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SY88982L Datasheet(Hoja de datos) 3 Page - Micrel Semiconductor

No. de Pieza. SY88982L
Descripción  3.3V, 2.7Gbps High Current, Low Power Laser Driver for FP/DFB Lasers
Descarga  10 Pages
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Fabricante  MICREL [Micrel Semiconductor]
Página de inicio  http://www.micrel.com
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 3 page
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Micrel, Inc.
SY88982L
April 2005
3
M9999-0414505
hbwhelp@micrel.com or (408) 955-1690
Pin Description
Pin Name
Pin Number
Pin Function
1, 4, 7, 8, 13
GND
Ground. Ground and exposed pad must be connected to the plane of the most
negative potential.
2DIN+
Non-inverting data input. Internally terminated with 50 to a reference voltage.
3DIN–
Inverting data input. Internally terminated with 50 to a reference voltage.
5, 6
VCC
Supply Voltage. Bypass with a 0.1 F//0.01 F low ESR capacitor as close to VCC
pin as possible.
9, 10
MOD–
Inverted modulation current output. Outputs modulation current when input data is
negative.
11, 12
MOD+
Non-inverted modulation current output. Outputs modulation current when input
data is positive.
14
VREF
Reference Voltage. Install a 0.1 F capacitor between VREF and VCC.
15
IM_SET
Modulation current setting and control. The voltage applied to this pin will set the
modulation current. To be connected to the MIC3000/1 pin 24 (VMOD+). Input
impedance 25K .
16
/EN
A low level signal on this pin will enable the output stage of the driver. Internally
pulled down with 75K .
Truth Table
DIN+
DIN-
/EN
MOD+
(1)
MOD-
Laser Output
(2)
LH
L
H
L
L
HL
L
L
H
H
XX
H
H
L
L
Notes:
1. IMOD = 0 when MOD+ = H.
2. Assuming that the laser is tied to MOD+.




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