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부품번호 | WS1403 기능 |
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기능 | CDMA PCS 3x3 Power Amplifier Module | ||
제조업체 | AVAGO | ||
로고 | |||
전체 15 페이지수
WS1403
CDMA PCS 3x3 Power Amplifier Module
(1850-1910 MHz)
Data Sheet
Description
The WS1403 is a CDMA Personal Communication Service
(PCS) Power Amplifier (PA), designed for handsets
operating in the 1850~1910 MHz bandwidth.
Digital mode control of CoolPAM reduces current
consumption, which enables extended talk time of
mobile devices.
The WS1403 meets stringent CDMA linearity
requirements to and beyond 28 dBm output power. The
3 mm x 3 mm form factor 8-pin surface mount package
is self contained, incorporating 50 ohm input and output
matching networks.
Features
• Excellent linearity
• Low quiescent current
• High efficiency
PAE at 28 dBm: 39.8%
PAE at 17 dBm: 22.3%
• 8-pin surface mounting package
3 mm x 3 mm x 1.0 mm
• Internal 50 ohm matching networks for both RF input
and output
• RoHS compliant
Applications
• Digital CDMA PCS
• Wireless Local loop
Order Information
Functional Block Diagram
Part Number
WS1403-TR1
WS1403-BLK
No. of Devices
1,000
100
Container
7”Tape and Reel
BULK
Vref (1)
Vcont (2)
RF
INPUT
(3)
MMIC
BIAS CIRCUIT & CONTROL LOGIC
INPUT
MATCH
DA
INTER
STAGE
MATCH
PA
Vcc1 (4)
Vcc2 (5)
OUTPUT
MATCH
MODULE
RF
OUTPUT
(6)
Free Datasheet http://www.datasheet4u.com/
Characteristics Data (Vcc = 3.4 V, Vref = 2.85 V, T = 25°C, Zin/Zout = 50 ohm)
500
450
400 1850 MHz
35
30
350 1880 MHz
300 1910 MHz
250
25
200 20
150 1850 MHz
100 15 1880 MHz
50 1910 MHz
0
0 5 10 15 20 25 30
Pout (dBm)
10
0 5 10 15 20 25 30
Pout (dBm)
Figure 1. Total current vs. output power
Figure 2. Gain vs. output power
45
40
35
30
25
20
15
10
5
0
0 5 10 15 20
Pout (dBm)
Figure 3. Power added efficiency vs. output power
1850 MHz
1880 MHz
1910 MHz
25 30
-40
-45
-50
-55
-60
-65 1850 MHz
-70 1880 MHz
1910 MHz
-75
0 5 10 15 20 25 30
Pout (dBm)
Figure 4. Adjacent channel power ratio 1 vs. output power
-50
-55
-60
-65
-70
-75 1850 MHz
-80 1880 MHz
1910 MHz
-85
0 5 10 15 20 25 30
Pout (dBm)
Figure 5. Adjacent channel power ratio 2 vs. output power
Free Datasheet http://www.datasheet4u.com/
4페이지 Peripheral Circuit in Handset
+2.85 V
MSM PA_ON
PA_RO
C8
C2 C1
RF In
TX
FILTER
C3
WS1403
Vref
Vcont
GND
GND
RF IN RF OUT
Vcc1
Vcc2
Output Matching Circuit
C6 RF Out
Duplexer
C7 L1
C4
C5
Figure 10. Peripheral circuit
VBATT
Notes:
• Recommended voltage for Vref is 2.85 V.
• Place C1 near to Vref pin.
• Place C3 and C4 close to pin 4 (Vcc1) and pin 5 (Vcc2). These capacitors can affect the RF performance.
• Use 50 W transmission line between PAM and Duplexer and make it as short as possible to reduce conduction loss.
• π-type circuit topology is good to use for matching circuit between PA and Duplexer.
Calibration
Calibration procedure is shown in Figure 11. Two
calibration tables, high mode and low mode respectively,
are required for Cool PAM, which is due to gain difference
in each mode. For continuous output power at the mode
change points, the input power should be adjusted
according to gain step during the mode change.
TX_AGC
Offset Value (Difference between Rising Point and Falling
Point)
Offset value, which is the difference between the rising
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.
GAIN
Low Mode
High Mode
Min. PWR Falling Rising
Pout
Max. PWR
Figure 11. Calibration procedure
Low Mode
High Mode
Falling
Rising
Pout
Figure 12. Setting of offset between rising and falling power
Free Datasheet http://www.datasheet4u.com/
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부품번호 | 상세설명 및 기능 | 제조사 |
WS1403 | CDMA PCS 3x3 Power Amplifier Module | AVAGO |
DataSheet.kr | 2020 | 연락처 | 링크모음 | 검색 | 사이트맵 |