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CHA2391 Datasheet(PDF) 7 Page - United Monolithic Semiconductors |
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CHA2391 Datasheet(HTML) 7 Page - United Monolithic Semiconductors |
7 / 8 page 36-40GHz Very Low Noise Amplifier CHA2391 Ref. : DSCHA23912240 -28-Aug.-02 7/8 Specifications subject to change without notice Route Départementale 128 , B.P.46 - 91401 ORSAY Cedex - FRANCE Tel.: +33 (0)1 69 33 03 08 - Fax : +33 (0)1 69 33 03 09 Chip Biasing This chip is a two stage amplifier, and flexibility is provided by the access to number of pads. The internal DC electrical schematic is given in order to use these pads in a safe way. IN OUT Vg 1 Vg 2 25 50 Vd Vds1 Vds2 Not exceed Vds = 3.5Volt ( internal Drain to Source voltage ). We propose two standard biasing: Low Noise and low consumption: Vd = 3.5V and Id = 30mA. Low Noise and high output power: Vd = 4.0V and Id = 45mA. ( A separate access to the gate voltages of the first and the output stage is provided. Nominal bias is obtained for a typical current of 30mA for the output stage and 15 mA for the first stage. The first step to bias the amplifier is to tune the Vg1 = -1V and Vg2 to drive 30mA for the full amplifier. Then Vg1 is reduced to obtain 45 mA of current through the amplifier. |
Similar Part No. - CHA2391_15 |
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Similar Description - CHA2391_15 |
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