MHW804-1 Motorola, MHW804-1 Datasheet - Page 4

• Manufacturer Part Number: MHW804-1
• Description: 4.0 WATTS 800 to 940 MHz RF POWER AMPLIFIERS
• Manufacturer: Motorola

NOMINAL OPERATION
ditions of V s1 = V s2 = V s3 = V s4 = V s5 = 7.5 Vdc (Pins 2, 3, 4,
5, 6) and P out equal to 4.0 watts. With these conditions, maxi-
mum current density on any device is 1.5 x 10 5 A/cm 2 and
maximum die temperature with 100 C case operating tem-
perature 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 rec-
ommended 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
= V s4 = V s5 = 7.5 Vdc (Pins 2, 3, 4, 5, 6), P in (Pin 1) at 1.0
mW, and vary V cont (Pin 1) voltage.
MHW804–1 MHW804–2
4
All electrical specifications are based on the nominal con-
The module output should be limited to 4.0 watts. The pre-
APPLICATIONS INFORMATION
DECOUPLING
size limitation, external decoupling networks require careful
consideration. Pins 2, 3, 4, and 6 are internally bypassed
with a 0.018 F chip capacitor which is effective for frequen-
cies from 5.0 MHz through 925 MHz. For bypassing frequen-
cies below 5.0 MHz, networks equivalent to that shown in
Figure 1 are recommended. Inadequate decoupling will re-
sult 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 = V s4
= V s5 equal to 9.0 V, VSWR equal to 20:1, and output
power equal to 6.0 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