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參數(shù)資料
| 型號： | ACPM-7821-BLK |
| 元件分類： | 放大器 |
| 英文描述： | 898 MHz - 925 MHz RF/MICROWAVE NARROW BAND MEDIUM POWER AMPLIFIER |
| 封裝： | 4 X 4 MM, 1.10 MM HEIGHT, SMT PACKAGE-10 |
| 文件頁數(shù)： | 16/16頁 |
| 文件大?。?/td> | 452K |
| 代理商： | ACPM-7821-BLK |
9
Calibration
Calibration procedure is shown in Figure 11. Two
calibration tables, high mode and low mode respec-
tively, are required for CoolPAM, which is due to gain
difference in each mode.
For continuous output power at the mode change
points, the input power should be adjusted accord-
ing to gain step during the mode change.
Offset Value
(difference between rising point and falling point)
Offset value, which is the difference between the ris-
ing point (output power where PA mode changes from
low mode to high mode) and falling point (output
power where PA mode changes from high mode to
low mode), should be adopted to prevent system
oscillation. 3 to 5 dB is recommended for Hysteresis.
Average Current and Talk Time
Probability Distribution Function implies that what
is important for longer talk time is the efficiency of
low or medium power range rather than the efficiency
at full power. ACPM-7821 idle current is 14 mA and
operating current at 17 dBm is 68 mA at nominal
condition. This PA with low current consumption pro-
longs talk time by no less than 30 minutes compared
to other PAs.
Average current =
∫(PDF x Current)dp
Figure 11. Calibration procedure.
Figure 12. Setting of offset between rising and falling power.
Figure 13. CDMA Power Distribution Function.
Pout
Min PWR
Max PWR
High mode
TX AGC
Low mode
Rising
Falling
Rising
Falling
High Mode
Low Mode
Pout
Gain
0.00
0.50
1.00
1.50
2.00
2.50
3.00
3.50
4.00
4.50
5.00
-50
-40
-30
-20
-10
0
10
20
30
PA Out (dBm)
CDG Urban
CDG Suburban
Conv PAM
Digitally Controlled PA
Cool PAM
0
100
200
300
500
400
600
700
相關PDF資料 |
PDF描述 |
|---|---|
| ACPM-7822-BLK | 898 MHz - 925 MHz RF/MICROWAVE NARROW BAND LOW POWER AMPLIFIER |
| ACPM-7822-TR1 | 898 MHz - 925 MHz RF/MICROWAVE NARROW BAND LOW POWER AMPLIFIER |
| ACPM-7833-BLK | 1850 MHz - 1910 MHz RF/MICROWAVE NARROW BAND MEDIUM POWER AMPLIFIER |
| ACPM-7833-TR1 | 1850 MHz - 1910 MHz RF/MICROWAVE NARROW BAND MEDIUM POWER AMPLIFIER |
| ACPM-7833-BLK | 1850 MHz - 1910 MHz RF/MICROWAVE NARROW BAND MEDIUM POWER AMPLIFIER |
相關代理商/技術參數(shù) |
參數(shù)描述 |
|---|---|
| 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) |
| ACPM-7822-TR1 | 制造商:AVAGO 制造商全稱:AVAGO TECHNOLOGIES LIMITED 功能描述:JCDMA 4x4 Power Amplifier Module (898-925MHz) |
| ACPM-7831-BLK | 制造商:未知廠家 制造商全稱:未知廠家 功能描述:Amplifier. Other |
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