cha2193 United Monolithic Semiconductors, cha2193 Datasheet - Page 7

• Manufacturer Part Number: cha2193
• Description: 20-30ghz Low Noise Amplifier
• Manufacturer: United Monolithic Semiconductors

20-30GHz Low Noise Amplifier
Typical Bias Tuning for Low Noise Operation
For low noise operation, a separate access to the gate voltages of the first stage ( Vgs1 ), and of the
second and third stages ( Vgs2 ) is provided.
Nominal bias for l o w noise operation is obtained for a typical current of 20 mA for the second and third
stages and 10 mA for the first stage ( 50 mA for the amplifier ).
The first step to bias the amplifier is to tune the Vgs1 = -1V, and Vgs2 to drive 40 mA for the full amplifier.
Then Vgs1 is reduced to obtain 50 mA of current through the amplifier.
A fine tuning of the noise figure may be obtained by modifying the Vgs1 bias voltage, but keeping the
previous value for Vgs2.
Ref. : DSCHA21939042
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Route Départementale 128 , B.P.46 - 91401 ORSAY Cedex - FRANCE
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Tel.: [phone] - Fax : [phone]
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Gain
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(dB)
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Specifications subject to change without notice
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(dBm)
Pout
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Input power (dBm)
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CHA2193
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