MITSUBISHI RF MOSFET MODULE
ELECTROSTATIC SENSITIVE DEVICE
OBSERVE HANDLING PRECAUTIONS
RA20H8994M
896-902/ 935-941MHz 20W 12.5V, 3 Stage Amp. For MOBILE RADIO
DESCRIPTION
The RA20H8994M is a 20-watt RF MOSFET Amplifier
Module for 12.5-volt mobile radios that operate in the 896- to
941-MHz range.
The battery can be connected directly to the drain of the
enhancement-mode MOSFET transistors. Without the gate
voltage (VGG=0V), only a small leakage current flows into the
drain and the RF input signal attenuates up to 60 dB. The output
power and drain current increase as the gate voltage increases.
With a gate voltage around 4V (minimum), output power and
drain current increases substantially. The nominal output power
becomes available at 4.5V (typical) and 5V (maximum). At
VGG=5V, the typical gate current is 1 mA.
This module is designed for non-linear FM modulation, but may
also be used for linear modulation by setting the drain quiescent
current with the gate voltage and controlling the output power with
the input power.
BLOCK DIAGRAM
2
3
1
4
5
2
Gate Voltage (VGG), Power Control
3
Drain Voltage (VDD), Battery
RF Output (Pout)
5
• Pout>20W, ηT>25% @ VDD=12.5V, VGG=5V, Pin=50mW
• Broadband Frequency Range: 896-902/ 935-941MHz
• Low-Power Control Current IGG=1mA (typ) at VGG=5V
• Module Size: 66 x 21 x 9.88 mm
• Linear operation is possible by setting the quiescent drain
current with the gate voltage and controlling the output power
with the input power
RF Input (Pin)
4
FEATURES
• Enhancement-Mode MOSFET Transistors
(IDD≅0 @ VDD=12.5V, VGG=0V)
1
RF Ground (Case)
PACKAGE CODE: H2S
ORDERING INFORMATION:
ORDER NUMBER
SUPPLY FORM
RA20H8994M-01
Antistatic tray,
10 modules/tray
RA20H8994M
MITSUBISHI ELECTRIC
1/9
5 April 2004
