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부품번호 | RMPA0951AT 기능 |
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기능 | 3V Cellular CDMA PowerEdge Power Amplifier Module | ||
제조업체 | Fairchild Semiconductor | ||
로고 | |||
www.DataSheet4U.com
September 2004
RMPA0951AT
3V Cellular CDMA PowerEdge™ Power Amplifier Module
General Description
The RMPA0951AT is a dual mode, small-outline Power
Amplifier Module (PAM) for Cellular CDMA personal
communication system applications. The PA is internally-
matched to 50Ω and DC blocked which minimizes the use
of external components and reduces circuit complexity for
system designers. High AMPS/CDMA efficiency and good
linearity are achieved using our InGaP Heterojunction
Bipolar Transistor (HBT) process.
Features
• Single positive-supply operation
• High dual-mode (AMPS/CDMA) efficiency
• Excellent linearity
• Small size: 6.0 x 6.0 x 1.5 mm3 LCC package
• 50Ω matched input and output module
• Adjustable quiescent current and power-down mode
• Suitable for CDMA and CDMA2000 1X systems
Device
Absolute Ratings1
Symbol
Vc1, Vc2
Vref
Pin
VSWR
Tc
Tstg
Parameter
Supply Voltage
Reference Voltage
RF Input Power2
Load VSWR
Case Operating Temperature
Storage Temperature
Notes:
1: No permanent damage with only one parameter set at extreme limit and other parameters typical.
2: Typical RF input powers for (+28dBm, CDMA) is -3dBm and for (+31dBm, AMPS) is +2dBm.
Ratings
6.0
1.5 to 4.0
+7
6:1
-30 to +85
-55 to +150
Units
V
V
dBm
°C
°C
©2004 Fairchild Semiconductor Corporation
RMPA0951AT Rev. D
www.DataSheet4U.com
With device marking oriented right side up, RF IN is on the left and RF OUT is on the right.
Vcc = +3.4V nominal. Vref = +3.0V nominal to obtain Iccq = 80 mA. Operation at lower or higher quiescent currents can be
achieved by decreasing or increasing Vref voltage relative to +3.0V.
First ground the PCB (GND terminal) and apply +3.4V to the collector supply terminals (Vcc1, Vcc2). Next apply +3.0V to
the reference supply (Vref terminal). Quiescent collector current with no RF applied will be about 80 mA. Reference supply
current with or without RF applied will be about 15 mA. When turning amplifier off, reverse power supply sequence.
Apply -20dBm RF input power at Cellular frequency (824-849 MHz). After making any initial small signal measurements at
this drive level, input power may be increased up to a maximum of +7dBm for large signal, analog (AMPS) or digital CDMA
measurements. Do not exceed +7dBm input power.
Vcc1
PCB Specifications:
Material: Rogers R04003
Dimensions: 2.0"x1.5"x0.032"
Metallization: 1/2 oz
Copper Cladding
Vref Vcc2
Figure 3. Evaluation Board Layout and Instructions
PCB Schematic
Note: Addition of C3 bypass
capacitor on Vref pin
recommended to minimize
Rx band noise
C1*
3.3 µF
SMA1
RF IN
Vcc1
Vref
50Ω TRL
C3*
1000 pF
1 6 N/C
2
RMPA0951AT
5
50Ω TRL
3 4 Vcc2
7 (package base)
C2*
3.3 µF
SMA2
RF OUT
* Minimum bypass capacitance recommended for best linearity/low-noise performance.
Figure 4. Evaluation Board Schematic
©2004 Fairchild Semiconductor Corporation
RMPA0951AT Rev. D
4페이지 www.DataSheet4U.com
Typical Characteristics
Measured performance for typical production amplifiers is represented in the figures below. Key characteristics such as gain,
efficiency, output power and linearity are shown for both AMPS and CDMA operation.
35.00
34.00
33.00
32.00
31.00
30.00
RMPA0951AT CDMA Gain vs Pout,
Frequency and Temperature
+25°C, -30°C
824 MHz (+25C)
836.5 MHz (+25C)
849 MHz (+25C)
824 MHz (+85C)
836.5 MHz (+85C)
849 MHz (+85C)
824 MHz (-30C)
836.5 MHz (-30C)
849 MHz (-30C)
29.00
28.00
27.00
+85°C
26.00
25.00
0.0 4.0 8.0 12.0 16.0 20.0
Output Power (dBm)
24.0
28.0
50.0
45.0
40.0
35.0
30.0
25.0
20.0
15.0
10.0
5.0
0.0
0.0
RMPA0951AT PAE vs. Output Power
(Vcc = 3.4V, f = 836.5MHz, Tc = 25°C)
Note: 31.5dBm is single-tone CW
2.0Vref
2.1Vref
2.2Vref
2.3Vref
2.4Vref
2.5Vref
2.6Vref
2.7Vref
2.8Vref
2.9Vref
3.0Vref
4.0 8.0 12.0 16.0 20.0 24.0 28.0 32.0
Output Power (dBm)
RMPA0951AT Icc vs. Vref and Pout
(Vcc = 3.4V, f = 836.5MHz, Tc = 25°C)
Note: 31.5dBm is single-tone CW
900
800 P-out=+31.5dBm
700
600
500
P-out=+28dBm
400
300 P-out=+24dBm
200 P-out=+16dBm
100
0
2.4 2.5 2.6 2.7 2.8
Vref (V)
P-out=+4dBm
2.9 3.0
3.1
RMPA0951AT Adjacent Channel Power Ratio vs Output Power
(Vcc = 3.4V, Vref = 3.0V, Ta = +25°C)
-40.00
-45.00
-50.00
-55.00
-60.00
-65.00
-70.00
-75.00
-80.00
4.0
824 MHz ACPR1
824 MHz ACPR2
836.5 MHz ACPR1
836.5 MHz ACPR2
849 MHz ACPR1
849 MHz ACPR2
8.0 12.0 16.0 20.0 24.0 28.0
Pout (dBm)
RMPA0951AT Vcc = 3.4V, Vref = 3.0V, Pout = 28dBm, CDMA Modulation
Total Current vs Freq and Temp
600.0
580.0
560.0
540.0
520.0
500.0
480.0
460.0
-30C
+25C
+85C
440.0
420.0
400.0
824.0 826.5 829.0 831.0 834.0 836.0 839.0 841.0 844.0 846.0 849.0
Frequency (MHz)
RMPA0951AT AMPS Mode Gain vs Temperature/Frequency
(Pout = 31.5dBm CW)
35.0
34.0 -30C
+25C
33.0 +85C
32.0
31.0
30.0
29.0
28.0
27.0
26.0
25.0
824.0 826.5 829.0 831.5 834.0 836.5 839.0 841.5 844.0 846.5 849.0
Frequency (MHz)
RMPA0951AT Vcc = 3.4V, Vref = 3.0V, Pout = 31.5dBm CW
Total Current vs Freq and Temp
900.0
880.0
860.0
840.0
820.0
800.0
780.0
-30C
+25C
+85C
760.0
740.0
720.0
700.0
824.0 826.5 829.0 831.5 834.0 836.5 839.0 841.5 844.0 846.5 849.0
Frequency (MHz)
-45.00
RMPA0951AT Vcc = 3.4V, Vref = 3.0V, Pout = 28dBm
CDMA Modulation ACPR1 @ 885kHz,
ACPR2 @ 1.98MHz vs Frequency and Temperature
-47.00
-49.00
-51.00
-53.00
-55.00
ACPR1
-57.00
-59.00
-61.00
ACPR2
ACPR1 -30C
ACPR1 +25C
ACPR1 +85C
-63.00
-65.00
ACPR2 -30C
ACPR2 +25C
ACPR2 +85C
824.0 826.5 829.0 831.5 834.0 836.5 839.0 841.5 844.0 846.5 849.0
Frequency (MHz)
©2004 Fairchild Semiconductor Corporation
RMPA0951AT Rev. D
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RMPA0951AT | 3V Cellular CDMA PowerEdge Power Amplifier Module | Fairchild Semiconductor |
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