HMC498LC4_09 Datasheet, PDF (5/6 Pages) Hittite Microwave Corporation – GaAs PHEMT MEDIUM POWER AMPLIFIER, 17 - 24 GHz

v02.1208
HMC498LC4
GaAs PHEMT MEDIUM
POWER AMPLIFIER, 17 - 24 GHz
11
Pin Descriptions
Pin Number
1, 5 - 8, 10 - 14,
18, 20, 22, 24
Function
N/C
2, 4, 15, 17
GND
3
RFIN
9
Vgg
16
RFOUT
Description
No connection required. These pins may be connected to
RF/DC ground without affecting performance.
Package bottom has an exposed metal paddle that must
also be connected to RF/DC ground.
This pin is AC coupled
and matched to 50 Ohms.
Gate control for amplifier. Adjust to achieve Id of 250 mA.
Please follow “MMIC Amplifier Biasing Procedure”
Application Note. External bypass capacitors of 100 pF,
1000 pF and 2.2 μF are required.
This pin is AC coupled
and matched to 50 Ohms.
23, 21, 19
Vdd1, Vdd2, Vdd3
Power Supply Voltage for the amplifier. External bypass
capacitors of 100 pF, 1000pF, and 2.2 μF are required.
Interface Schematic
11 - 286
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