17-24GHz Low Noise Amplifier

CHA2090

Ref. : DSCHA20909347 – 13 Dec. 99

7/8

Specifications subject to change without notice

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Chip Biasing options

This chip is self-biased, 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.

The two requirements are :

N°1 : Not exceed Vds = 3.5Volt

( internal Drain to Source voltage ).

N°2 : Not biased in such a way that Vgs becomes positive.

( internal Gate to Source voltage )

We propose two standard biasing :

Low Noise and low consumption :

Vd = 4.5V and B, D, E grounded.

All the other pads non connected ( NC ).

Idd = 55mA & Pout-1dB = 10dBm Typical.

( Equivalent to A,B,C,D,E F: non connected and Vd=4.5V ; G1=G2=G3=+1.V ).

Low Noise and higher output power

Vd = 4.5V and B, C, F grounded.

All the other pads non connected ( NC ).

Idd = 75mA & Pout-1dB = 12dBm Typical..