Micrel, Inc.
ULTRA-PRECISION DIFFERENTIAL
400mV LVPECL LINE DRIVER/RECEIVER
WITH INTERNAL TERMINATION
Precision Edge
®
SY58602U
Precision Edge
®
SY58602U
FEATURES
■
Guaranteed AC performance over temperature and
voltage:
• DC-to >10.7Gbps data rate throughput
• DC-to >7GHz clock f
MAX
• <250ps In-to-Out t
pd
• t
r
/ t
f
<70ps
■
Ultra low-jitter design:
• <1ps
RMS
random jitter
• <10ps
PP
deterministic jitter
• <10ps
PP
total jitter (clock)
■
Minimum input swing 200mV (|IN–/IN|)
■
Unique, patent-pending input termination and VT pin
accepts DC- and AC-coupled inputs (CML, PECL,
LVDS)
■
Typical 400mV LVPECL output swing
■
Power supply 2.5V
±
5% or 3.3V
±
10%
■
–40
°
C to 85
°
C industrial temperature range
■
Available in an ultra-small (2mm
×
2mm) 8-pin MLF
®
package
Precision Edge
®
DESCRIPTION
The SY58602U is a 2.5V/3.3V precision, high-speed,
differential receiver capable of handling clocks up to 7GHz
and data streams up to 10.7Gbps.
The differential input includes Micrel’s unique, 3-pin input
termination architecture that allows users to interface to any
differential signal (AC- or DC-coupled) as small as 200mV
pp
without any level shifting or termination resistor networks in
the signal path. The outputs are 400mV LVPECL, with
extremely fast rise/fall times guaranteed to be less than
70ps.
The SY58602U operates from a +2.5V
±5%
supply or a
+3.3V
±10%
supply and is guaranteed over the full industrial
temperature range of –40°C to +85°C. For applications that
require CML outputs, consider the SY58600U or for 800mV
LVPECL outputs the SY58601U. The SY58602U is part of
Micrel’s high-speed, Precision Edge
®
product line.
All support documentation can be found on Micrel’s web
site at: www.micrel.com.
APPLICATIONS
■
■
■
■
Backplane buffering
OC-12 to OC-192 SONET/SDN clock/data distribution
All Gigabit Ethernet distribution
Fibre Channel distribution
FUNCTIONAL BLOCK DIAGRAM
TYPICAL APPLICATION
IN
50Ω
V
T
50Ω
/IN
V
REF-AC
/Q
Q
Backplane
SY58602U
100mV Input Swing
400mV Output Swing
400mV
100mV
Input Waveform
Output Waveform
Precision Edge is a registered trademark of Micrel, Inc.
Micro
LeadFrame and MLF are registered trademarks of Amkor Technology, Inc.
M9999-022007
hbwhelp@micrel.com or (408) 955-1690
Rev.: C
Amendment: /0
1
Issue Date: February 2007
Micrel, Inc.
Precision Edge
®
SY58602U
PACKAGE/ORDERING INFORMATION
Ordering Information
(1)
IN
1
VT
2
VREF-AC
3
/IN
4
8
VCC
7
Q
6
/Q
5
GND
Part Number
SY58602UMITR
(2)
SY58602UMGTR
(2, 3)
Notes:
Package
Type
MLF-8
MLF-8
Operating
Range
Industrial
Industrial
Package
Marking
602
602 with
Pb-Free bar-line indicator
Lead
Finish
Sn-Pb
Pb-Free
NiPdAu
8-Pin
MLF
®
1. Contact factory for die availability. Dice are guaranteed at T
A
= 25°C, DC electricals only.
(MLF-8)
2. Tape and Reel.
3. Pb-Free package recommended for new designs.
PIN DESCRIPTION
Pin Number
1, 4
Pin Name
IN, /IN
Pin Function
Differential Input: This input pair is the signal to be buffered. These inputs accept AC or DC-
coupled signals as small as 100mV. Each pin of this pair internally terminates to a VT pin
through 50Ω. Note that this input will default to an indeterminate state if left open. Please
refer to the “Input Interface Applications” section for more details.
Input Termination Center-Tap: Each side of the differential input pair terminates to this pin.
The VT pin provides a center-tap to a termination network for maximum interface flexibility.
See “Input Interface Applications” section for more details.
Reference Output Voltage: This output biases to V
CC
–1.2V. Connect to VT pin when AC-
coupling the input. Bypass with 0.01µF low ESR capacitor to V
CC
. Maximum current source
or sink is 0.5mA. See “Input Interface Applications” section.
Positive Power Supply. Bypass with 0.1µF||0.01µF low ESR capacitors as close to the VCC
pin as possible.
Differential 100K LVPECL Output: This LVPECL output is the output of the device Terminate
through 50Ω to V
CC
–2.0V. See “Output Interface Applications” section.
Ground. Ground pin and exposed pad must be connected to the same ground plane.
2
VT
3
VREF-AC
8
7, 6
5
VCC
Q, /Q
GND,
Exposed
M9999-022007
hbwhelp@micrel.com or (408) 955-1690
2
Micrel, Inc.
Precision Edge
®
SY58602U
Absolute Maximum Ratings
(1)
Supply Voltage (V
CC
) .................................. –0.5V to +4.0V
Input Voltage (V
IN
) ......................................... –0.5V to V
CC
LVPECL Output Current (I
OUT
)
Continuous ............................................................. 50mA
Surge .................................................................... 100mA
Termination Current
Source or Sink Current on V
T ....................................
±100mA
Input Current
Source or Sink Current on IN, /IN ........................
±50mA
Current (V
REF
)
(3)
Source or Sink Current on V
REF–AC .........................
±1.5mA
Lead Temperature (soldering, 20 sec.) ................... +260°C
Storage Temperature (T
S
) ....................... –65°C to +150°C
Operating Ratings
(2)
Supply Voltage (V
CC
) ...................... +2.375V to +2.625V or
............................................................ +3.0V to +3.6V
Ambient Temperature (T
A
) ......................... –40°C to +85°C
Package Thermal Resistance
(4)
MLF™
(θ
JA
)
Still-Air ............................................................. 93°C/W
MLF™
(ψ
JB
)
Junction-to-Board ............................................ 32°C/W
DC ELECTRICAL CHARACTERISTICS
(5)
T
A
= –40°C to +85°C, unless otherwise noted.
Symbol
V
CC
I
CC
R
DIFF_IN
R
IN
V
IH
V
IL
V
IN
V
DIFF_IN
V
T_IN
V
REF–AC
Notes:
1. Permanent device damage may occur if the ratings in “Absolute Maximum Ratings” section are exceeded. This is a stress rating only and functional
operation is not implied for conditions other than those detailed in the operational sections of this data sheet. Exposure to absolute maximum ratings
conditions for extended periods may affect device reliability.
2. The data sheet limits are not guaranteed if the device is operated beyond the operating ratings.
3. Due to the limited drive capability use for input of the same package only.
4. Package thermal resistance assumes exposed pad is soldered (or equivalent) to the devices most negative potential on the PCB.
ψ
JB
uses 4-layer
θ
JA
in still-air, unless otherwise stated.
5. The circuit is designed to meet the DC specifications shown in the above table after thermal equilibrium has been established.
6. Includes current through internal 50Ω pull-ups.
Parameter
Power Supply
Power Supply Current
Differential Input Resistance
(IN-to-/IN)
Input Resistance
(IN-to-V
T
, /IN-to-V
T
)
Input HIGH Voltage
(IN, /IN)
Input LOW Voltage
(IN, /IN)
Input Voltage Swing
(IN, /IN)
Differential Input Voltage Swing
|IN–, /IN|
In-to-V
T
(IN, /IN)
Output Reference Voltage
Condition
V
CC
= 2.5V.
V
CC
= 3.3V.
No Load, max. V
CC
,
Note 6
Min
2.375
3.0
Typ
2.5
3.3
48
Max
2.625
3.6
65
120
60
V
CC
V
IH
–0.1
1.7
3.4
1.28
Units
V
V
mA
Ω
Ω
V
V
V
V
V
V
80
40
V
CC
–1.2
0
See Figure 1a.
See Figure 1b.
0.1
0.2
100
50
V
CC
–1.3 V
CC
–1.2 V
CC
–1.1
M9999-022007
hbwhelp@micrel.com or (408) 955-1690
3
Micrel, Inc.
Precision Edge
®
SY58602U
LVPECL OUTPUTS DC ELECTRICAL CHARACTERISTICS
(8)
V
CC
= 2.5V
±5%
or 3.3V
±10%;
T
A
= –40°C to +85°C; R
L
= 50Ω to V
CC
–2V, unless otherwise noted.
Symbol
V
OH
V
OL
V
OUT
V
DIFF_OUT
Parameter
Output HIGH Voltage
Q, /Q
Output LOW Voltage
Q, /Q
Output Voltage Swing
Q, /Q
Differential Output Voltage Swing
Q, /Q
See Figure 1a.
See Figure 1b.
Condition
Min
V
CC
–1.145
V
CC
–1.545
200
400
400
800
Typ
Max
V
CC
–0.895
V
CC
–1.295
Units
V
mV
mV
mV
AC ELECTRICAL CHARACTERISTICS
(9)
V
CC
= 2.5V
±5%
or 3.3V
±10%;
T
A
= –40°C to +85°C; R
L
= 50Ω to V
CC
–2V, unless otherwise noted.
Symbol
f
MAX
t
pd
Parameter
Maximum Operating Frequency
Condition
V
OUT
≥
400mV
V
IN
≥
100mV
NRZ Data
Clock
Propagation Delay
IN-to-Q
Min
10.7
7
70
125
115
Note 10
Note 11
Note 12
Note 13
(20% to 80%) At full output swing.
20
40
1
10
1
10
70
220
Typ
Max
Units
Gbps
GHz
ps
fs/°C
ps
RMS
ps
PP
ps
RMS
ps
PP
ps
t
pd
Tempco Differential Propagation Delay
Temperature Coefficient
t
JITTER
Data
Random Jitter (RJ)
Deterministic Jitter (DJ)
Clock
Cycle-to-Cycle Jitter
Total Jitter (TJ)
t
r
, t
f
Notes:
Output Rise/Fall Times
Q, /Q
8. The circuit is designed to meet the DC specifications shown in the above table after thermal equilibrium has been established.
9. High-frequency AC electricals are guaranteed by design and characterization.
10. Random jitter is measured with a K28.7 comma detect character pattern, measured at 2.5Gbps/3.2Gbps.
11. Deterministic jitter is measured at 2.5Gbps/3.2Gbps with both K28.5 and 2
23
–1 PRBS pattern.
12. Cycle-to-cycle jitter definition: the variation of periods between adjacent cycles, T
n
–T
n–1
where T is the time between rising edges of the output
signal.
13. Total jitter definition: with an ideal clock input of frequency
≤
f
MAX
, no more than one output edge in 10
12
output edges will deviate by more than the
specified peak-to-peak jitter value.
M9999-022007
hbwhelp@micrel.com or (408) 955-1690
4
Micrel, Inc.
Precision Edge
®
SY58602U
TIMING DIAGRAM
IN
/IN
t
pd
Q
/Q
DEFINITION OF SINGLE-ENDED AND DIFFERENTIAL SWINGS
V
IN,
V
OUT
400mV
(typical)
V
DIFF_IN
, V
DIFF_OUT
800mV (typical)
Figure 1a. Single-Ended Swing
Figure 1b. Differential Swing
INPUT AND OUTPUT STAGE INTERNAL TERMINATION
V
CC
V
CC
IN
50Ω
V
T
50Ω
/IN
GND
/Q
Q
Figure 2a. Simplified Differential Input Stage
Figure 2b. Simplified Differential Output Stage
M9999-022007
hbwhelp@micrel.com or (408) 955-1690
5
京公网安备 11010802033920号
EEWORLD
