Si4133 Datasheet, PDF (1/34 Pages) List of Unclassifed Manufacturers – DUAL-BAND RF SYNTHESIZER WITH INTEGRATED VCOS FOR WIRELESS COMMUNICATIONS

Si4133
Si4123/22/13/12
DUAL-BAND RF SYNTHESIZER WITH INTEGRATED VCOS
FOR WIRELESS COMMUNICATIONS
Features
! Dual-Band RF Synthesizers !
" RF1: 900 MHz to 1.8 GHz
!
" RF2: 750 MHz to 1.5 GHz
!
! IF Synthesizer
!
" IF: 62.5 MHz to 1000 MHz
!
! Integrated VCOs, Loop Filters, !
Varactors, and Resonators
! Minimal (2) External
Components Required
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, 28-Lead
MLP
Applications
! Dual-Band Communications
! Digital Cellular Telephones
GSM, DCS1800, PCS1900
! Digital Cordless Phones
! Analog Cordless Phones
! Wireless LAN and WAN
Description
The Si4133 is a monolithic integrated circuit that performs both IF and dual-
band RF synthesis for wireless communications applications. The Si4133
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
X IN
PW DNB
SDATA
SCLK
SENB
AUXOUT
R efe re nc e
A m p lifie r
Power
Down
C o n tro l
Serial
In te rfa c e
22-bit
Data
R eg ister
Test
Mux
÷R
Phase
D e te c to r
RF1
÷N
÷R
Phase
D e te c to r
RF2
÷N
÷R
Phase
D e te c to r
IF
÷N
IF D IV
RFLA
RFLB
RFOUT
RFLC
RFLD
IF O U T
IF L A
IF L B
Si4133-BT
Ordering Information:
See page 31.
Pin Assignments
Si4133-BT
SCLK
1
SDA TA
2
GNDR
3
RFLD
4
RFLC
5
GNDR
6
RFLB
7
RFLA
8
GNDR
9
GNDR
10
RFOUT
11
V DDR
12
24
SENB
23
V DDI
22
IFOUT
21
GNDI
20
IFLB
19
IFLA
18
GNDD
17
V DDD
16
GNDD
15
XIN
14
PW DNB
13
A UXOUT
Si4133-BM
GNDR
RFL D
RFL C
GNDR
RFL B
RFL A
GNDR
28 27 26 25 24 23 22
1
21
GNDI
2
20 IFLB
3
19 IFLA
4
18 GNDD
5
17 V DDD
6
16 GNDD
7
8
15 XIN
9 10 11 12 13 14
Patents pending
Rev. 1.1 3/01
Copyright © 2001 by Silicon Laboratories
Si4133-DS11
This information applies to a product under development. Its characteristics and specifications are subject to change without notice.