-855xx
  .5 - 8 GHz
 MGA-865xx
  .8 - 8 GHz
 MGA-875xx
  .5 - 5 GHz
 MSA-01xx
  kHz - 4 GHz
 MSA-02xx
  kHz - 4 GHz
 MSA-03xx
  kHz - 4 GHz
 MSA-04xx
  kHz - 4 GHz
 MSA-05xx
  .05 - 2 GHz
 MSA-06xx
  kHz - 4 GHz
 MSA-07xx
  kHz - 4 GHz
 MSA-08xx
  kHz - 6 GHz
 MSA-09xx
  .1 - 6 GHz
 MSA-11xx
  .02 - 2.5 GHz
 MSA-20xx
  kHz - 5 GHz
 MSA-21xx
  kHz - 3 GHz
 MSA-31xx
  kHz - 5 GHz
 MSA-99xx
  kHz - 6 GHz
    0.1         0.2               0.5           1.0           2.0               5.0           10              
  Frequency [GHz]  

What:
The portion of the radio spectrum over which the transistor has useful performance (as an amplifier). A common definition of "useful" is greater than 6 dB of gain.

Amplifier performance varies with frequency. Many gainblocks (INAs, most MSAs) have a gain vs. frequency characteristic that exhibits constant (or small signal) gain from very low frequencies up to some corner frequency and then begins to "roll off" or decrease. f3dB is the frequency at which the gain has decreased 3 dB from the small signal gain level.

Amplifiers with minimal feedback (MSA-08, 99) will lack the "flat gain" region. For these products it is more useful to quote gain performance at specific frequencies.

GaAs based amplifiers (MGAs) typically have a low frequency roll-off as well as a high frequency roll-off. In this case the useful frequency range is quoted as a bandwidth (BW). Certain MSAs (MSA-05,09,10,11) use DC blocked feedback resistors and have a low frequency corner around 50 MHz below which match deteriorates and gain increases. Tuned amplifiers (HPMX-3002) will also typically be quoted as operating over a specific bandwidth.

Direction:
needs to be sufficient to meet application, but not excessive. Too much gain can result in distortion from early saturation.

Range:
kHz to 10 GHz (RF/uw)
kHz to 50 GHz (mmw)

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this page last updated: 1 October 1999