SY58013U [MICREL]
6GHz, 1:2 FANOUT BUFFER/TRANSLATOR w/400mV LVPECL OUTPUTS and INTERNAL INPUT TERMINATION; 6GHz的, 1 : 2扇出缓冲器/翻译W / 400mV的LVPECL输出和内部输入终端型号: | SY58013U |
厂家: | MICREL SEMICONDUCTOR |
描述: | 6GHz, 1:2 FANOUT BUFFER/TRANSLATOR w/400mV LVPECL OUTPUTS and INTERNAL INPUT TERMINATION |
文件: | 总9页 (文件大小:133K) |
中文: | 中文翻译 | 下载: | 下载PDF数据表文档文件 |
®
6GHz, 1:2 FANOUT BUFFER/TRANSLATOR
w/400mV LVPECL OUTPUTS and INTERNAL
INPUT TERMINATION
®
Precision Edge
SY58013U
FEATURES
■ Precision 1:2, 400mV LVPECL fanout buffer
®
Precision Edge
■ Guaranteed AC performance over temperature and
voltage:
DESCRIPTION
• > 6GHz f
clock
MAX
• < 80ps t /t times
r f
The SY58013U is a 2.5V/3.3V precision, high-speed, fully
differential 1:2 LVPECL fanout buffer. Optimized to provide
two identical output copies with less than 15ps of skew and
• < 250ps t
pd
• < 15ps max. skew
less than 10ps
total jitter, the SY58013U can process
(pk-pk)
■ Low jitter performance:
clock signals as fast as 6GHz or data patterns up to
10.7Gbps.
• < 10ps total jitter (clock)
PP
• < 1ps
random jitter (data)
RMS
The differential input includes Micrel’s unique, 3-pin input
termination architecture that interfaces to LVPECL, LVDS,
and CML differential signals, (AC- or DC-coupled) as small
as 100mV without any level-shifting or termination resistor
networks in the signal path. For AC-coupled input interface
applications, an on-board output reference voltage (V
• < 10ps deterministic jitter (data)
PP
■ Accepts an input signal as low as 100mV
■ Unique input termination and V pin accepts DC-
T
coupled and AC-coupled differential
inputs: LVPECL, LVDS and CML
REF
-
) is provided to bias the V pin. The outputs are 400mV
T
AC
■ 400mV LVPECL compatible outputs
■ Power supply 2.5V ±5% and 3.3V ±10%
■ –40°C to +85°C temperature range
LVPECL compatible, with extremely fast rise/fall times
guaranteed to be less than 80ps.
The SY58013U operates from a 2.5V ±5% supply or
3.3V ±10% supply and is guaranteed over the full industrial
temperature range (–40°C to +85°C). For applications that
require greater output swing or CML compatible outputs,
consider the SY58012U 1:2 fanout buffer with 800mV
LVPECL outputs, or the SY58011U 1:2 fanout buffer with
400mV CML outputs. The SY58013U is part of Micrel’s
■ Available in 16-pin (3mm × 3mm) MLF™ package
APPLICATIONS
■ All SONET and All GigE clock distribution
■ Fibre Channel clock and data distribution
■ Backplanes
®
high-speed, Precision Edge product line. Data sheets and
support documentation can be found on Micrel’s web site at
www.micrel.com.
■ Data distribution: OC-48, OC-48+FEC, XAUI
■ High-end, low-skew, multiprocessor synchronous
clock distribution
TYPICAL PERFORMANCE
FUNCTIONAL BLOCK DIAGRAM
2GHz Output
VCC = 3.3V
Q0
IN
/Q0
50Ω
VT
50Ω
/IN
Q1
/Q1
VREF-AC
TIME (70ps/div.)
2GHz with 100mV Input
Precison Edge is a registered trademark of Micrel, Inc.
MicroLeadFrame and MLF are trademarks of Amkor Technology, Inc.
Rev.: B
Amendment: /0
M9999-051105
hbwhelp@micrel.com or (408) 955-1690
1
Issue Date: May 2005
Precision Edge®
SY58013U
Micrel, Inc.
PACKAGE/ORDERING INFORMATION
Ordering Information(1)
Package
Type
Operating
Range
Package
Marking
Lead
Finish
16 15 14 13
Part Number
1
2
12
11
10
9
Q0
SY58013UMI
MLF-16
MLF-16
MLF-16
Industrial
Industrial
Industrial
013U
013U
Sn-Pb
Sn-Pb
IN
SY58013UMITR(2)
SY58013UMG(3)
VT
/Q0
/Q1
Q1
3
4
VREF-AC
/IN
013U with
Pb-Free bar-line indicator
Pb-Free
NiPdAu
SY58013UMGTR(2, 3) MLF-16
Industrial
013U with
Pb-Free bar-line indicator
Pb-Free
NiPdAu
5
6
7
8
Notes:
1. Contact factory for die availability. Dice are guaranteed at TA = 25°C, DC electricals only.
2. Tape and Reel.
16-Pin MLF™
3. Pb-Free package recommended for new designs.
PIN DESCRIPTION
Pin Number
Pin Name
Pin Function
1, 4
IN, /IN
Differential Input: This input pair is the signal to be buffered. Each pin is internally
terminated with 50Ω to the VT pin. Note that this input will default to an indeterminate state
if left open. See “Input Interface Applications” section.
2
3
VT
Input Termination Center-Tap: Each input terminates to this pin. The VT pin provides a
center-tap for each input (IN, /IN) to a termination network for maximum interface flexibility.
See “Input Interface Applications” section.
VREF-AC
Reference Output Voltage: This output biases to VCC –1.4V. It is used for AC-coupled
inputs (IN, /IN). Connect VREF-AC directly to the VT pin. Bypass with 0.01µF low ESR
capacitor to VCC. Maximum curent source or sink is 0.5mA. See “Input Interface
Applications” section.
5, 8, 13, 16
6, 7, 14, 15
VCC
Positive Power Supply: Bypass with 0.1µF//0.01µF low ESR capacitors as close to the
VCC pins as possible.
GND,
(Exposed Pad)
Ground. Exposed pad must be connected to a ground plane that is the same potential
as the ground pin.
12, 11
9, 10
Q0, /Q0,
Q1, /Q1
LVPECL Differential Output Pairs: Differential buffered output copy of the input signal. The
output swing is typically 400mV. Unused output pairs may be left floating with no impact on
jitter. See “LVPECL Output Termination” section.
M9999-051105
hbwhelp@micrel.com or (408) 955-1690
2
Precision Edge®
SY58013U
Micrel, Inc.
Absolute Maximum Ratings(Note 1)
Operating Ratings(Note 2)
Power Supply Voltage (V ) ....................... –0.5V to+4.0V
Power Supply Voltage (V ) ................. +2.375V to +3.60V
CC
CC
Input Voltage (V ) ......................................... –0.5V to V
Operating Temperature Range (T )........... –40°C to +85°C
CC
IN
A
Output Current (I
)
Package Thermal Resistance, Note 3
OUT
Continuous .............................................................50mA
Surge....................................................................100mA
MLF™ (θ
)
JA
Still-Air .............................................................60°C/W
V Current
T
500lpfm............................................................54°C/W
Source or sink current on V pin ........................±100mA
T
MLF™ (ψ ) .......................................................33°C/W
JB
Input Current
Source or sink current on (IN, /IN) ....................... ±50mA
V
Current
Source or sink current on V
REF
-AC, Note 4........ ±1.5mA
REF
Soldering, (20 sec.) ................................................... 260°C
Storage Temperature Range (T
) ....... –65 to +150°C
STORE
(Note 5)
DC ELECTRICAL CHARACTERISTICS
TA= –40°C to +85°C
Symbol
VCC
Parameter
Condition
Min
Typ
Max
3.60
90
Units
V
Power Supply Voltage
Power Supply Current
Input HIGH Voltage
Input LOW Voltage
Input Voltage Swing
Differential Input Voltage
In to VT Resistance
Output Reference Voltage
2.375
ICC
Max. VCC, no load
IN, /IN, Note 6
75
mA
V
VIH
VCC–1.6
VCC
VIH–0.1
1.7
VIL
IN, /IN
0
V
VIN
IN, /IN; see Figure 1a
IN, /IN; see Figure 1b
0.1
0.2
40
V
VDIFF_IN
RIN
3.4
V
50
60
Ω
VREF-AC
IN to VT
VCC –1.525 VCC –1.4 VCC –1.325
V
1.28
V
(Note 5)
LVPECL DC ELECTRICAL CHARACTERISTICS
VCC = 3.3V ±10% or VCC = 2.5 ±5%; RL= 50Ω to VCC–2V; TA= –40°C to 85°C, unless otherwise stated.
Symbol
VOH
Parameter
Condition
Min
Typ
Max
Units
V
Output HIGH Voltage
Output LOW Voltage
Output Voltage Swing
Q0, /Q0, Q1, /Q1
VCC–1.145 VCC–1.020 VCC–0.895
VCC–1.545 VCC–1.420 VCC–1.295
VOL
Q0, /Q0, Q1, /Q1
V
VOUT
Q0, /Q0, Q1, /Q1; see Figure 1a
200
400
400
800
mV
mV
VDIFF_OUT
Differential Output Voltage Swing Q0, /Q0, Q1, /Q1; see Figure 1b
Note 1. Permanent device damage may occur if ABSOLUTE MAXIMUM RATINGS are exceeded. This is a stress rating only and functional operation
is not implied at 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.
Note 2. The data sheet limits are not guaranteed if the device is operated beyond the operating ratings.
Note 3. Thermal performance assumes exposed pad is soldered (or equivalent) to the device’s most negative potential on the PCB.
Note 4. Due to the limited drive capability, use for input of the same package only.
Note 5. The circuit is designed to meet the DC specifications shown in the above table after thermal equilibrium has been established.
Note 6.
V
(min.) not lower than 1.2V.
IH
M9999-051105
hbwhelp@micrel.com or (408) 955-1690
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Precision Edge®
SY58013U
Micrel, Inc.
(Note 7)
AC ELECTRICAL CHARACTERISTICS
VCC = 2.5V ±5% or 3.3V ±10%; TA = –40°C to +85°C; RL = 50Ω to VCC–2V, unless otherwise stated.
Symbol
Parameter
Condition
Min
Typ
Max
Units
Gbps
GHz
ps
fMAX
Maximum Operating Frequency
NRZ Data
Clock
10
V
OUT ≥ 200mV
IN ≥ 100mV
6
tpd
Propagation Delay
V
100
180
4
250
15
tCHAN
tSKEW
tJITTER
Channel-to-Channel Skew
Part-to-Part Skew
Note 8
Note 9
ps
100
ps
Data
Random Jitter (RJ) Note 10
Deterministic Jitter (DJ) Note 11
1
10
psRMS
psPP
Clock
Cycle-to-Cycle Jitter Note 12
Total Jitter (TJ) Note 13
1
10
psRMS
psPP
tr, tf
Output Rise/Fall Time
20% to 80%, at full output swing
20
50
80
ps
Note 7. High frequency AC electricals are guaranteed by design and characterization.
Note 8. Skew is measured between outputs of the same bank under identical transitions.
Note 9. Skew is defined for two parts with identical power supply voltages at the same temperature and with no skew of the edges at the respective
inputs.
Note 10. RJ is measured with a K28.7 comma detect character pattern, measured at 10.7Gbps and 2.5Gbps/3.2Gbps.
23
Note 11. DJ is measured at 10.7Gbps and 2.5Gbps/3.2Gbps with both K28.5 and 2 –1 PRBS pattern
Note 12. Cycle-to-cycle jitter definition: The variation of periods between adjacent cycles, T –T
where T is the time between rising edges of the
n
n–1
output signal.
12
Note 13. Total jitter definition: With an ideal clock input of frequency ≤ f
, no more than one output edge in 10 output edges will deviate by more
MAX
than the specified peak-to-peak jitter value.
TIMING DIAGRAM
/IN
IN
/Q
Q
tpd
SINGLE-ENDED AND DIFFERENTIAL SWINGS
VIN,
VDIFF_IN
,
(Typ. 400mV)
VOUT
(Typ. 800mV)
VDIFF_OUT
Figure 1b. Differential Voltage Swing
Figure 1a. Single-Ended Voltage Swing
M9999-051105
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Precision Edge®
SY58013U
Micrel, Inc.
TYPICAL OPERATING CHARACTERISTICS
V
= 3.3V, GND = 0, V = 100mV, T = 25°C, unless otherwise stated.
CC
IN
A
Within-Device Skew vs.
Temperature
Frequency vs. Amplitude
10
9
8
7
6
5
4
3
2
1
0
450
400
350
300
250
-40 -20
0
20 40 60 80 100
0
1000 2000 3000 4000 5000 6000
FREQUENCY (MHz)
TEMPERATURE (°C)
Propagation Delay vs.
Input Voltage Swing
Propagation Delay vs.
Temperature
190
195
190
185
180
175
170
165
160
155
150
145
140
135
185
180
175
170
165
160
155
0
200 400 600 800 1000
INPUT VOLTAGE SWING (V)
-40 -20
0
20 40 60 80 100
TEMPERATURE (°C)
M9999-051105
hbwhelp@micrel.com or (408) 955-1690
5
Precision Edge®
SY58013U
Micrel, Inc.
FUNCTIONAL CHARACTERISTICS
V
= 3.3V, V = 0V, V = 100mV, T = 25°C, unless otherwise stated.
CC
EE
IN
A
5GHz Output
200MHz Output
TIME (600ps/div.)
TIME (25ps/div.)
7GHz Output
10.7Gbps Output
TIME (25ps/div.)
TIME (20ps/div.)
23
(2 –1 PRBS Pattern)
M9999-051105
hbwhelp@micrel.com or (408) 955-1690
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Precision Edge®
SY58013U
Micrel, Inc.
INPUT STAGE
VCC
IN
GND
50Ω
50Ω
VT
/IN
Figure 2. Simplified Differential
Input Buffer
INPUT INTERFACE APPLICATIONS
VCC
VCC
VCC
VCC
VCC
VCC
IN
IN
IN
LVPECL
LVPECL
LVDS
/IN
/IN
/IN
SY58013U
SY58013U
Rpd
Rpd
SY58013U
VT
VT
NC
NC
VT
VREF-AC
0.01µF
Rpd
NC
VREF-AC
VREF-AC
0.01µF
VCC
Note:
Note:
For VCC = 2.5V, Rpd = 50Ω
For VCC = 3.3V, Rpd = 100Ω
For VCC = 2.5V system, Rpd = 19Ω
For VCC = 3.3V system, Rpd = 50Ω
Figure 3c. LVDS
Input Interface
Figure 3a. DC-Coupled
LVPECL Input Interface
Figure 3b. AC-Coupled
LVPECL Input Interface
VCC
VCC
VCC
VCC
IN
IN
CML
CML
/IN
/IN
SY58013U
SY58013U
VT
NC
NC
VT
VREF-AC
VREF-AC
0.01µF
VCC
Figure 3e. AC-Coupled CML
Input Interface
Figure 3d. DC-Coupled
CML Input Interface
(option: may connect VT to VCC
)
M9999-051105
hbwhelp@micrel.com or (408) 955-1690
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Precision Edge®
SY58013U
Micrel, Inc.
OUTPUT TERMINATION RECOMMENDATIONS
LVPECL outputs have very low output impedance (open
emitter), and small signal swing which results in low EMI
(electro-magnetic interference). The LVPECL is ideal for
driving 50Ω and 100Ω controlled impedance transmission
lines. In addition, LVPECL is compatible for driving standard
PECL inputs since PECL inputs require only 100mV input
swing. Further, there are several techniques in terminating
the LVPECL outputs, as shown in Figure 5 through 7.
+3.3V
+3.3V
+3.3V
VT = VCC —1.3V
R1
130Ω
R1
130Ω
R4
+3.3V
+3.3V
1kΩ
R1
130Ω
R1
130Ω
Q
+3.3V
+3.3V
ZO = 50Ω
ZO = 50Ω
ZO = 50Ω
/Q
R3
1.6kΩ
VT = VCC —2V
R2
82Ω
R2
82Ω
R2
82Ω
R2
82Ω
VT = VCC —2V
Figure 7. Terminating Unused I/O
Figure 5. Parallel Termination–Thevenin Equivalent
Note 1. Unused output (/Q) must be terminated to balance the output.
Note 1. For +2.5V systems: R1 = 250Ω, R2 = 62.5Ω
Note 2. For +3.3V systems: R1 = 130Ω, R2 = 82Ω
Note 2. For +2.5V systems: R1 = 250Ω, R2 = 62.5Ω, R3 = 1.25kΩ,
R4 = 1.2kΩ.
For +3.3V systems: R1 = 130Ω, R2 = 82Ω, R3 = 1kΩ, R4 = 1.6kΩ.
Note 3. Unused output pairs (Q and /Q) may be left floating.
+3.3V
+3.3V
Z = 50Ω
Z = 50Ω
50Ω
50Ω
source
destination
C1
50Ω
R
b
0.01µF
(optional)
Figure 6. Three-Resistor “Y–Termination”
Note 1. Power-saving alternative to Thevenin termination.
Note 2. Placeterminationresistorsasclosetodestinationinputsaspossible.
Note 3.
R resistor sets the DC bias voltage, equal to V .
b T
For +2.5V systems R = 39Ω.
b
For +3.3V systems R = 46Ω to 50Ω.
b
Note 4. C1 is an optional bypass capacitor intended to compensate for any
t /t mismatches.
r
f
RELATED MICREL PRODUCTS AND SUPPORT DOCUMENTATION
Part Number
Function
Data Sheet Link
SY58011U
7GHz, 1:2 CML Fanout Buffer/Translator
With Internal I/O Termination
http://www.micrel.com/product-info/prod/ucts/sy58011u.shtml
SY58012U
SY58013U
5GHz, 1:2 LVPECL Fanout Buffer/Translator With
Internal Input Termination
http://www.micrel.com/product-info/products/sy58012u.shtml
http://www.micrel.com/product-info/products/sy58013u.shtml
www.amkor.com/products/notes_papers/MLF_AppNote_0902.pdf
http://www.micrel.com/product-info/as/solutions.shtml
6GHz, 1:2 Fanout Buffer/Translator w/400mV
LVPECL Outputs and Internal Input Termination
16-MLF™ Manufacturing Guidelines
Exposed Pad Application Note
M-0317
HBW Solutions
M9999-051105
hbwhelp@micrel.com or (408) 955-1690
8
Precision Edge®
SY58013U
Micrel, Inc.
16 LEAD MicroLeadFrame™ (MLF-16)
Package
EP- Exposed Pad
Die
CompSide Island
Heat Dissipation
Heat Dissipation
VEE
Heavy Copper Plane
Heavy Copper Plane
VEE
PCB Thermal Consideration for 16-Pin MLF™ Package
(Always solder, or equivalent, the exposed pad to the PCB)
Package Notes:
Note 1. Package meets Level 2 qualification.
Note 2. All parts are dry-packaged before shipment.
Note 3. Exposed pads must be soldered to a ground for proper thermal management.
MICREL, INC. 2180 FORTUNE DRIVE SAN JOSE, CA 95131 USA
TEL + 1 (408) 944-0800 FAX + 1 (408) 474-1000 WEB http://www.micrel.com
The information furnished by Micrel in this datasheet is believed to be accurate and reliable. However, no responsibility is assumed by Micrel for its use.
Micrel reserves the right to change circuitry and specifications at any time without notification to the customer.
Micrel Products are not designed or authorized for use as components in life support appliances, devices or systems where malfunction of a product can
reasonably be expected to result in personal injury. Life support devices or systems are devices or systems that (a) are intended for surgical implant into
the body or (b) support or sustain life, and whose failure to perform can be reasonably expected to result in a significant injury to the user. A Purchaser’s
use or sale of Micrel Products for use in life support appliances, devices or systems is at Purchaser’s own risk and Purchaser agrees to fully indemnify
Micrel for any damages resulting from such use or sale.
© 2005 Micrel, Incorporated.
M9999-051105
hbwhelp@micrel.com or (408) 955-1690
9
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