HMC478MP86 Datasheet, PDF (5/6 Pages) Hittite Microwave Corporation – SiGe HBT GAIN BLOCK MMIC AMPLIFIER, DC - 4.0 GHz

8
Pin Descriptions
Pin Number
Function
1
RFIN
v00.1004
HMC478MP86
SiGe HBT GAIN BLOCK
MMIC AMPLIFIER, DC - 4.0 GHz
Description
This pin is DC coupled.
An off chip DC blocking capacitor is required.
Interface Schematic
3
RFOUT
2, 4
GND
RF output and DC Bias (Vcc) for the output stage.
These pins 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= 62 mA, Rbias= (Vs - Vcc) / Icc
Supply Voltage (Vs)
RBIAS VALUE
RBIAS POWER RATING
5V
18 Ω
1/8 W
6V
35 Ω
1/4 W
8V
67 Ω
1/2 W
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
18 nH
18 nH
100 pF
100 pF
2400
15 nH
100 pF
3500
8.2 nH
100 pF
8 - 370
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