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Si4133

Description
IC SYNTHESIZER RF1/IF 24TSSOP
Categorysemiconductor    Analog mixed-signal IC   
File Size474KB,34 Pages
ManufacturerETC
Download Datasheet View All

Si4133 Overview

IC SYNTHESIZER RF1/IF 24TSSOP

Si413 3
Si4 123 /2 2/13 /1 2
D
U A L
-B
A N D
R F S
Y N T H E S I Z E R
W
I T H
I
N T E G R A T E D
V C O
S
F
O R
W
IRELESS
C
OM MUNICATIONS
Features
!
"
"
RF1: 900 MHz to 1.8 GHz
RF2: 750 MHz to 1.5 GHz
IF: 62.5 MHz to 1000 MHz
!
!
!
!
!
!
!
IF Synthesizer
"
Integrated VCOs, Loop Filters,
!
Varactors, and Resonators
Minimal (2) External
Components Required
S
Dual-Band RF Synthesizers
!
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
i4
13
Ordering Information:
See page 31.
Applications
!
!
Dual-Band Communications
Digital Cellular Telephones
GSM, DCS1800, PCS1900
!
!
!
Digital Cordless Phones
Analog Cordless Phones
Wireless LAN and WAN
3-
Pin Assignments
B
T
Si4133-BT
SCLK
SDA TA
GNDR
RFLD
RFLC
GNDR
RFLB
RFLA
GNDR
1
2
3
4
5
6
7
8
9
10
11
12
24
23
22
21
20
19
18
17
16
15
14
13
SENB
V DDI
IFOUT
GNDI
IFLB
IFLA
GNDD
V DDD
GNDD
XIN
PWDNB
A UXOUT
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
GNDR
RFOUT
V DDR
X IN
R eference
A m plifier
P ow er
D ow n
C ontrol
÷
R
P hase
D etector
R F1
R FLA
R FLB
PW DNB
÷
N
÷
R
R FO UT
GNDR
Si4133-BM
SDA TA
SCLK
SENB
IFOUT
GNDI
V DDI
S D AT A
S C LK
S E NB
S erial
Interface
22-bit
D ata
R egister
P hase
D etector
R F2
R FLC
R FLD
GNDR
28
1
2
3
4
5
6
7
8
GNDR
27
26
25
24
23
22
21
20
19
18
17
16
15
GNDI
IFLB
IFLA
GNDD
V DDD
GNDD
XIN
÷
N
RFLD
A U XO U T
Test
Mux
÷
R
P hase
D etector
IF
RFLC
IFD IV
IFO U T
GNDR
RFLB
RFLA
GNDR
÷
N
IFLA
IFLB
9
GNDR
10
RFOUT
11
V DDR
12
A UXOUT
13
PWDNB
14
GNDD
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.
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