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mmw Amplifiers Specification Selection Guide
& Bias Range
(Vdd, Vd;   Id)

  -----------------------------------3 V-----------------------------------
  HMMC-5038 120 mA  
  -----------------------------------5 V-----------------------------------
  HMMC-5023   24 mA
  HMMC-5200 45 mA  
  HMMC-5220 45 mA  
  HMMC-5025 75 mA  
  HMMC-5620 100 mA  
  HMMC-5618 110 mA  
  HMMC-5032 4.5V 250 mA  
  HMMC-5034 4.5V, 300 mA  +
  HMMC-5040 4.5V, 300 mA  +
  HMMC-5033 680 mA  +
  -----------------------------------8 V-----------------------------------
  HMMC-5021 7V, 150 mA  
  HMMC-5022 7V, 150 mA  
  HMMC-5026 7V, 150 mA  
  HMMC-5027 250 mA  
    0             50               100               150               200               250  
  Bias Current [mA]  

Vd: The power supply voltage for best operation in volts.
Typically the Vd requirement is set by the power supply the designer has available and is not negotiable - though you can always choose a device with a Vd lower than the available supply voltage.

Id: The amount of bias current the device draws in mA.
For an IC the biasing circuit is internal so once a Vd is selected the Id is determined. More Id means less battery life for handheld equipment. It also means higher efficiency which translates into cooler operation and longer lifetime. Alternatively it usually means more output power capability and greater linearity (less distortion). An interesting figure of merit is dB/mA the amount of gain available for the current drawn.

Vd: needs to fit application
Id: Assuming performance is adequate less Id is better.

Vd: 3-8 V
Id: 24 - 680 mA

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this page last updated: 1 October 1999