SI4133G-X2 Datasheet, PDF (1/32 Pages) List of Unclassifed Manufacturers – DUAL-BAND RF SYNTHESIZER WITH INTEGRATED VCOS FOR GSM AND GPRS WIRELESS COMMUNICATIONS

Si4133G-X2
DUAL-BAND RF SYNTHESIZER WITH INTEGRATED VCOS
FOR GSM AND GPRS WIRELESS COMMUNICATIONS
Features
! Dual-Band RF Synthesizers !
" RF1: 900 MHz to 1.8 GHz
" RF2: 750 MHz to 1.5 GHz
!
! IF Synthesizer
!
" 1070.4, 1080, and 1089.6 MHz !
! Integrated VCOs, Loop Filters,
Varactors, and Resonators
!
! Minimal External Components !
Required
!
!
Optimized for Use with Hitachi
Bright2+ Transceiver
Settling Time < 150 µs
Low Phase Noise
Programmable Power Down
Modes
1 µA Standby Current
18 mA Typical Supply Current
2.7 V to 3.6 V Operation
Packages: 24-Pin TSSOP and
28-Pin MLP
Applications
! GSM900, DCS1800, and
! GPRS Data Terminals
PCS1900 Cellular Telephones ! HSCSD Data Terminals
Description
The Si4133G-X2 is a monolithic integrated circuit that performs both IF and
dual-band RF synthesis for GSM and GPRS wireless communications
applications. The Si4133G-X2 includes three VCOs, loop filters, reference
and VCO dividers, and phase detectors. Divider and power down settings
are programmable through a three-wire serial interface.
Functional Block Diagram
XIN
PWDNB
SDATA
SCLK
SENB
AUXOUT
Reference
Amplifier
÷65
Power
Down
Control
Serial
Interface
22-bit
Data
Register
Test
Mux
Phase
Detector
RF1
÷N
Phase
Detector
RF2
÷N
Phase
Detector
IF
÷N
RFLA
RFLB
RFOUT
RFLC
RFLD
IFOUT
IFLA
IFLB
Si4133G-XT2
Ordering Information
See page 27.
Pin Assignments
Si4133G-XT2
SCLK
1
SDATA
2
GNDR
3
RFLD
4
RFLC
5
GNDR
6
RFLB
7
RFLA
8
GNDR
9
GNDR 10
RFOUT
11
VDDR 12
24 SENB
23 VDDI
22
IFOUT
21 GNDI
20 IFLB
19 IFLA
18 GNDD
17 VDDD
16 GNDD
15 XIN
14
PWDNB
13
AUXOUT
Si4133G-XM2
28 27 26 25 24 23 22
GNDR 1
21 GNDI
RFLD 2
20 IFLB
RFLC 3
19 IFLA
GNDR 4
18 GNDD
RFLB 5
17 VDDD
RFLA 6
16 GNDD
GNDR 7
8
15 XIN
9 10 11 12 13 14
Patents pending
Rev. 0.9 8/00
Copyright © 2000 by Silicon Laboratories
Si4133GX2-DS09
This information applies to a product under development. Its characteristics and specifications are subject to change without notice.