RF3854 查看數據表（PDF） - RF Micro Devices
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RF3854 Datasheet PDF : 26 Pages
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RF3854
LOW NOISE, MULTI-MODE, QUAD-BAND,
QUADRATURE MODULATOR AND PA DRIVER
RoHS Compliant & Pb-Free Product
Package Style: QFN, 24-Pin, 4x4
Features
W-CDMA High/Mid/Low
Power Modes
Quad-Band Direct Quadrature
Modulator
Variable Gain PA Drivers
GMSK Bypass Amplifiers
LO Frequency Doubler and
Divider
Baseband Filtering
Qualified to Infrastructure
Standards
Applications
CDMA, GSM, and UMTS Bas-
estation Architecture
ISM Transceivers
Broadband Fixed Wireless
Access and Wireless Local
Loop
GMSK, QPSK, DQPSK, QAM
Modulation
24
23
22
VCC2 1
LO HB P 2
Note: The die flag is the
chip's main ground.
LO HB N 3
DIV +45°
2 -45°
LO LB P 4
Flo +45°
x2 -45°
LO LB N 5
Mode Control
and Biasing
MODE C 6
7
8
9
21
20
19
18
RF OUT
WB P
17
RF OUT
WB N
16
RF OUT
HB P
Σ
15
RF OUT
HB N
Power
Control
14
RF OUT
LB P
13
RF OUT
LB N
10
11
12
Functional Block Diagram
Product Description
The RF3854 is a low noise, multi-mode, quad-band direct I/Q to RF modu-
lator and PA driver solution designed for digital modulation applications
ranging from 800MHz to 2000MHz. Frequency doublers, dividers and LO
buffers are included to support a variety of LO generation options.
Dynamic power control is supported through a single analog input giving
90dB of power control range for the W-CDMA mode and 40dB of power
control in the other two modes. Three sets of RF outputs are provided:
high band and low band low noise EDGE/GMSK outputs, as well as one
wideband W-CDMA output. The device is designed for 2.7V to 3.3V opera-
tion, and is assembled in a plastic, 24-pin, 4mmx4mm QFN.
Ordering Information
RF3854
RF3854PCBA-41X
Low Noise, Multi-Mode, Quad-Band, Quadrature Modulator
and PA Driver
Fully Assembled Evaluation Board
Optimum Technology Matching® Applied
GaAs HBT
9SiGe BiCMOS
GaAs pHEMT
GaN HEMT
GaAs MESFET
Si BiCMOS
Si CMOS
InGaP HBT
SiGe HBT
Si BJT
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.
Rev A1 DS070313
7628 Thorndike Road, Greensboro, NC 27409-9421 · For sales or technical
support, contact RFMD at (+1) 336-678-5570 or sales-support@rfmd.com.
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