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SI4123-BM Datasheet(PDF) 1 Page - List of Unclassifed Manufacturers

Part # SI4123-BM
Description  DUAL-BAND RF SYNTHESIZER WITH INTEGRATED VCOS FOR WIRELESS COMMUNICATIONS
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SI4123-BM Datasheet(HTML) 1 Page - List of Unclassifed Manufacturers

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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.
Si413 3
Si4 123 /2 2/13 /1 2
D UAL -B AND RF S YNT H ESIZ E R W IT H I N T EGRATED VC O S
F OR WIRELE S S C OM MUNICAT IONS
Features
Applications
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
!
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
!
Dual-Band Communications
!
Digital Cellular Telephones
GSM, DCS1800, PCS1900
!
Digital Cordless Phones
!
Analog Cordless Phones
!
Wireless LAN and WAN
IFO U T
IFL A
IFL B
RFO UT
XIN
P W DNB
SD AT A
SC LK
SENB
IF
RF2
RF1
Pow e r
Down
Con trol
Refe re nce
A m p lifie r
Serial
In te rfa ce
AU XO U T
IFD IV
÷ R
÷ R
÷ R
÷ N
÷ N
÷ N
Pha se
Detecto r
22-b it
Data
Reg ister
Te st
Mux
RFLC
RFLD
RFLA
RFLB
Pha se
Detecto r
Pha se
Detecto r
Patents pending
Ordering Information:
See page 31.
Pin Assignments
Si4133-BT
Si4133-BM
124
223
322
421
520
619
718
817
916
10
15
11
14
12
13
SCLK
SDA TA
GNDR
RFLD
RFLC
RFLB
GNDR
RFLA
GNDR
GNDR
RFOUT
V DDR
SENB
V DDI
IFOUT
GNDI
IFLB
IFLA
GNDD
V DDD
GNDD
XIN
PWDNB
AUXOUT
RFLD
RFLC
RFLB
GNDR
RFLA
GNDI
IFLB
IFLA
VDDD
GNDD
XIN
21
20
19
18
17
16
15
8
9
10
11
12
13
14
28
27
26
25
24
23
22
1
2
3
4
5
6
7
GNDR
GNDR
GNDD


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