SY88922_06 Datasheet, PDF (3/6 Pages) Micrel Semiconductor – SDH/SONET 2.5Gbps LASER DIODE DRIVER

Micrel, Inc.
ABSOLUTE MAXIMUM RATINGS⁽¹⁾
SY88922
Symbol
Rating
Value
Unit
VCC
Power Supply Voltage
0 to +7.0
V
VI
Input Voltage
0 to VCC
V
IO
Output Current
25
mA
TA
Operating Temperature Range
0 to +85
°C
Tstore
Storage Temperature Range
–55 to +125
°C
TJ
Maximum Operating Junction Temperature
+125
°C
Ptot
Power Dissipation
250
mW
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 ratlng conditions for extended periods
may affect device reliability.
OPERATIONING CONDITIONS⁽¹⁾
Symbol
Rating
VCC
Power Supply Voltage
REXT
Resistor to Dissipate Power
RSER
Laser Diode Serial Resistor
RSET
Resistor to Adjust Current
θ_JA
COUT
Thermal Resistance of Package to Ambient⁽²⁾
Capacitance on OUT + /OUT
Notes:
1. The voltage drop across REXT and RSER plus Laser Diode should not be greater than 2V.
2. Still air without heatsink.
Value
+4.5 to +5.5
10 to 50
0 to 50
1500 to 50,000
113
2.5 typical
Unit
V
Ω
Ω
Ω
°C/W
pf
DC ELECTRICAL CHARACTERISTICS
GND = 0V; VCC = +5.0V ±10%; TA = 0°C to + 85°C
TA = 0°C
Symbol
Parameter
Min. Typ. Max.
TA = +25°C
Min. Typ. Max.
TA = +85°C
Min. Typ. Max. Unit
VIH
Input HIGH Voltage VCC–1165 — VCC–880 VCC–1165 — VCC–880 VCC–1165 — VCC–880 mV
(DIN, /DIN, /EN)
VIL
Input LOW Voltage VCC–1810 — VCC–1475 VCC–1810 — VCC–1475 VCC–1810 — VCC–1475 mV
(DIN, /DIN, /EN)
VREF
IIL
Reference Voltage
Input LOW Current⁽¹⁾
(DIN, /DIN, /EN)
—
3.12
—
0.5
—
—
—
3.00
—
0.5
—
—
—
2.80
—
V
0.5
—
—
uA
IIH
Input HIGH Current
—
—
100
(DIN, /DIN, /EN)
ICC
Supply Current⁽²⁾
—
16
25
IOL
Output LOW Current
—
—
500
(/EN = HIGH)
—
—
100
—
16
25
—
—
500
—
—
100 uA
—
16
25
mA
—
—
500 uA
IOUT
Modulation Current
5
15
25
5
15
25
5
15
25
mA
IRSET
ARSET
Modulation Control
=IOUT/IRSET
0.125 — 0.625
30
38
44
0.125 —
30
38
0.625
44
0.125
—
0.625 mA
30
38
44
—
Notes:
1. VI = VIL(Min.)
2. IMOD = 25mA.
M9999-091906
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