Microchip SY88982L Bedienungsanleitung


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SY88982L
3.3V, 2.7Gbps High Current, Lo- w-Power
Laser Driver for FP/DFB Lasers
December 2009 1 M9999 121009- -
A
hbwhelp@micrel.com -or (408) 955 1690
General Description
The SY88982L is a single 3.3V supply, low power
consumption, small form factor driver for
telecom/datacom applications using FP/DFB lasers
at data rates up to 2.7Gbps. The driver can deliver
modulation current up to 90mA, and the high
compliance voltage if offers, makes the part suitable
for high current operation (with the laser AC or DC- - -
coupled to it). This device is intended to be used
with Micrel’s MIC3003 Optical Transceiver
Management IC, which allows for both modulation
and bias current control and monitoring, automatic
power control, and temperature compensation.
All support documentation can be found on Micrel’s
web site at: www.micrel.com.
Features
• -2.4V minimum laser compliance voltage for high
current DC coupled applications-
• 48mA power supply current typical
• Operation up to 2.7Gbps
• Modulation current up to 90mA
• Designed for use with the MIC3003
• - - Laser may be DC or AC coupled
• -Small form factor 16 pin (3mm x 3mm) QFN
package
Applications
• -Multi rate LAN, MAN applications up to 2.7Gbps:
FC, GbE, SONET OC3/12/24/48 and SDH
STM1/4/8/16
• SFF, SFP modules
Markets
• Telecom, Datacom
________________________________________________________________
Typical Application
Laser DC-Coupled to the Driver
Laser AC-Coupled to the Driver
Micrel, Inc.
SY88982L
December 2009 2 M9999 121009- -
A
hbwhelp@micrel.com -or (408) 955 1690
Functional Block Diagram
Ordering Information(1)
Part Number Package Type Operating Range Package Marking Lead Finish
SY88982LMG 16 Indu -QFN s trial 982L with Pb-Free bar line indicator- - NiPdAu Pb Free
SY88982LMGTR
(2)
- s -QFN 16 Indu trial 982L with Pb Free bar line indicator- - NiPdAu Pb Free
Notes:
1. Contact factory for die availability. Dice are guaranteed at T
A = +25°C, DC Electricals only.
2. Tape and Reel.
Pin Conguration
16-Pin QFN
Micrel, Inc.
SY88982L
December 2009 3 M9999 121009- -
A
hbwhelp@micrel.com -or (408) 955 1690
Pin Description
Pin Number Pin Name Pin Function
1, 4, 7, 8, 13 GND Ground. Ground and exposed pad must be connected to the plane of the most negative
potential.
2 DIN+ Non-Inverting Input Data. Internally terminated with 50Ω to a reference voltage.
3 - DIN Inverting Input Data. Internally terminated with 50Ω to a reference voltage.
5, 6 VCC Supply Voltage. Bypass with a 0.1µF//0.01µF low ESR capacitor as close to VCC pin as
possible.
9, 10 Inverted Modulation Current Output. Provides modulation current when input data is - MOD
nega tive.
11, 12 Inverted Modulation Current Output. Provides modulation current when i -MOD+ Non nput data is
positive.
14 VREF Reference Voltage. Install a 0.1µF 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 MIC3003 pin 24 (VMOD+). Input impedance 25kΩ.
16 /EN A high level signal applied to this pin will disable the output stage of the driver. Internally
pulled down with 25kΩ resistor.
Truth Table
DIN+
DIN-
/EN
MOD+
MOD-
Laser Output
(2)
L H L H L L
H L L L H H
X X H H H L
Notes:
1. IMOD = 0 when MOD+ = H.
2. Assuming that the laser is tied to MOD+.


Produktspezifikationen

Marke: Microchip
Kategorie: Nicht kategorisiert
Modell: SY88982L

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