SI4133W Datasheet, PDF (1/32 Pages) Silicon Laboratories – RF SYNTHESIZER WITH INTEGRATED VCOS FOR W-CDMA AND GSM/UMTS WIRELESS COMMUNICATIONS

Si4133W
RF SYNTHESIZER WITH INTEGRATED VCOS
FOR W-CDMA AND GSM/UMTS WIRELESS COMMUNICATIONS
Features
Dual RF synthesizers
RF1: 2.3 GHz to 2.6 GHz
RF2: 750 MHz to 1.7 GHz
IF synthesizer
IF: 62.5 MHz to 1.0 GHz
Integrated VCOs, loop filters,
dividers, and phase detectors
Minimal external components
Continuous operation over a
wide temperature range
Fast settling time: 200 µsec
Low phase noise
5 µA standby current
28-lead MLP, 5 x 5 mm
Applications
Single-mode W-CDMA wireless
handsets, terminals, and
modems
Dual-mode GSM/UMTS wireless
handsets, terminals, and
modems
Description
The Si4133W is a monolithic integrated circuit that performs RF and IF
synthesis for GSM/GPRS and W-CDMA wireless communications. In dual-
mode GSM/UMTS handsets, the Si4133W meets demanding requirements
for very low phase noise and fast settling time for both modes. The Si4133W
integrates three complete phase-locked loops (PLLs) on a single die
including VCOs, loop filters, reference and VCO dividers, and phase
detectors. Dividers and powerdown settings are programmable through a
three-wire serial interface.
Ordering Information:
See page 28.
Pin Assignments
Si4133W-BM
GNDR
RFLD
RFLC
GNDR
NC
GNDR
GNDR
GNDI
IFLB
IFLA
GNDD
VDDD
GNDD
XIN
Functional Block Diagram
Patents pending
XIN
PW DNB
S D ATA
SCLK
SENB
AUXOUT
Reference
A m plifier
Power
Down
Control
Serial
Interface
22-bit
Data
Register
Test
Mux
÷R
Phase
Detector
RF1
÷N
÷R
Phase
Detector
RF2
÷N
÷R
Phase
Detector
IF
÷N
IFDIV
RFOUT
RFLC
RFLD
IFOUT
IFLA
IFLB
Rev. 1.1 9/02
Copyright © 2002 by Silicon Laboratories
Si4133W-DS11