3.3-3.6 GHz InGaP HBT
8W Linear Power Amplifier
February 2008 - Rev 29-Feb-08
CHV2721-QJ
App Note [1] Biasing
- The CHV2720-QJ requires power supply sequencing. Vcc should be applied first and then Vcontrol. Quiescent
current (Icq) can be varied by adjusting Vcontrol in order to obtain the optimum performance desired. RF power is applied after both Vcc
and Vcontrol are present. When turning off the device Vcontrol is switched off first and then Vcc. Vcontrol can be used to turn off the current.
Pin Assignment:
Functional Block Diagram:
Vcontrol
Active
Bias
Pin #
Description
Vcontrol
RF IN
RF OUT 4
RF OUT 3
RF OUT 2
RF OUT 1
N/C
RFout
RFout
1
4
14
15
16
17
2, 3, 5, 6, 7, 8, 9, 10, 11, 12
13, 18, 19, 20, 21, 22, 23, 24
RFin
Input Match
Output
Match
RFout
RFout
Mimix Broadband, Inc., 10795 Rockley Rd., Houston, Texas 77099
Tel: 281.988.4600 Fax: 281.988.4615 mimixbroadband.com
Page 5 of 6
Characteristic Data and Specifications are subject to change without notice.
©2008
Mimix Broadband, Inc.
Export of this item may require appropriate export licensing from the U.S. Government. In purchasing these parts, U.S. Domestic customers accept
their obligation to be compliant with U.S. Export Laws.
MIMIX [ MIMIX BROADBAND ]
