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Part: ML6633
Category:
Interface and Interconnect
Description: High Speed Fiber Optic Led Driver
Company: Micro Linear
Datasheet: Download ML6633 datasheet File size : 123 kB
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Datasheet text preview:
September 1998
ML6633* High Speed Fiber Optic LED Driver
GENERAL DESCRIPTION
The ML6633 is a high speed fiber optic LED driver suited for networking applications up to 200 Mbps. The part is capable of driving up to 82mA of current through a fiber optic LED from an ECL level input signal. Its efficient output stage provides a high current that can be programmed for accurate absolute output level which insures precise launch power. The LED driver's output stage provides a fast well matched rise and fall time through a unique differential output stage. The ML6633 high speed fiber optic LED driver is implemented in BiCMOS process and is available in an 8-pin SOIC package.
FEATURES
n Data rates up to 200Mbps n Current driven output for accurate launch power n Programmable output current from 20mA to 82mA n High Efficiency Output Stage n Low EMI/RFI Noise n ECL inputs n Industrial temperature version available n May be used with ML6622 quantizer
APPLICATIONS
n FDDI n Fast Ethernet, 100BASE-FX n ATM (SONET), 155Mbps n Proprietary high-speed fiber optic data links
BLOCK DIAGRAM
*Some Packages Are Obsolete
ECLP 2 ECLN 3 8 VCC + BUFFER + DRIVER
IOUT 7 RTSET 6
REF GND 5
1
ML6633
PIN CONNECTION
ML6633 8-Pin SOIC (S08)
NC ECLP ECLN NC 1 2 3 4 8 7 6 5 VCC IOUT RTSET GND
TOP VIEW
PIN DESCRIPTION
PIN NAME DESCRIPTION PIN NAME DESCRIPTION
1 2 3 4 5
NC ECLP ECLN NC GND
No Connect Positive ECL data input controls signal to the LED Negative ECL data input No Connect
6
RTSET
Output current programming pin. Connect a resistor of value 2/ILED from this pin to ground to set the high LED output current Fiber optic LED drive pin. Connect the LED between this pin and VCC 5V power supply
7 8
IOUT VC C
Negative power supply ground
2
ML6633
ABSOLUTE MAXIMUM RATINGS
Absolute maximum ratings are those values beyond which the device could be permanently damaged. Absolute maximum ratings are stress ratings only and functional device operation is not implied. VCC ..... GND 0.3V to 6V Input Pin Voltages ........... GND 0.3V to VCC +0.3V LED Output Current (IOUT) ... 82mA Peak DC Output Current (IOUT) ..... 82mA Storage Temperature ...... 65°C to +150ºC Lead Temperature (Soldering 10 sec) ..... 260ºC Thermal Resistance (JA) .. 160ºC/W
OPERATING CONDITIONS
Temperature Range ML6633CS .... 0ºC to 70ºC ML6633IS ........ 40ºC to 85ºC
ELECTRICAL CHARACTERISTICS
Unless otherwise specified, VCC = 5V ± 5%, RTSET = 26.1 ± 1%, TA = Operating Temperature Range, (Note 1)
SYMBOL ICC IL E D H PARAMETER Supply Current LED Current Accuracy (IOUT) High C Suffix I Suffix ILEDL tR tF tPLH tPHL tPWD IECL
Note 1:
CONDITIONS
MIN
TYP
MAX 40+IOUT
UNITS mA mA mA mA ns ns ns ns ns µA
70 65
75 75
82 82 0.1 2 2
Low Rise Time (IOUT) Fall Time (IOUT) Propagation Delay (IOUT) Low to High High to Low Pulse Width Distortion (IOUT) ECL Input Current
10 10 0.5 20
Limits are guaranteed by 100% testing, sampling, or correlation with worst-case test conditions.
3
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