SY88782L_10 Datasheet, PDF (4/8 Pages) Micrel Semiconductor – 3.3V, 1.25Gbps High-Current, Low-Power

Micrel, Inc.
SY88782L
Absolute Maximum Ratings⁽¹⁾
Operating Ratings⁽²⁾
Supply Voltage (V_IN) ...........................–0.5V to +4.0V
CML Input Voltage (V_IN).......... V_CC–1.2V to V_CC+0.5V
TTL Control Input Voltage (V_IN) ...................0V to V_CC
Lead Temperature (soldering, 20sec.) ...........+260°C
Storage Temperature (T_s)............... –65°C to +150°C
DC Electrical Characteristics
Supply Voltage (V_CC)...........................+3.0V to +3.6V
Ambient Temperature (T_A)................ –40°C to +85°C
Package Thermal Resistance⁽³⁾
QFN
(θ_JA) Still-air ............................................. 60°C/W
(Ψ_JB)......................................................... 33°C/W
T_A = –40°C to +85°C and V_CC = +3.0V to +3.6V, unless otherwise noted. Typical values are V_CC = +3.3V, T_A =
25°C, I_MOD = 60mA.
Symbol
ICC
Parameter
Power Supply Current
Condition
Modulation currents excluded
Min Typ Max Units
48
65⁽⁴⁾
mA
VMOD_MIN
Minimum Voltage Required at the
Driver Output (headroom) for
Proper Operation
0.6
V
RIN(DATA)
Input Resistance (DIN+, DIN-)
45
50
55
Ω
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
T_A = –40°C to +85°C and V_CC = +3.0V to +3.6V, unless otherwise noted. Typical values are V_CC = +3.3V, T_A =
25°C, I_MOD = 60mA.
Symbol
Parameter
Condition
Min Typ Max Units
Data Rate
IMOD
Modulation Current⁽⁵⁾
NRZ
AC-coupled
DC-coupled
0.05
10
10
1.25
90
70⁽⁶⁾
Gbps
mA
mA
IMOD_OFF
Modulation OFF Current
Current at MOD+ when the
device is disabled
750
A
tr
Output Current Rise Time
20% to 80%, IMOD = 60mA
tf
Output Current Fall Time
20% to 80%, IMOD = 60mA
Total Jitter
@1.25Gbps data rate
Pulse-Width Distortion
55
80
ps
55
80
ps
20
psPP
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 = 65mA 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.
January 2010
4
M9999-011310
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