28
Applications
Ethernet 10 or 100Mbps
Token Ring
Fibre Channel 266Mbps
FDDI
ATM-SDH/SONET 155Mbps
Intra-Office Telecom
WDM Applications
Features
Full Duplex Communication
Over One Fiber
Dual Wavelengths
820/1300nm
Very Small Size
Very Low Internal Crosstalk
Packaged in Industry-
Standard ST Receptacle
Designed for 62.5/125m
Fiber
Description
Used in combination with the
MF699, the MF-799 Duplex
Device is designed for WDM
(Wavelength Division Multiplex),
Datacom, Video Links, or Intra-
Office Telecom Applications. It
emits optical power at 820nm
and detects incoming optical
power at 1320nm, allowing full
Duplex Communication over
one single fiber.
The MF799 uses dichroic
(wavelength-selective)
beamsplitters for maximum
power budget and minimum
crosstalk. Minimum internal
crosstalk is achieved by the
use of wavelength-selective
Detectors. The long wavelength
path meets requirements for
FDDI (ANSI X3T9.5 and ATM
155Mbps.
The MF799 is designed for
multi-mode fiber and optimized
for 62.5/125m fiber.
ST Assembly
MF799 ST
DICHROIC
BEAMSPLITTER
LED
1320nm
PIN
1320nm
LED
820nm
PIN
820nm
FIBER
MF799
MF699
BOTTOM VIEW
BOTTOM VIEW
BOTTOM VIEW
ANODE
ANODE
CATHODE
ANODE
CASE
CATHODE
BOTTOM VIEW
ANODE
CASE
CATHODE
13329.11 1997-04-01
MF799
Datacom, Video Link, Intra-Office Telecom, WDM Duplex Device
Ordering Information
PART #
RECEPTACLE
MF799
ST
-40C to +85C
MF799 Functional Diagram
29
LED Optical & Electrical Characteristics (Case Temperature -25 to +70C)
Units
dBm
ns
MHz
nm
nm
V
A
pF
Test Conditions
I
Peak
=60mA
(Note 1, 2)
I
F
=60mA
(Note 2)
I
F
=60mA
(Note 2)
I
F
=60mA
I
F
=60mA
I
F
=60mA
V
R
=1V
V
R
=0V, f=1MHz
Max.
2
840
60
2.1
20
Min.
-19
800
Typ.
1.5
250
820
50
20
Symbol
P
fiber
t
r
t
f
f
c
p
V
F
I
R
C
Parameter
Fiber-Coupled-Power (Fig 1)
Rise & Fall Time (10-90% no bias)
Bandwidth (3dB
el
)
Peak Wavelength
Spectral Width (FWHM)
Forward Voltage (Fig 3)
Reverse Current
Capacitance
Note 1: Average power at 10MHz/50% duty cycle. Measured at the exit of 100m of fiber. Note 2: 62.5/125m graded index fiber (NA=0.275).
Absolute Maximum Ratings*
Units
C
C
mW
mA
mA
V
V
C
Max.
+85
+85
250
110
180
1.5
20
260
Min.
-40
-40
Symbol
T
stg
T
op
P
tot
I
F
I
FRM
V
RL
V
RP
T
sld
Parameter
Storage Temperature
Operating Temperature (Fig 2)
LED Power Dissipation (Fig 2)
LED Continuous Forward Current (f
10kHz)
LED Peak Forward Current
(Duty cycle
50%, f
1MHz)
LED Reverse Voltage
PIN Reverse Voltage
Solder Temperature (Note 1)
*Exceeding these values may cause permanent damage. Functional operation under these conditions is not implied. Note 1: 2mm from the case for 10s.
PIN Optical & Electrical Characteristics (Case Temperature -25 to +70C)
Units
A/W
MHz
pF
nA
nA
Test Conditions
V
R
=5V
=1320nm
(note 1)
V
R
=5V R
L
=50
(note 1)
V
R
=5V f=1MHz
T
Case
=25C
T
Case
=70C
V
R
=5V I
LED
=0mA
V
R
=5V I
LED
=60mA
(note 2)
Max.
5
100
Min.
0.5
500
Typ.
1.6
75
Symbol
R
f
c
C
I
d
I
Cr
Parameter
Responsivity (Fig 4)
Bandwidth
Capacitance (Fig 5)
Dark Current
Crosstalk Current
Note 1: 62.5/125m graded index fiber (NA=0.275) Note 2: Internal crosstalk with ceramic ferrule inserted but no power from the fiber. Total Current = Dark
Current + Crosstalk Current.
LED Thermal Characteristics
Units
C/W
C/W
%/C
nm/C
Max.
200
300
Min.
Typ.
-0.6
0.3
Symbol
R
thjc
R
thjb
dP/dT
j
d
/dT
j
PIN Thermal Characteristics
Units
%/C
%/C
Max.
Min.
Typ.
5
-0.6
Symbol
dI
d
/dT
j
dI
Cr
/dT
j
Parameter
Temperature Coefficient - Dark Current
Temperature Coefficient - Crosstalk Current
Datacom, Video Link, Intra-Office Telecom, WDM Duplex Device
MF799
Parameter
Thermal Resistance - Infinite Heat Sink
Thermal Resistance - On PC Board
Temperature Coefficient - Optical Power
Temperature Coefficient - Wavelength
30
Figure 5
Figure 1
Figure 2
Figure 3
Figure 4
mA
200
100
0
0
1
2
3
V
0
20
40
60
80
100
%
0
40
80
120
160
200
mA
RELA
TIVE FIBER-COUPLED PO
WER
50% DUTY CYCLE
DC
HEAT SINKED
800
1000
1800
nm
0
100
%
1300
1500
900
1100 1200
1400
1600 1700
50
0
2.0
4.0
pF
0
5
10 V
REVERSE VOLTAGE
CAP
A
CIT
ANCE
mW
300
200
100
0
0
50
100
150 C
ON PC BOARD
INFINITE
HEAT SINK
FORWARD CURRENT
MAX. ELECTRICAL POWER DISSIPATION
OPERATING TEMPERATURE
FORWARD CURRENT
FORWARD VOLTAGE
RELATIVE RESPONSIVITY
WAVELENGTH
MF799
Datacom, Video Link, Intra-Office Telecom, WDM Duplex Device
31
MF799 Mechanical Data
MARKING/ SLOT SIDE
12.7
2.5
5.4
LED
PIN DIODE
21
max. 1
1.4
4.1 r0.3
7.89 0.03
0.006
FIBER
END
MATING FERRULE
(not included)
2.5
+0
-0.004
2.502
+0.01
0
3.9
6.8
min. 12
9.6
2-56 UNC - 2B
3/8" - 32 UNEF
20.1
9.5
MF799 Packaging Hardware
9.53
12.70
1.65
0.46
10.41
14.27
HEX-NUT
WASHER
3/8 - 32 UNEF
2B THREAD
Note: The LED chip is isolated from the case. All dimensions in mm.
Datacom, Video Link, Intra-Office Telecom, WDM Duplex Device
MF799
M Mitel (design) and ST-BUS are registered trademarks of MITEL Corporation
Mitel Semiconductor is an ISO 9001 Registered Company
Copyright 1999 MITEL Corporation
All Rights Reserved
Printed in CANADA
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