RMPA0965 Fairchild Semiconductor, RMPA0965 Datasheet - Page 4

• Manufacturer Part Number: RMPA0965
• Description: IC MOD RF POWER AMP 8PIN 3X3LCC
• Manufacturer: Fairchild Semiconductor
• Type: Power Amplifierr

Specifications of RMPA0965

• Current - Supply: 60mA
• Frequency: 824MHz ~ 849MHz
• Gain: 30dB
• Noise Figure: 4dB
• Package / Case: 8-LCC
• Rf Type: Cellular, CDMA, CDMA2000, AMPS, IS-95, HSDPA
• Voltage - Supply: 3V ~ 4.2V
• Number Of Channels: 1
• Frequency (max): 849MHz
• Output Power: 28dBm
• Power Supply Requirement: Single
• Single Supply Voltage (min): 3V
• Single Supply Voltage (typ): 3.4V
• Single Supply Voltage (max): 4.2V
• Package Type: PLCC
• Dual Supply Voltage (min): Not RequiredV
• Dual Supply Voltage (typ): Not RequiredV
• Dual Supply Voltage (max): Not RequiredV
• Operating Temperature Classification: Commercial
• Operating Temp Range: -30C to 85C
• Pin Count: 9
• Mounting: Surface Mount
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• P1db: -
• Test Frequency: -
• Lead Free Status / Rohs Status: Compliant
• Other names: RMPA0965TR

RMPA0965 Rev. F
Efficiency Improvement Applications
In addition to high-power/low-power bias modes, the efficiency of the PA module can be significantly increased at backed-off RF
power levels by dynamically varying the supply voltage (Vcc) applied to the amplifier. Since mobile handsets and power amplifiers fre-
quently operate at 10-20 dB back-off, or more, from maximum rated linear power, battery life is highly dependent on the DC power
consumed at antenna power levels in the range of 0 to +16dBm. The reduced demand on transmitted RF power allows the PA supply
voltage to be reduced for improved efficiency, while still meeting linearity requirements for CDMA modulation with excellent margin.
High-efficiency DC-DC converters are now available to implement switched-voltage operation.
With the PA module in low-power mode (Vmode = +2.0V) at+16dBm output power and supply voltages reduced from 3.4V nominal
down to 1.2V, power-added efficiency is more than doubled from 9.5 percent to nearly 25 percent (Vcc = 1.2V) while maintaining a
typical ACPR1 of –52dBc and ACPR2 of less than –61dBc. Operation at even lower levels of Vcc supply voltage are possible with a
further restriction on the maximum RF output power.
Recommended Operating Conditions
DC Turn-On Sequence
1) Vcc1 = Vcc2 = 3.4V (typical)
2) Vref = 2.85V (typical)
3) High-Power: Vmode = 0V (Pout > 16 dBm)
f
Vcc1, Vcc2
Vref
Vmode
Pout
Tc
Low-Power: Vmode = 2V (Pout < 16 dBm)
Symbol
Operating Frequency
Supply Voltage
Reference Voltage
Bias Control Voltage
Linear Output Power
Case Operating Temperature
(Operating)
(Shutdown)
(Low-Power)
(High-Power)
(High-Power)
(Low-Power)
Parameter
4
Min
824
-30
3.0
2.7
1.8
0
0
Typ
2.85
3.4
2.0
Max
849
+28
+16
+85
4.2
3.1
0.5
3.0
0.5
www.fairchildsemi.com
Units
MHz
dBm
dBm
°C
V
V
V
V
V