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參數(shù)資料
| 型號： | ACPM-7813-TR1 |
| 英文描述： | CDMA/AMPS Power Amplifier Module |
| 中文描述： | 碼分多址/ AMPS二元功率放大器模塊 |
| 文件頁數(shù)： | 12/21頁 |
| 文件大?。?/td> | 183K |
| 代理商： | ACPM-7813-TR1 |
12
2. Step Bias Control and Dynamic
Bias Control (if controled PDM1)
The PDM1 output from the
baseband IC can be used to
create a software-programmable
voltage, to be used at the phone
designer’s discretion. To get high
efficiency and better ACPR, the
phone designers can change
control voltage of the PA by
adjusting PDM1 voltage accord-
ing to output power of PA. A
caution when using this
Power Mode
PA_ON
Vcntl
Power Range
Shut Down
LOW
0V
—
Low Power
HIGH
1.2V
~-5 dBm
Mid Power
HIGH
1.6V
-5 dBm ~ 13 dBm
High Power
HIGH
2.5V
13 dBm ~ 28.5 dBm
To Duplexer
Battery
Vdd1
Vdd2
Vcntl
PA
TxIC
Switch Circuit for PA
Baseband
IC
C1
R1
PA_ON
PDM1
Vbias
Enable
approach—careful consideration
must be made to to avoid an
abrupt discontinuity in the
output signal when the step bias
control voltage is applied.
The figure below is an example of
how to control the PA for
multiple bias points using the
PA_ON and Vcntl pin.
If PDM1 can be controlled then same circuit can be used for Dynamic bias control.
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| ACPM-7821 | 制造商:AVAGO 制造商全稱:AVAGO TECHNOLOGIES LIMITED 功能描述:4 x 4 Power Amplifier Module for J-CDMA (898 - 925 MHz) |
| ACPM-7821-BLK | 制造商:AVAGO 制造商全稱:AVAGO TECHNOLOGIES LIMITED 功能描述:4 x 4 Power Amplifier Module for J-CDMA (898 - 925 MHz) |
| ACPM-7821-TR1 | 制造商:AVAGO 制造商全稱:AVAGO TECHNOLOGIES LIMITED 功能描述:4 x 4 Power Amplifier Module for J-CDMA (898 - 925 MHz) |
| ACPM-7822 | 制造商:AVAGO 制造商全稱:AVAGO TECHNOLOGIES LIMITED 功能描述:JCDMA 4x4 Power Amplifier Module (898-925MHz) |
| ACPM-7822-BLK | 制造商:AVAGO 制造商全稱:AVAGO TECHNOLOGIES LIMITED 功能描述:JCDMA 4x4 Power Amplifier Module (898-925MHz) |
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