DC-2.5 GHz InGaP HBT
Matched Gain Block Amplifier
September 2006 - Rev 01-Sep-06
CGB7289-SC
Application Circuit - Passive Bias,V Supply = 8V
Note: This schematic represents the topology of the application circuit recommended by Mimix.
Recommended Bias Resistor Values for ID = 120 mA
Supply Voltage (V)
Rbias (R1 Description: 1206 1/4W 1%) 18
Rbias (R1 Description: 1210 1/2W 1%)
7V
8V
27
9V 10V 12V
—
—
43
—
62
—
—
36
Note: Rbias provides DC bias stability over temperature.
Application Schematic
R2
R1
Vs
C3
C4
C5
L2
L1
R3
4
2
TL 1
RF OUT
TL2
RF IN
1
3
C2
C1
C6
Output
Match
C7 Input
Match
Ref
850 MHz
1950 MHz 2140 MHz Description /
Passive Bias Evaluation Board Layout
Designator Value
Value
1000 pf
DNP
Value
1000 pf
DNP
Size
C1, C2
C3
1000 pf
DNP
PHYC 0805 NPO
—
—
C4
DNP
DNP
DNP
0805 X7R
PHYC 0603 NPO
C5
C6
C7
L1
L2
R1
R2
R3
1
F
1
F
1 F
DNP
5.6 fH
33 nH
33 nH
27
1.2 pF
DNP
22 nH
22 nH
27
0.5 pF
DNP
22 nH
22 nH
27
PHYC 0805 NPO 5%
Coilcraft 0603 10%
Coilcraft 0603 10%
KOA 2010 5% 3/4W
KOA 0805 1% 1/8W
KOA 0805 1% 1/8W
391
182
391
182
391
182
EL1
EL2
13 deg
N/A
N/A
45 deg
N/A
49 deg
MIMIX
Page 18 of 20
Mimix Broadband, Inc., 10795 Rockley Rd., Houston,Texas 77099
Tel: 281.988.4600 Fax: 281.988.4615 mimixbroadband.com
Characteristic Data and Specifications are subject to change without notice. ©2006 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.
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