acpm-7813 Avago Technologies, acpm-7813 Datasheet - Page 10

• Manufacturer Part Number: acpm-7813
• Description: Cdma/amps Power Amplifier Module
• Manufacturer: Avago Technologies

Combinations of these channels will increase the peak
to average power ratio for higher data rates. The
complementary cumulative distribution function
(CCDF) measurement characterizes the peak to average
power statistics of CDMA2000 reverse link. For
reference, the system specifications of peak to average
power ratio of IS-95 and CDMA2000 IX RTT are 3.9 dB
and 5.4 dB at 1% CCDF respectively.
Test result of ACPM-7813 using CDMA2000 1X RTT signal
Test condition - PA Evaluation board with Vdd1=Vdd2=Vbias = 3.4V, Vcntl = 2.5V, Frequency = 836 MHz. Test
result with each channel configuration.
Channel
Basic
Voice+Data
Voice+Cntl
Cntl only
EIA/TIA-98-D indicates a 2.5 dB allowed back off in power for control channel only configuration.
Peak to average power ration (Pout = 16 dBm)
CCDF(%)
10
1
0.1
0.01
0.001
0.0001
10
IVdd(mA)
481.0
470.0
481.0
327.0
Basic
1.85
3.25
4.06
4.49
4.68
4.76
Pin(dBm)
0.20
0.52
0.68
-2.40
Voice + Data
3.07
4.28
5.06
5.55
5.87
5.92
-885 kHz
ACPR(dBc)
-56.5
-46.8
-44.9
-53.2
3.10
4.66
5.55
5.97
6.20
6.39
Voice + CNTL
+885 kHz
ACPR(dBc)
-56
-47.2
-45.0
-52.9
Higher peak to average power ratio requires a higher
margin, both in higher power gain and in improved
thermal stability for PA linearity to meet the minimum
system specifications.
The test results below for the ACPM-7813 show the
compliance to the system linearity specifications with
4 channel configurations, representing a broad
cross-section of CDMA2000 1X RTT environments.
CNTL only
3.76
5.29
6.17
6.58
6.76
6.82
-1.98 MHz
ACPR(dBc)
-68.1
-62.2
-61.8
-66.9
+1.98 MHz
ACPR(dBc)
-68.1
-62.1
-61.8
-67.5
Pout(dBm)
28
28
28
25.5