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SY88147DL Datasheet(PDF) 5 Page - Micrel Semiconductor

Part No. SY88147DL
Description  3.3V, 1.25Gbps PECL Limiting Post Amplifier w/High Gain TTL Loss-of-Signal
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Maker  MICREL [Micrel Semiconductor]
Homepage  http://www.micrel.com
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SY88147DL Datasheet(HTML) 5 Page - Micrel Semiconductor

 
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Micrel, Inc.
SY88147DL
February 2007
5
M9999-021207-B
hbwhelp@micrel.com or (408) 955-1690
AC Electrical Characteristics
VCC = 3.0V to 3.6V; RLOAD =50 to VCC–2V; TA = –40°C to +85°C.
Symbol
Parameter
Condition
Min
Typ
Max
Units
tr, tf
Output Rise/Fall Time
(20% to 80%)
Note 4
260
ps
tJITTER
Deterministic
Random
Note 5
Note 6
15
5
psPP
psRMS
VID
Differential Input Voltage Swing
Figure 1
5
1800
mvPP
VOD
Differential Output Voltage
Swing
VID > 18mVPP Figure 1
1500
mvPP
TOFF
LOS Release Time
2
10
µs
TON
LOS Assert Time
2
10
µs
LOSAL
Low LOS Assert Level
RLOSLVL = 15kΩ, Note 8
2.3
mVPP
LOSDL
Low LOS De-assert Level
RLOSLVL = 15kΩ, Note 8
3.4
mVPP
HYSL
Low LOS Hysteresis
RLOSLVL = 15kΩ, Note 7
3.4
dB
LOSAM
Medium LOS Assert Level
RLOSLVL = 5kΩ, Note 8
4.2
mVPP
LOSDM
Medium LOS De-assert Level
RLOSLVL = 5kΩ, Note 8
6.2
mVPP
HYSM
Medium LOS Hysteresis
RLOSLVL = 5kΩ, Note 7
2
3.4
4.5
dB
LOSAH
High LOS Assert Level
RLOSLVL = 100Ω, Note 8
10.8
mVPP
LOSDH
High LOS De-assert Level
RLOSLVL = 100Ω, Note 8
16.4
mVPP
HYSH
High LOS Hysteresis
RLOSLVL = 100Ω, Note 7
2
3.6
4.5
dB
B-3dB
3dB Bandwidth
1
GHz
AV(Diff)
Differential Voltage Gain
42
dB
S21
Single-ended Small-Signal Gain
30
36
dB
Notes:
4. Amplifier in limiting mode. Input is a 200MHz square wave.
5. Deterministic jitter measured using 1.25Gbps K28.5 pattern, VID = 10mVPP.
6. Random jitter measured using 1.25Gbps K28.7 pattern, VID = 10mVPP.
7. This specification defines electrical hysteresis as 20log (LOS De-assert/LOS Assert). The ratio between optical hysteresis and electrical
hysteresis is found to vary between 1.5 and 2 depending on the level of received optical power and ROSA characteristics. Based on that ratio,
the optical hysteresis corresponding to the electrical hysteresis range 2dB-4.5dB, shown in the AC characteristics table, will be 1dB-3dB.
8. See “Typical Operating Characteristics” for a graph showing how to choose a particular RLOSLVL for a particular LOS assert and its associated
de-assert amplitude.


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