SI5322-B-GM Silicon Laboratories Inc, SI5322-B-GM Datasheet

IC PREC CLOCK MULTIPLIER 36QFN

SI5322-B-GM

Manufacturer Part Number
SI5322-B-GM
Description
IC PREC CLOCK MULTIPLIER 36QFN
Manufacturer
Silicon Laboratories Inc
Type
Clock Multiplierr
Datasheet

Specifications of SI5322-B-GM

Package / Case
36-QFN
Pll
Yes
Input
Clock
Output
CML, CMOS, LVDS, LVPECL
Number Of Circuits
1
Ratio - Input:output
2:2
Differential - Input:output
Yes/Yes
Frequency - Max
1.05GHz
Divider/multiplier
No/Yes
Voltage - Supply
1.71 V ~ 3.63 V
Operating Temperature
-40°C ~ 85°C
Mounting Type
Surface Mount
Frequency-max
1GHz
Mounting Style
SMD/SMT
Number Of Outputs
2
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
P
Description
The Si5322 is a low jitter, precision clock multiplier for
high-speed communication systems, including SONET
OC-48/OC-192, Ethernet, and Fibre Channel. The
Si5322 accepts dual clock inputs ranging from 19.44 to
707 MHz
multiplied clock outputs ranging from 19.44 to
1050 MHz. The input clock frequency and clock
multiplication ratio are selectable from a table of
popular SONET, Ethernet, and Fibre Channel rates.
The Si5322 is based on Silicon Laboratories' 3rd-
generation DSPLL
rate frequency synthesis in a highly integrated PLL
solution that eliminates the need for external VCXO
and loop filter components. The DSPLL loop bandwidth
is digitally programmable, providing jitter performance
optimization at the application level. Operating from a
single 1.8, 2.5, or 3.3 V supply, the Si5322 is ideal for
providing clock multiplication in high performance
timing applications.
Applications
Preliminary Rev. 0.5 2/08
Loss of Signal
I N
SONET/SDH OC-48/STM-16 and OC-192/STM-64
line cards
GbE/10GbE, 1/2/4/8/10GFC line cards
ITU G.709 line cards
Optical modules
Test and measurement
This information applies to a product under development. Its characteristics and specifications are subject to change without notice.
- P
CKIN1
CKIN2
and
ROGRAMMABLE
generates
®
technology, which provides any-
Signal Detect
two
Bandwidth Select
Frequency Select
equal
Copyright © 2008 by Silicon Laboratories
P
frequency-
R E C I S I O N
DSPLL
Control
®
Features
Manual/Auto Switch
Clock Select
Selectable output frequencies ranging from 19.44 to
1050 MHz
Low jitter clock outputs with jitter generation as low
as 0.6 ps
Integrated loop filter with selectable loop bandwidth
(30 kHz to 1.3 MHz)
Dual clock inputs with manual or automatically
controlled switching
Dual clock outputs with selectable signal format:
LVPECL, LVDS, CML, CMOS
Support for ITU G.709 FEC ratios (255/238,
255/237, 255/236)
LOS alarm output
Pin-controlled output phase adjust
Pin-programmable settings
On-chip voltage regulator for 1.8 V ±5%, 2.5 or
3.3 V ±10% operation
Small size: 6 x 6 mm 36-lead QFN
Pb-free, RoHS compliant
C
LOCK
RMS
P
R E L I M I N A R Y
(50 kHz–80 MHz)
M
U LT IP L I E R
CKOUT1
Signal Format
CKOUT2
Disable/BYPASS
VDD (1.8, 2.5, or 3.3 V)
GND
Si5322
D
A TA
S
H E E T
Si5322

Related parts for SI5322-B-GM

SI5322-B-GM Summary of contents

Page 1

... VCXO and loop filter components. The DSPLL loop bandwidth is digitally programmable, providing jitter performance optimization at the application level. Operating from a single 1.8, 2.5, or 3.3 V supply, the Si5322 is ideal for providing clock multiplication in high performance timing applications. Applications ...

Page 2

... Si5322 Table 1. Performance Specifications (V = 1.8 ±5%, 2.5 ±10%, or 3.3 V ±10 Parameter Symbol Temperature Range T A Supply Voltage V DD Supply Current I DD Input Clock Frequency CK F (CKIN1, CKIN2) Output Clock Frequency CK OF (CKOUT1, CKOUT2) 3-Level Input Pins Input Mid Current I IMM Input Clocks (CKIN1, CKIN2) ...

Page 3

... MHz offset Phase Noise @ 100 kHz Offset Max spur @ > < 100 MHz) Still Air www.silabs.com/timing Symbol DIG T JCT T STG Preliminary Rev. 0.5 Si5322 Min Typ Max Unit –40 — — 0.6 TBD ps rms — 0.6 TBD ps rms — ...

Page 4

... Si5322 622 MHz In, 622 MHz Out BW=877 kHz -50 -70 -90 -110 -130 -150 -170 1000 10000 OC-48, 12 kHz to 20 MHz OC-192, 20 kHz to 80 MHz OC-192, 4 MHz to 80 MHz OC-192, 50 kHz to 80 MHz Broadband, 800 MHz 4 100000 1000000 Offset Frequency (Hz) Figure 1. Typical Phase Noise Plot ...

Page 5

... Clock Output 2 Disable/ DBL2_BY Bypass Mode Control 15 kΩ Reset RST Notes: 1. Assumes differential LVEPECL termination (3 clock inputs. 2. Denotes tri-level input pins with states designated as L (ground Assumes manual input clock selection. Figure 2. Si5322 Typical Application Circuit C 1 µ 0.1 µF 3 Ferrite Bead C 0.1 µ ...

Page 6

... Si5322 1. Functional Description The Si5322 is a low jitter, precision clock multiplier for high-speed communication systems, including SONET OC-48/OC-192, SDH STM-16/64 Ethernet, and Fibre Channel. The Si5322 accepts dual clock inputs ranging from 19.44 to 707 MHz and generates two frequency- multiplied clock outputs ranging from 19.44 to 1050 MHz ...

Page 7

... Resets all internal logic to a known state. Clock out- LVCMOS puts are tristated during reset. After rising edge of RST sig- nal, the Si5322 will perform an internal self-calibration. This pin has a weak pull-up. Frequency Table Select. Selects SONET/SDH, datacom, or SONET/SDH to datacom frequency table ...

Page 8

... Si5322 Table 3. Si5322 Pin Descriptions (Continued) Pin # Pin Name I/O 4 C2B O 5, 10 8,19, GND GND 20 AUTOSEL I 12 CKIN2 CKIN2– 14 DBL2_BY I 16 CKIN1 CKIN1– 8 Signal Level CKIN2 Loss of Signal. Active high loss-of-signal indicator for CKIN2. Once trig- LVCMOS gered, the alarm will remain active until CKIN2 is validated. ...

Page 9

... Table 3. Si5322 Pin Descriptions (Continued) Pin # Pin Name I/O Signal Level 21 CS_CA I/O 23 BWSEL1 I 22 BWSEL0 27 FRQSEL3 26 FRQSEL2 I 25 FRQSEL1 24 FRQSEL0 Input Clock Select/Active Clock Indicator. Input: If manual clock selection mode is chosen (AUTOSEL = L), this pin functions as the manual input clock selector. This input is internally deglitched to prevent inadvertent clock switching during changes in the CS input state ...

Page 10

... Si5322 Table 3. Si5322 Pin Descriptions (Continued) Pin # Pin Name I/O 33 SFOUT0 I 30 SFOUT1 34 CKOUT2– CKOUT2+ 29 CKOUT1– CKOUT1 — GND PAD GND GND 10 Signal Level Signal Format Select. Three level inputs that select the output signal format (com- mon mode voltage and differential swing) for both CKOUT1 and CKOUT2 ...

Page 11

... Ordering Guide Ordering Part Number Si5322-C-GM 36-Lead QFN Package ROHS6, Pb-Free Yes Preliminary Rev. 0.5 Si5322 Temperature Range – °C 11 ...

Page 12

... Si5322 4. Package Outline: 36-Pin QFN Figure 3 illustrates the package details for the Si5322. Table 4 lists the values for the dimensions shown in the illustration. Figure 3. 36-Pin Quad Flat No-lead (QFN) Symbol Millimeters Min Nom A 0.80 0.85 A1 0.00 0.02 b 0.18 0.25 D 6.00 BSC D2 3 ...

Page 13

... Recommended PCB Layout Figure 4. PCB Land Pattern Diagram Preliminary Rev. 0.5 Si5322 13 ...

Page 14

... Si5322 Table 5. PCB Land Pattern Dimensions Dimension Notes (General): 1. All dimensions shown are in millimeters (mm) unless otherwise noted. 2. Dimensioning and Tolerancing is per the ANSI Y14.5M-1994 specification. 3. This Land Pattern Design is based on IPC-SM-782 guidelines. 4. All dimensions shown are at Maximum Material Condition (MMC). Least Material Condition (LMC) is calculated based on a Fabrication Allowance of 0 ...

Page 15

... Changed 1.8 V operating range to ±5%. Updated Table 1 on page 2. Updated Table 2 on page 3. Updated Figure 2 on page 5 to add pull-up/pull-down resistors for 3-level inputs. Added figure and table on page 4. Updated 1."Functional Description" on page 6. Clarified 2."Pin Descriptions: Si5322" on page 7. Updated SFOUT values. Preliminary Rev. 0.5 Si5322 15 ...

Page 16

... Si5322 C I ONTACT NFORMATION Silicon Laboratories Inc. 400 West Cesar Chavez Austin, TX 78701 Tel: 1+(512) 416-8500 Fax: 1+(512) 416-9669 Toll Free: 1+(877) 444-3032 Email: Clockinfo@silabs.com Internet: www.silabs.com The information in this document is believed to be accurate in all respects at the time of publication but is subject to change without notice. ...

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