HMC481ST89 Datasheet, PDF (5/6 Pages) Hittite Microwave Corporation – SiGe HBT GAIN BLOCK MMIC AMPLIFIER, DC - 5.0 GHz

v00.0204
MICROWAVE CORPORATION
HMC481ST89
SiGe HBT GAIN BLOCK
MMIC AMPLIFIER, DC - 5.0 GHz
8
Pin Descriptions
Pin Number
Function
1
RFIN
Description
This pin is DC coupled.
An off chip DC blocking capacitor is required.
Interface Schematic
3
RFOUT
RF output and DC Bias (Vcc) for the output stage.
2, 4
GND
These pins and package bottom must be connected to
RF/DC ground.
Application Circuit
Note:
1. External blocking capacitors are required on
RFIN and RFOUT.
2. RBIAS provides DC bias stability over temperature.
Recommended Bias Resistor Values
for Icc= 79 mA, Rbias= (Vs - Vcc) / Icc
Supply Voltage (Vs)
RBIAS VALUE
RBIAS POWER RATING
6V
11 Ω
1/8 W
8V
39 Ω
1/4 W
10V
62 Ω
1/2 W
12V
91 Ω
1W
Recommended Component Values for Key Application Frequencies
Component
L1
C1, C2
50
270 nH
0.01 µF
900
56 nH
100 pF
Frequency (MHz)
1900
2200
2400
18 nH
18 nH
15 nH
100 pF
100 pF
100 pF
3500
8.2 nH
100 pF
5000
6.8 nH
100 pF
8 - 290
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