MITEL MF799ST Datasheet

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 62.5/125µm

Fiber

Description

Used in combination with the
MF699, the MF-799 Duplex
Device is designed for WDM

(Wavelength Division Multiplex),
Datacom, Video Links, or Intra­Office 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 62.5/125µm fiber.

ST Assembly

MF799 ST

13329.11 1997-04-01

MF799 Datacom, Video Link, Intra-Office Telecom, WDM Duplex Device

Ordering Information

PART # RECEPTACLE

MF799 ST

-40°C to +85°C

MF799 Functional Diagram

ANODE

CATHODE

BOTTOM VIEW

CASE

MF799

LED

820nm

BOTTOM VIEW

CATHODE

PIN

1320nm

FIBER

DICHROIC

BEAMSPLITTER

BOTTOM VIEW

PIN

820nm

ANODEANODE

MF699

LED

1320nm

ANODE

CASE

CATHODE

BOTTOM VIEW

29

LED Optical & Electrical Characteristics (Case Temperature -25 to +70˚C)

Units

dBm

ns

MHz

nm
nm

V
µA
pF

Test Conditions

I

Peak

=60mA (Note 1, 2)
IF=60mA (Note 2)
IF=60mA (Note 2)
IF=60mA
IF=60mA
IF=60mA
VR=1V
VR=0V, f=1MHz

Max.

2

840

60

2.1
20

Min.

-19

800

Typ.

1.5
250
820

50

20

Symbol

P

fiber

trt

f

f

c

λ

p

∆λ

V

F

I

R

C

Parameter

Fiber-Coupled-Power (Fig 1)
Rise & Fall Time (10-90% no bias)
Bandwidth (3dBel)
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: 62.5/125µm 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 +70˚C)

Units

A/W

MHz

pF
nA

nA

Test Conditions

VR=5V λ=1320nm
(note 1)

VR=5V RL=50Ω
(note 1)
VR=5V f=1MHz
T

Case

=25˚C

T

Case

=70˚C

VR=5V I

LED

=0mA

VR=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: 62.5/125µm 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

dλ/dT

j

PIN Thermal Characteristics

Units

%/˚C
%/˚C

Max.Min. Typ.

5

-0.6

Symbol

dId/dT

j

dICr/dT

j

Parameter

Temperature Coefficient - Dark Current
Temperature Coefficient - Crosstalk Current

Datacom, Video Link, Intra-Office Telecom, WDM Duplex De vice MF799

Parameter

Thermal Resistance - Infinite Heat Sink
Thermal Resistance - On PC Board
Temperature Coefficient - Optical Power
Temperature Coefficient - Wavelength