Fiber Optic Receiver
Features
1.Uni-directional data transmission using plastic fiber
2.Signal transmission speed
:MAX. 6 Mbps (NRZ signal)
3.Operating voltage :4.75 to 5.25 V
4.TTL compatible
5.Suitable for MOF-T3K2 Transmitter
MOF-R3K2
Outline Dimensions
Recommended drilling as viewd from the soldering face
NOTES:
Tolerance is ±0.3mm unless otherwise noted.
@ T
A
=25
o
C
Symbol
V
cc
I
OH
I
OL
T
opr
T
stg
T
SOL
Rating
-0.5 to + 7
-1
5
-20 to +70
-30 to +80
260*
Unit
V
mA
mA
Absolute Maximum Ratings
Parameter
Supply voltage
High Level Output Current
Low Level Output Current
Operating temperature
Storage temperature
Soldering Temperature
* For 5s (1 times or less)
C
o
C
o
C
o
REV: A1
Unity Opto Technology Co., Ltd.
09/11/2001
1/4
Fiber Optic Receiver
Recommended Operating Conditions
Parameter
Symbol
V
cc
Operating supply voltage
Operating transfer rate
T
receiver input optical power level
Pc
MOF-R3K2
MIN.
4.75
0.1
-22
TYP.
5.0
---
---
MAX.
5.25
6
-14.5
Unit
V
Mbps
dBm
Recommended Connection Method
Fiber Optic Connector
insert
Fiber Optic
Receiving
Module
1
Less than 7mm
47µH
Vcc
0.1µF
2
3
GND
(Bottom view)
Vout
Electro-Optical Characteristics
Parameter
Dissipation current
High level output voltage
Low level output voltage
Rise time
Fall time
Low
→High
delay time
High
→Low
delay time
Pulse width distortion
Symbol
I
cc
V
OH
V
OL
t
r
t
f
t
pLH
t
pHL
∆
tw
Conditions
Refer to Fig. 1
Refer to Fig. 2
Refer to Fig. 2
Refer to Fig. 2
Refer to Fig. 2
Refer to Fig. 2
Refer to Fig. 2
Refer to Fig. 2
MIN. TYP.
---
20
2.7
4.4
---
0.2
---
20
---
20
---
---
---
---
-30
---
MAX. Unit
40
mA
---
V
0.4
V
40
ns
40
ns
180
ns
180
ns
+30
ns
REV: A1
Unity Opto Technology Co., Ltd.
09/11/2001
2/4
Fiber Optic Receiver
Fig. 1 Measuring Method of Optical Output Coupling with Fiber
Fiber optic cable
Standard transmitter
MOF-T3K2
V
in
V
CC
MOF-R3K2
MOF-R3K2
V
CC
GND
A
GND
V
OUT
D
5V
Ammeter V
CC
Input
6 Mbps NRZ, Duty 50% or 3 Mbps biphase mark PRBS signal
Notes (1)Vcc=5.0V (State of operating)
(2)To bundle up the standard fiber optic cable, make it into a loop with the diameter D=10cm or more.
(3)P
c
= -14.5 dBm
(4)Measured on an ammeter.
REV: A1
Unity Opto Technology Co., Ltd.
09/11/2001
3/4
Fiber Optic Receiver
Fig. 2 Measuring Method of Output Voltage and Pulse Response
Fiber optic cable
Standard transmitter
MOF-T3K2
V
CC
V
in
V
CC
GND
MOF-R3K2
MOF-R3K2
GND
V
OUT
V
CC
Input
5V
Oscilloscope
CH1
6 Mbps NRZ, Duty 50%
CH2
Test item
Test item
Low
→High
pulse delay time
High
→
Low pulse delay time
Rise time
Fall time
Pulse width distortion
Δtw
= t
PHL
- t
PLH
High level output voltage
Low level output voltage
Symbol
t
PLH
t
PHL
t
r
t
f
Standard transmitter
Input signal
(CH1)
50%
t
r
V
OH
t
f
Δtw
V
OH
V
OL
90%
Output signal
(CH2)
V
OL
t
PLH
t
PHL
50%
10%
REV: A1
Unity Opto Technology Co., Ltd.
09/11/2001
4/4
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