WS2411-TR1 Avago Technologies US Inc., WS2411-TR1 Datasheet - Page 14

• Manufacturer Part Number: WS2411-TR1
• Description: MODULE PA UMTS1900 4X4MM 10-PIN
• Manufacturer: Avago Technologies US Inc.
• Type: Power Amplifierr

Specifications of WS2411-TR1

• Package / Case: 10-DFN
• Current - Supply: 500mA ~ 550mA
• Frequency: 1.85GHz ~ 1.91GHz
• Gain: 24dB ~ 27dB
• Rf Type: W-CDMA, HSPDA
• Voltage - Supply: 3.2V ~ 4.2V
• Operating Frequency: 1910 MHz
• Operating Supply Voltage: 4.2 V
• Supply Current: 550 mA
• Maximum Operating Temperature: + 90 C
• Mounting Style: SMD/SMT
• Minimum Operating Temperature: - 20 C
• Number Of Channels: 1 Channel
• Frequency (max): 1.91GHz
• Power Supply Requirement: Dual
• Single Supply Voltage (min): Not RequiredV
• Single Supply Voltage (typ): Not RequiredV
• Single Supply Voltage (max): Not RequiredV
• Package Type: SMD
• Dual Supply Voltage (min): 3.2/3.2V
• Dual Supply Voltage (typ): 3.4V
• Dual Supply Voltage (max): 4.2V
• Operating Temperature Classification: Commercial
• Operating Temp Range: -20C to 90C
• Pin Count: 10
• Mounting: Surface Mount
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Noise Figure: -
• P1db: -
• Test Frequency: -
• Lead Free Status / Rohs Status: Compliant

14
Power control scheme
This control scheme doesn’t
require DC-DC converter. Vcont
changes PA into Low Power
Mode or High Power Mode, which
results in 2-mode control with-
out DC-DC converter. WS2411 is
designed to change the mode at
16 dBm output power.
Table 5. Control scheme: 2-mode control
High Power Mode
Low Power Mode
Shut Down Mode
Table 6. Control scheme: 3-mode control (DC-DC Converter Compatible)
High Power Mode
Middle Power Mode
Low Power Mode
Shut Down Mode
Power Mode
Power Mode
- 2-mode control scheme
Figure 28. PAE (2-mode control).
45
40
35
30
25
20
15
10
5
0
-10
-5
0
5
Pout (dBm)
10
Vref
2.85
2.85
0.00
Vref
2.85
2.85
2.85
0.00
15
20
Vcont
Low
High
–
Vcont
Low
High
High
–
- 3-mode control scheme
This control scheme requires
DC-DC converter. When DC-DC
converter is used, Vcc voltage as
well as Vcont can be changed,
which results in 3-mode control
scheme—Low/Mid/High power
mode. Vcc changes at 7 dBm
output and Vcont changes at
16 dBm output. Voltages for Vcc
are 1.5V for low power mode and
3.4V (battery voltage) for mid
and high power mode.
25
30
Vcc
3.4
3.4
3.4
Vcc
3.4
3.4
1.5
3.4
Power range
~28.5 dBm
~16 dBm
–
Power range
~28.5 dBm
~16 dBm
~7 dBm
–
Figure 29. PAE (3-mode control).
45
40
35
30
25
20
15
10
5
0
-10
-5
PAE graphs for 2-mode control
and 3-mode control are shown in
Figure 28 and Figure 29.
HSDPA
WS2411 meets stringent HSDPA
linearity requirement up to
28.5 dBm. WS2411 can operate
up to 28.5 dBm with Rel.99,
which has a lower PAR (peak-to-
average ratio) than HSDPA.
0
5
Pout (dBm)
10
15
20
25
30