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PDF RF7234 Data sheet ( Hoja de datos )

Número de pieza RF7234
Descripción 3V TD-SCDMA/W-CDMA LINEAR PA MODULE
Fabricantes RF Micro Devices 
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RF7234
3V TD-SCDMA/W-CDMA LINEAR PA MODULE
BAND 1 AND 1880MHz TO 2025MHz
Package Style: Module, 10-Pin, 3mmx3mmx1.0mm
Features
TD-SCDMA and HSDPA Com-
pliant
Low Voltage Positive Bias
Supply (3.4V to 4.2V)
+28dBm Linear Output
Power W-CDMA
(+26.5dBm HSDPA)
+27.5dBm Output Power
TD-SCDMA
High Efficiency Operation
35% at POUT=+27.5dBm
(TD-SCDMA)
20% at POUT=+19.0dBm
(Without DC/DC Converter)
Low Quiescent Current in Low
Power Mode: 17mA
Internal Voltage Regulator
Eliminates the Need for Exter-
nal Reference Voltage (VREF)
3-Mode Power States with
Digital Control Interface
Supports DC/DC Converter
Operation
Integrated Power Coupler
Integrated Blocking and Col-
lector Decoupling Capacitors
Applications
TD-SCDMA/HSDPA/W-CDMA
Wireless Handsets and Data
Cards
Dual-Mode UMTS Wireless
Handsets
VBAT 1
RF IN 2
VMODE1 3
VMODE0 4
VEN 5
Bias Control &
PA/VMODE Enable
10 VCC
9 RF OUT
8 CPL IN
7 GND
6 CPL OUT
Functional Block Diagram
Product Description
The RF7234 is a high-power, high-efficiency, linear power amplifier
designed for use as the final RF amplifier in 3V, 50TD-SCDMA mobile
cellular equipment and spread-spectrum systems. This PA is developed for
TD-SCDMA 1880MHz to 1920MHz and 2010MHz to 2025MHz frequency
band, plus W-CDMA Band 1. The RF7234 has two digital control pins to
select one of three power modes to optimize performance and current
drain at lower power levels. The part also has an integrated directional
coupler which eliminates the need for an external discrete coupler at the
output. The RF7234 is fully TD-SCDMA/W-CDMA/HSDPA-compliant and is
assembled in a 10-pin, 3mmx3mm module.
Ordering Information
RF7234
RF7234PCBA-410
3V TD-SCDMA/W-CDMA Linear PA Module Band 1 and
1880MHz to 2025MHz
Fully Assembled Evaluation Board
DS100427
Optimum Technology Matching® Applied
GaAs HBT
GaAs MESFET
InGaP HBT
SiGe BiCMOS
Si BiCMOS
SiGe HBT
GaAs pHEMT
Si CMOS
Si BJT
GaN HEMT
RF MEMS
LDMOS
RF MICRO DEVICES®, RFMD®, Optimum Technology Matching®, Enabling Wireless Connectivity™, PowerStar®, POLARIS™ TOTAL RADIO™ and UltimateBlue™ are trademarks of RFMD, LLC. BLUETOOTH is a trade-
mark owned by Bluetooth SIG, Inc., U.S.A. and licensed for use by RFMD. All other trade names, trademarks and registered trademarks are the property of their respective owners. ©2006, RF Micro Devices, Inc.
7628 Thorndike Road, Greensboro, NC 27409-9421 · For sales or technical
support, contact RFMD at (+1) 336-678-5570 or [email protected].
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RF7234 pdf
RF7234
Pin
1
2
3
4
5
6
7
8
9
10
Pkg
Base
Function
VBAT
RF IN
VMODE1
VMODE0
VEN
CPL_OUT
GND
CPL_IN
RF OUT
VCC
GND
Description
Supply voltage for bias circuitry and the first stage amplifier.
RF input internally matched to 50and DC blocked.
Digital control input for power mode selection (see Operating Modes truth table).
Digital control input for power mode selection (see Operating Modes truth table).
Digital control input for PA enable and disable (see Operating Modes truth table).
Coupler output.
This pin must be grounded.
Coupler input used for cascading couplers in series. Terminate this pin with a 50resistor if not connected to
another coupler.
RF output internally matched to 50and DC blocked.
Supply voltage for the second stage amplifier which can be connected to battery supply or output of DC-DC con-
verter.
Ground connection. The package backside should be soldered to a topside ground pad connecting to the PCB
ground plane with multiple ground vias. The pad should have a low thermal resistance and low electrical imped-
ance to the ground plane.
VEN VMODE0 VMODE1 VBAT
VCC
Conditions/Comments
Low Low
Low
3.4V to 3.8V 3.4V to 3.8V Power down mode
Low X
X
3.4V to 3.8V 3.4V to 3.8V Standby Mode
High Low
Low
3.4V to 3.8V 3.4V to 3.8V High power mode
High High
Low
3.4V to 3.8V 3.4V to 3.8V Medium power mode
High High
High
3.4V to 3.8V 3.4V to 3.8V Low power mode
High High
High
3.4V to 3.8V 0.5V
Optional lower VCC in low power mode
Package Drawing
DS100427
7628 Thorndike Road, Greensboro, NC 27409-9421 · For sales or technical
support, contact RFMD at (+1) 336-678-5570 or [email protected].
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