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MF446 750 - 850 nm, 1.5 GHz PIN Photodiode
Data Sheet
September 2004
Ordering Information MF446 MF446 MF446 MF446 MF446 MF446 ST SMA FC SC PT TO-46 Package ST Housing SMA Housing FC Housing SC Housing Pig-Tail including 1m of 62.5/125 m multi-mode fiber -40 C to +85 C
Note:The rated Responsivity applies to all options.
Features
* * * 750-850 nm PIN Photodiode 1.5 GHz Bandwidth Designed for Single-mode and Multi-mode Fiber
Description
The very high speed and low capacitance of this GaAs PIN Photodiode makes it ideal for datacom and general purpose applications. Its double-lens optical system collects power from fibers with up to 100 mm without loss in responsivity and a reverse voltage of only 3.3 Volts makes interfacing to a preamplifier easy.
Applications
* * * * * Fast Ethernet Fibre Channel 1x, 2x Gigabit Ethernet Infiniband General Purpose
CATHODE
ANODE
CASE ANODE CATHODE
Bottom View
The diode chip is isolated from the case.
Figure 1 - Pin Diagram
Figure 2 - Functional Schematic
1
Zarlink Semiconductor Inc. Zarlink, ZL and the Zarlink Semiconductor logo are trademarks of Zarlink Semiconductor Inc. Copyright 2001-2004, Zarlink Semiconductor Inc. All Rights Reserved.
MF446
Optical and Electrical Characteristics - +25C Parameter Responsivity (Figures 3 and 4) (Table 1) Bandwidth Symbol R Min. 0.35 Typ. 0.45 Max. Unit A/W
Data Sheet
Test Condition VR=3.3 V, 5V =850 nm VR=3.3 V, 5V RL=50 VR=3.3 V, 5 V Fiber: 62.5/125 m Graded Index NA=0.275
fc
1.5
GHz
Capacitance (Figure 6) Dark Current
C Id
0.8 0.4
pF nA
VR=3.3 V, 5 V, f=1 MHz
Absolute Maximum Ratings Parameter Storage Temperature Operating Temperature Reverse Voltage Soldering Temperature (2 mm from the case for 10 sec.) Symbol Tstg Top VR Tsld Limit -55 to +125C -40 to +85C 30 V 260C
Thermal Characteristics Parameter Temperature Coefficient - Dark Current Symbol d1/dTj Min. Typ. 5 Max. Unit %/C
Typical Responsivity Core Diameter/Cladding Diameter Numerical Aperture 10/125 m 0.11 0.45 A/W 50/125 m 0.20 0.45 A/W 62.5/125 m 0.275 0.45 A/W
2
Zarlink Semiconductor Inc.
MF446
100
Data Sheet
r
80
z
Relative Responsivity (%)
r - optimal OC = 62.5 m
60
40
20
0 0.5 0.75 1 1.25 1.5 1.75 2 2.25 2.5 2.75 3 z - Axial Displacem ent of Fiber (m) ) (m m
Figure 3 - Relative Responsivity vs. z - Axial Displacement of Fiber
r
100
z
80 Relative Responsivity (%)
z - optimal OC = 62.5 m
60
40
20
0 0 10 20 30 40 50 60 70 80 90 100 r - Radial Displacem ent of Fiber ( m )
Figure 4 - Relative Responsivity vs. r - Radial Displacement of Fiber
3
Zarlink Semiconductor Inc.
MF446
Data Sheet
100 90 80 Relative Responsivity (%) 70 60 50 40 30 20 10 0 600
625
650
675
700
725
750
775
800
825
850
875
900
925
950
975 1000
Wavelength (nm )
Figure 5 - Relative Responsivity vs. Wavelength
2 1.75 1.5 Capacitance (pF) 1.25 1 0.75 0.5 0.25 0 0 1 2 3 4 5 6 7 8 9 10 Reverse Voltage (V)
Figure 6 - Capacitance vs. Reverse Voltage
4
Zarlink Semiconductor Inc.
BOTTOM VIEW ( 10 : 1 )
3,8 2,54 0,6
n1,17 + 0,05 (3x) n0,45 + 0,03 (3x) -
SIDE VIEW
13,460,76
0
0,04
45
R2,7
R0,2 max (4x)
3, 6
1, 0 2 0, 3
Lens n1.50.05 R0,4 max
NOTES:1. All dimensions in mm. 2. General tol. ISO-2768-mK. 3. Coating: Case: Ni 1,5-2,5 m. Header: Ni 2-3 m / Au min 1,32 m.
n4,7
0,3 max glass overmould (2x)
(c) Zarlink Semiconductor 2002. All rights reserved.
Package code Previous package codes
Drawing type
ISSUE ACN DATE
1
JS004 076R1 A
TB
Package drawing, TO-46 with lens Title
22-MAR-03
APPRD. TD/BE
JS004076
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TECHNICAL DOCUMENTATION - NOT FOR RESALE

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