MHW607-3 MOTOROLA [Motorola, Inc], MHW607-3 Datasheet - Page 4

• Manufacturer Part Number: MHW607-3
• Description: The RF Line VHF Power Amplifiers
• Manufacturer: MOTOROLA [Motorola, Inc]

NOMINAL OPERATION
conditions of V s1 = V s2 = V s3 = 7.5 Vdc (Pins 2, 4, 5) and P out
equal to 7.0 watts. With these conditions, maximum current
density on any device is 1.5 x 10 5 A/cm 2 and maximum die
temperature with 100 C case operating temperature is
165 C. While the modules are designed to have excess gain
margin with ruggedness, operation of these units outside the
limits of published specifications is not recommended unless
prior communications regarding intended use have been
made with the factory representative.
GAIN CONTROL
ferred method of power output control is to fix V s1 = V s2 = V s3
= 7.5 Vdc (Pins 2, 4, 5), P in (Pin 1) at 1.0 mW, and vary V Cont
(Pin 3) voltage.
MHW607–1 MHW607–2 MHW607–3 MHW607–4
4
All electrical specifications are based on the nominal
The module output should be limited to 7.0 watts. The pre-
APPLICATIONS INFORMATION
DECOUPLING
size limitation, external decoupling networks require careful
consideration. Pins 2, 3, 4 and 5 are internally bypassed with
a 0.018 F chip capacitor which is effective for frequencies
from 5.0 MHz through 174 MHz. For bypassing frequencies
below 5.0 MHz, networks equivalent to that shown in Figure
1 are recommended. Inadequate decoupling will result in
spurious outputs at certain operating frequencies and certain
phase angles of input and output VSWR.
LOAD MISMATCH
fixture having the identical decoupling networks described in
Figure 1. Electrical conditions are V s1 = V s2 = V s3 equal to
9.0 Vdc, VSWR equal to 20:1, and output power equal to 8.0
watts.
Due to the high gain of the three stages and the module
During final test, each module is load mismatch tested in a
MOTOROLA RF DEVICE DATA