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ACPM-7813 Schematic ( PDF Datasheet ) - Hewlett-Packard

Teilenummer ACPM-7813
Beschreibung CDMA/AMPS Power Amplifier Module
Hersteller Hewlett-Packard
Logo Hewlett-Packard Logo 




Gesamt 21 Seiten
ACPM-7813 Datasheet, Funktion
www.DataSheet4U.com
Agilent ACPM-7813
CDMA/AMPS
Power Amplifier Module
Data Sheet
Description
The ACPM-7813 is a fully
matched CDMA Power amplifier
module. Designed around Agilent
Technologies’ new Enhancement
Mode pHEMT process, the
ACPM-7813 offers premium
performance in a very small form
factor. Fully matched to 50 Ohms
on the input and output.
The amplifier has excellent ACPR
and efficiency performance at
max Pout and low quiescent
current with a single bias control
voltage. For even lower quiescent
current, a dynamic bias control
circuit can be used by varying
the voltage on the Vcntl pin
between 1.2V to 2.5V.
Designed in a surface mount RF
packageD, tahteaSAhCePeMt4-U78.c1o3mis cost
and size competitive.
The ACPM-7813 is another key
component of the Agilent
CDMAdvantage RF chipset.
Vdd1
Vbias
Vdd2
Features
• Operating frequency:
824 – 849 MHz
• 28.5 dBm linear output power
@ 3.4 V
• High efficiency: 40% PAE
• Dynamic bias control for low
midpower Idd
• Very low quiescent current with
single control voltage
• Internal 50 ohm matching networks
for both RF IN/OUT
• 3.2 – 4.2V linear operation
• cdma2000 1xRTT capable
• Only 3 SMT parts needed
• 4.0 x 4.0 x 1.1 mm SMT package
Applications
• CDMA handsets
• Datacards
• PDAs
Input
Power
Input
Match
Bias Circuit
On Chip
Inter-stage
Match
Passive
Output
Match
Output
DataShee
Vcntl
Single control bias setting for low Idq
and 40%PAE at Pout = 28.5 dBm
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ACPM-7813 Datasheet, Funktion
www.DataSheet4U.com
Reel Drawing
BACK VIEW
Shading indicates
thru slots
18.4 max.
25
min wide (ref)
Slot for carrier tape
insertion for attachment
to reel hub (2 places 180° apart)
FRONT VIEW
178
+0.4
–0.2
50 min.
12.4
+2.0
–0.0
et4U.com
1.5 min.
13.0±0.2
21.0±0.8
DataSheet4U.com
NOTES:
1. Reel shall be labeled with the following
information (as a minimum).
a. manufacturers name or symbol
b. Agilent Technologies part number
c. purchase order number
d. date code
e. quantity of units
2. A certificate of compliance (c of c) shall
be issued and accompany each shipment
of product.
3. Reel must not be made with or contain
ozone depleting materials.
4. All dimensions in millimeters (mm)
DataShee
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ACPM-7813 pdf, datenblatt
www.DataSheet4U.com
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 accord-
ing 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 pin.
Power Mode
Shut Down
Low Power
Mid Power
High Power
PA_ON
LOW
HIGH
HIGH
HIGH
Vcntl
0V
1.2V
1.6V
2.5V
Power Range
~ -5 dBm
-5 dBm ~ 13 dBm
13 dBm ~ 28.5 dBm
et4U.com
To Duplexer
Vbias
Vdd2
Vdd1 PA
Vcntl
Battery
TxIC
Enable
Switch Circuit for PA
DataSheet4U.com
Baseband
IC
R1
C1
PA_ON
PDM1
If PDM1 can be controlled then same circuit can be used for Dynamic bias control.
DataShee
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12 Page





SeitenGesamt 21 Seiten
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