Si5013
OC-12/3, STM-4/1 SONET/SDH CDR IC
WITH
L
IMITING
A
MPLIFIER
Features
H
igh-speed clock and data recovery device with integrated limiting amplifier:
!
!
!
!
!
!
Supports OC-12/3, STM-4/1
DSPLL™ technology
Low power—560 mW (typ)
Small footprint: 5 x 5 mm
Bit error rate alarm
Reference and reference-less
operation supported
!
!
Jitter generation 2.3 mUI
rms
(typ)
Loss-of-signal level alarm
!
Data slicing level control
!
10 mV
PP
differential sensitivity
!
3.3 V supply
Ordering Information:
See page 22.
Applications
!
BER_ALM
CLKOUT+
DIN–
Description
The Si5013 is a fully-integrated, high-performance limiting amplifier (LA) and clock
and data recovery (CDR) IC for high-speed serial communication systems. It
derives timing information and data from a serial input at OC-12/3 and STM-4/1
rates. Use of an external reference clock is optional. Silicon Laboratories®
DSPLL
™
technology eliminates sensitive noise entry points, thus making the PLL
less susceptible to board-level interaction and helping to ensure optimal jitter
performance.
The Si5013 represents a new standard in low jitter, low power, small size, and
integration for high-speed LA/CDRs. It operates from a 3.3 V supply over the
industrial temperature range (–40 to 85 °C).
RATESEL
GND
LOS_LVL
SLICE_LVL
REFCLK+
REFCLK–
LOL
1
2
3
4
5
6
7
28 27 26 25 24 23 22
21 VDD
20 REXT
19 RESET/CAL
GND
Pad
CLKOUT–
18 VDD
17 DOUT+
16 DOUT–
15 TDI
SONET/SDH/ATM routers
!
Add/drop multiplexers
!
Digital cross connects
!
Board level serial links
!
SONET/SDH test equipment
!
Optical transceiver modules
!
SONET/SDH regenerators
Pin Assignments
Si5013
CLKDSBL
DIN+
BER_LVL
DSQLCH
8
LTR
9
LOS
10 11 12 13 14
VDD
VDD
Functional Block Diagram
LOS_LVL
LOS
Signal
Detect
Retimer
DSQLCH
BUF
2
DOUT+
DOUT–
DIN+
DIN–
2
Limiting
Amp
DSPLL
BER
Monitor
BUF
2
CLKOUT+
CLKOUT–
CLK_DSBL
REFCLK+
REFCLK–
(Optional)
2
Lock
Detection
Bias Gen.
Reset/
Calibration
BER_ALM
REXT
RATESEL
RESET/CAL
SLICE_LVL
LTR
BER_LVL
LOL
Rev. 1.3 12/03
Copyright © 2003 by Silicon Laboratories
VDD
NC
Si5013-DS13
Si5013
T
A B L E
Section
OF
C
O N T E N TS
Page
5
12
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13
14
14
14
15
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15
16
16
16
16
16
16
16
18
19
22
23
24
26
Electrical Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Typical Application Schematic . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Functional Description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Limiting Amplifier . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
DSPLL™ . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Multi-Rate Operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Operation Without an External Reference . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Operation With an External Reference . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Lock Detect . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Lock-to-Reference . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Loss-of-Signal . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Bit Error Rate (BER) Detection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Data Slicing Level . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
PLL Performance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
RESET/DSPLL Calibration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Clock Disable . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Data Squelch . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Device Grounding . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Bias Generation Circuitry . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Voltage Regulator . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Differential Input Circuitry . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Differential Output Circuitry . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Pin Descriptions: Si5013 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Ordering Guide . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Package Outline . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Document Change List . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Contact Information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Rev. 1.3
3
Si5013
Electrical Specifications
Table 1. Recommended Operating Conditions
Parameter
Ambient Temperature
Si5013 Supply Voltage
2
Symbol
T
A
V
DD
Test Condition
Min
1
–40
3.135
Typ
25
3.3
Max
1
85
3.465
Unit
°C
V
Notes:
1.
All minimum and maximum specifications are guaranteed and apply across the recommended operating conditions.
Typical values apply at nominal supply voltages and an operating temperature of 25 °C unless otherwise stated.
2.
The Si5013 specifications are guaranteed when using the recommended application circuit (including component
tolerance) of "Typical Application Schematic" on page 12.
V
SIG NAL+
SIG NAL–
V
IS
t
A. Operation with Single-Ended Inputs
V
SIGNAL+
SIGNAL–
0.5 V
ID
(SIGNAL+) – (SIG NAL–)
V
ID
t
B. O peration with Differential Inputs and Outputs
Figure 1. Differential Voltage Measurement (DIN, REFCLK, DOUT, CLKOUT)
Rev. 1.3
5
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