ACPM-7833-TR1 Avago Technologies US Inc., ACPM-7833-TR1 Datasheet - Page 12

• Manufacturer Part Number: ACPM-7833-TR1
• Description: IC PA MOD CDMA1900 PCS 8-SMD
• Manufacturer: Avago Technologies US Inc.
• Type: Power Amplifierr

Specifications of ACPM-7833-TR1

• Current - Supply: 520mA
• Frequency: 1.85GHz ~ 1.91GHz
• Gain: 27.5dB
• Noise Figure: 4.5dB
• Package / Case: 10-SMD Module
• Rf Type: CDMA
• Voltage - Supply: 3.2V ~ 4.2V
• Operating Frequency: 1910 MHz
• Supply Current: 550 mA
• Maximum Power Dissipation: 2500 mW
• Maximum Operating Temperature: + 85 C
• Mounting Style: SMD/SMT
• Minimum Operating Temperature: - 30 C
• Number Of Channels: 1 Channel
• Frequency (max): 1.91GHz
• Power Supply Requirement: Single
• Single Supply Voltage (min): 3.2V
• Single Supply Voltage (typ): 3.3V
• Single Supply Voltage (max): 4.2V
• Package Type: SMT
• 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: 10
• Mounting: Surface Mount
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• P1db: -
• Test Frequency: -
• Lead Free Status / Rohs Status: Compliant

2. Step Bias Control and Dynamic Bias Control (if controled
PDM1)
The PDM1 output from the baseband IC can be used
to create a software-programmable voltage, to be used
at the phone designer’s discretion. To get high
efficiency and better ACPR, the phone designers can
change control voltage of the PA by adjusting PDM1
voltage according to output power of PA. A caution
when using this approach—careful consideration must
be made to to avoid an abrupt discontinuity in the
output signal when the step bias control voltage is
applied.
The figure below is an example of how to control the
PA for multiple bias points using the PA_ON and Vcntl
pins.
Power Mode
Shut Down
Low Power
Mid Power
High Power
To Duplexer
12
If PDM1 can be controlled then same circuit can be used for Dynamic bias control
Vdd1
Vcntl
Vdd2
Vbias
PA
PA_ON
LOW
HIGH
HIGH
HIGH
Switch Circuit for PA
Battery
Enable
Vcntl
0V
1.2V
1.6V
2.5V
TxIC
C1
R1
Power Range
—
~ -5 dBm
-5 dBm ~ 13 dBm
13 dBm ~ 28.5 dBm
PA_ON
PDM1
Baseband
IC