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SY88782L Datasheet(PDF) 4 Page - Micrel Semiconductor

Part No. SY88782L
Description  3.3V, 1.25 Gbps HIgh Current, Low Power Laser Driver for Datacom Telecom Applications
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Manufacturer  MICREL [Micrel Semiconductor]
Direct Link  http://www.micrel.com
Logo MICREL - Micrel Semiconductor

SY88782L Datasheet(HTML) 4 Page - Micrel Semiconductor

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Micrel, Inc.
SY88782L
February 2005
4
M9999-021005
hbwhelp@micrel.com or (408) 955-1690
Absolute Maximum Ratings
(1)
Supply Voltage (VIN) ...........................–0.5V to +4.0V
CML Input Voltage (VIN).......... VCC–1.2V to VCC+0.5V
TTL Control Input Voltage (VIN) ...................0V to VCC
Lead Temperature (soldering, 20sec.) ...........+260°C
Storage Temperature (Ts)............... –65°C to +150°C
Operating Ratings
(2)
Supply Voltage (VCC)...........................+3.0V to +3.6V
Ambient Temperature (TA)................ –40°C to +85°C
Package Thermal Resistance
(3)
MLF™
(
θJA) Still-air ............................................. 60°C/W
(
ψJB)......................................................... 33°C/W
DC Electrical Characteristics
TA = –40°C to +85°C and VCC = +3.0V to +3.6V, unless otherwise noted. Typical values are VCC = +3.3V, TA = 25°C,
IMOD = 60mA.
Symbol
Parameter
Condition
Min
Typ
Max
Units
ICC
Power Supply Current
Modulation currents excluded
44
60
(4)
mA
VMOD_MIN
Minimum Voltage Required at the
Driver Output (headroom) for
Proper Operation
0.7
V
RIN(DATA)
Input Resistance (DIN+, DIN-)
45
50
55
VID
Differential Input Voltage Swing
200
2400
mVpp
/EN Low
0.8
V
/EN High
2
V
RIN (IMOD_SET)
IM_SET Input Resistance
25
kΩ
VIM_SET
Voltage Range on IM_SET Pin
IMOD range 10mA to 90mA
1.2
V
AC Electrical Characteristics
TA = –40°C to +85°C and VCC = +3.0V to +3.6V, unless otherwise noted. Typical values are VCC = +3.3V, TA = 25°C,
IMOD = 60mA.
Symbol
Parameter
Condition
Min
Typ
Max
Units
Data Rate
NRZ
0.05
1.25
Gbps
IMOD
Modulation Current
(5)
AC-coupled
10
90
mA
DC-coupled
10
70
(6)
mA
IMOD_OFF
Modulation OFF Current
Current at MOD+ when the
device is disabled
750
µA
tr
Output Current Rise Time
20% to 80%, IMOD = 60mA
80
ps
tf
Output Current Fall Time
20% to 80%, IMOD = 60mA
80
ps
Total Jitter
@1.25Gbps data rate
20
psPP
Pulse-Width Distortion
20
ps
Notes:
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.
2. The data sheet limits are not guaranteed if the device is operated beyond the operating ratings.
3. Package Thermal Resistance assumes exposed pad is soldered (or equivalent) to the devices most negative potential on the PCB.
ψJB
uses a 4-layer and
θJA in still air unless otherwise stated.
4. ICC = 60mA for worst-case conditions with IMOD = 90mA, TA = +85°C, VCC = 3.6V.
5. Load = 15Ω.
6. Assuming VCC = 3.0V, Laser bandgap voltage = 1V, laser package inductance = 1nH, laser equivalent series resistor = 5Ω, and damping
resistor = 10Ω.


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