ACPM-7357-TR1 Avago Technologies US Inc., ACPM-7357-TR1 Datasheet - Page 9

• Manufacturer Part Number: ACPM-7357-TR1
• Description: IC PA MOD UMTS BAND1/8 14-SMD
• Manufacturer: Avago Technologies US Inc.
• Type: Power Amplifierr

Specifications of ACPM-7357-TR1

• Package / Case: 14-SMD Module
• Current - Supply: 400mA
• Frequency: 890MHz ~ 915MHz, 1.92GHz ~ 1.98GHz
• Gain: 27.3dB
• Rf Type: UMTS
• Test Frequency: 1.92GHz ~ 1.98GHz
• Voltage - Supply: 3.2V ~ 4.2V
• Operating Frequency: 1980 MHz
• Supply Current: 450 mA
• Maximum Operating Temperature: + 85 C
• Mounting Style: SMD/SMT
• Minimum Operating Temperature: - 30 C
• Number Of Channels: 2 Channels
• Lead Free Status / RoHS Status: Contains lead / RoHS non-compliant
• Noise Figure: -
• P1db: -
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant, Contains lead / RoHS non-compliant

Marking Specification
CoolPAM
Avago Technologies’ CoolPAM is stage-bypass PA technol-
ogy which saves more power compared with convention-
al PA. With this technology, the ACPM-7357 has very low
quiescent current, and efficiencies at low and medium
output power ranges are high.
Incorporation of bias circuit
The ACPM-7357 has internal bias circuit, which removes
the need for external constant voltage source (LDO). PA
on/off is controlled by Ven. This is digitally control pin.
3-mode power control with two mode control pins
The ACPM-7357 supports three power modes (bypass
power mode/mid power mode/high power mode) with
two mode control pins (Vmode and Vbp). This control
scheme enables the ACPM-7357 to save power consump-
tion more, which accordingly gives extended talk time.
PDF (probability density function) in the Figure 1. showing
distribution of output power of mobile in real field gives
motivation for stage-bypass PA. Output power is less than
16dBm for most of operating time (during talking), so it is
important to save power consumption at low and medium
output power ranges.
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Figure 1. PDF and Current
Average current & Talk time
Average current consumed by PA can be calculated by
summing up current at each output power weighted with
probability. So it is expressed with integration of multipli-
cation of current and probability at each output power.
Talk time is extended more as average current consump-
tion is lowered.
Average current =
extended more as average current consump-
more as average current consump-
³
(PDF x Current) dp
consump-