mma-343737-q10 MicroWave Technology, Inc., mma-343737-q10 Datasheet - Page 6

• Manufacturer Part Number: mma-343737-q10
• Description: 3.4 ? 3.7 Ghz 4w Linear Power Amplifier Module
• Manufacturer: MicroWave Technology, Inc.

Application Note (continued)
The evaluation board schematic is shown in Figure 4. The bias conditioner circuit requires a 10uF capacitor on QFN
pin 4 to maintain DC stability. The bias input, Vdd1 at QFN pin 6 is used to supply power to the bias conditioner and
the bias input Vdd2 at QFN pin 8 is used to supply power for both the RF amplifier and power detector circuitry.
The bias conditioner circuit must be powered up before RF amplifier.
controls the DC bias current of the RF amplifier. Zero volts or no connection will pinch off the RF amplifier. Increasing
the voltage to Vpc will increase the idle current. The suggested idle current is 1.0A without RF. This setting will operate
the RF amplifier in a class A/B operation. Other settings can be used. The maximum current shall not exceed 1.3 A.
These conditions can vary depending upon the setting of Vdd2.
in Figure 5 is less than 8.0 dB and varies less than +/- 0.3 for different values of Vpc from 2.0 to 5.5 volts. The supply
current versus output power and P1dB versus frequency is shown Figures 6 and 7. The P1dB is 36 dBm at 80°C. The
Ids current is 1.6A at the P1dB. The two tone linearity is very stable across the frequency range as shown in Figure 8.
The power per tone is 25 dBm and frequency separation is 20 MHz. The IMD3 level is -47 dBc. A plot of average
power at EVM=2% versus different Vpc voltage values is shown in Figure 9. The Vpc shut down feature is available
upon request.
Please visit MwT website
MicroWave Technology, Inc. an IXYS Company, 4268 Solar Way, Fremont, CA 94538
Data contained herein is subject to change without notice. All rights reserved © 2007
510-651-6700
www.mwtinc.com
Page 6 of 12, Updated June 4, 2008
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3.4 – 3.7 GHz 4W Linear Power Amplifier Module
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Applying a DC voltage to Vpc, QFN pin 5,
MMA-343737-Q10
The output voltage at QFN pin 4,
Vneg is -2.0 volts. A maximum
of 1 mA is allowed to be pulled
from this signal. Smaller values
than 10uF may cause instability
to bias conditioner.
Two 10uF capacitors are used
for bypassing Vdd1 and Vdd2.
Power sequencing is required
when Vdd1 and Vdd2 are
separated. No sequencing is
required when Vdd1 and Vdd2
are connected to the same
power supply. The minimal
allowed voltage is 5.5 volts on
Vdd1 and Vdd2.
The amplifier’s noise figure shown
Advance Data Sheet
June 2007