Features
Applications
l
Data transmission in FA or OA applications subject to large
amounts of electro magnetic noise
l
High-speed, short distance data transmission
l
Burst data transmission
L E D / P H O T O I C
Red LED/Photo IC for optical link
For 50 Mbps optical link
L7140-10/S7141-10
l
Peak emission wavelength: 650 nm
l
High output power
l
High-speed response
l
DC to 50 Mbps data transmission
l
Miniature size due to monolithic IC structure
l
Designed to be used with L7140-10
l
Digital output
l
Inversion logic
L7140-10
S7141-10
Vcc
SIGNAL INPUT
1 14
2
7
74ACT08
3
0.1
m
F
0.1
m
F
R2
L7140-10
R1
C1
1
2
3
4
5 ns/div.
s Output optical waveform
definition
80 %
20 %
tr
tf
KLEDC0015EB
s L7140-10 output optical
waveform example
KLEDC0014EB
* This is merely an example of drive circuit and not for actual large-
volume production purposes.
KLEDC0019EA
s Absolute maximum ratings (Ta=25
C)
Parameter
Symbol
Value
Unit
Reverse voltage
V
R
5
V
L7140-10
Forward current
I
F
40
mA
Power supply
Vcc
-0.5 to +7
V
S7141-10
Output current
Ioh
10
mA
Power dissipation *
1
P
250
mW
Operating temperature
Topr
-10 to +70
C
Storage temperature
Tstg
-40 to +85
C
Soldering
-
230 C, 5 s, at least 1.5 mm away from package surface
-
*1: Derate power dissipation at a rate of 1.75 m W /C above Ta=25 C
s Electrical and optical characteristics (L7140-10) (Ta=25
C)
Parameter
Symbol
Condition
Min.
Typ.
Max.
Unit
Data rate
f
D
Driven by recommended circuit
DC
-
50
Mbps
Forward voltage
V
F
I
F
=20 mA
-
1.9
2.3
V
Reverse current
I
R
V
R
=5 V
-
-
10
A
I
F
=10 mA *
2
-10
-
-
Fiber coupled optical power
Po
I
F
=20 mA *
2
-7
-
-
dBm
Peak wavelength
p
I
F
=20 mA
-
650
-
nm
Spectral half width (FW HM)
I
F
=20 mA
-
20
-
nm
Rise time at pulse drive
tr
I
F
=20 mA, driven by recommended circuit *
3
-
-
8
ns
Fall time at pulse drive
tf
I
F
=20 mA, driven by recommended circuit *
3
-
-
8
ns
*2: Output from a 1 meter long plastic fiber (GH4001 made by Mitsubishi Rayon) set close to the m olded lens.
*3: Output optical waveform is defined by the waveform shown below.
s Drive circuit example
(R1=300
, R2=750
, C1=77 pF)
HAMAMATSU PHOTONICS K.K., Solid State Division
1126-1 Ichino-cho, Hamamatsu City, 435-8558 Japan, Telephone: (81) 053-434-3311, Fax: (81) 053-434-5184, http://www.hamamatsu.com
U.S.A.: Hamamatsu Corporation: 360 Foothill Road, P.O.Box 6910, Bridgewater, N.J. 08807-0910, U.S.A., Telephone: (1) 908-231-0960, Fax: (1) 908-231-1218
Germany: Hamamatsu Photonics Deutschland GmbH: Arzbergerstr. 10, D-82211 Herrsching am Ammersee, Germany, Telephone: (49) 08152-3750, Fax: (49) 08152-2658
France: Hamamatsu Photonics France S.A.R.L.: 8, Rue du Saule Trapu, Parc du Moulin de Massy, 91882 Massy Cedex, France, Telephone: 33-(1) 69 53 71 00, Fax: 33-(1) 69 53 71 10
United Kingdom: Hamamatsu Photonics UK Limited: 2 Howard Court, 10 Tewin Road, Welwyn Garden City, Hertfordshire AL7 1BW, United Kingdom, Telephone: (44) 1707-294888, Fax: (44) 1707-325777
North Europe: Hamamatsu Photonics Norden AB: Smidesvgen 12, SE-171 41 Solna, Sweden, Telephone: (46) 8-509-031-00, Fax: (46) 8-509-031-01
Italy: Hamamatsu Photonics Italia S.R.L.: Strada della Moia, 1/E, 20020 Arese, (Milano), Italy, Telephone: (39) 02-935-81-733, Fax: (39) 02-935-81-741
Information furnished by HAMAMATSU is believed to be reliable. However, no responsibility is assumed for possible inaccuracies or omissions.
Specifications are subject to change without notice. No patent rights are granted to any of the circuits described herein. 2001 Hamamatsu Photonics K.K.
Red LED/Photo IC for optical link
L7140-10/S7141-10
Cat. No. KPIC1039E04
Jul. 2001 DN
5.0
4.5 0.3
(INCLUDING BURR)
5.2 0.3
(INCLUDING BURR)
0.5
1.27
(SPECIFIED AT THE LEAD ROOT)
1.27
1.27
0.4
1.4
(2.15)
(1.5)
5.7 0.4
4.3
(0.9)
10
10
5.0
Lens tip does not project over surface B.
Tolerance unless otherwise
noted: 0.1, 2
Shaded area indicates burr.
Values in parentheses indicate
reference value.
(0.9)
L7140-10
PIN No.
S7141-10
GND
OUT
GND
Vcc
CATHODE
CATHODE
ANODE
CATHODE
1.77
0.97
0.69
10
(0.9)
4.3
0.25
10
1.8
Detail of part A
Surface B
0.25
1.24
1.8
0.66
0.2
A
1.8 V
1.5 V
1.2 V
tr
tf
pw
T = pw1 - pw
s Input optical waveform definition
pw1
tr=2 ns
tf=5 ns
80 %
50 %
20 %
s Output optical waveform definition
5 ns/div.
s An evaluation kit M7647 consisting of L7140-10,
S7141-10 and POF is also available.
KPICC0023EB
KPICC0022EA
s S7141-10 output waveform example
(Input light is referenced by drive circuit
on front page)
(Ta=25 C, Pi= -16 dBm, Vcc=5.0 V)
KPICC0068EA
s Electrical and optical characteristics (S7141-10) (Ta=25
C)
Parameter
Symbol
Condition
Min.
Typ.
Max.
Unit
Data rate
f
D
DC
50
Mbps
Supply voltage
Vcc
4.75
-
5.25
V
Current consumption
Icc
Without light input
-
-
32
mA
Pulse width distortion
T
-6
-
+6
ns
Maximum detectable signal level
Pimax
*
4
*
5
-5
-
-
dBm
Minimum detectable signal level
Pimin
*
4
*
5
-
-
-17.5
dBm
Rise time
tr
*
5
-
-
7
ns
Fall time
tf
*
5
-
-
7
ns
Voh
Ioh=20 A
2
-
-
V
Output voltage
Vol
Iol= -0.6 mA *
6
-
-
1
V
*4: Output from a 1 meter long plastic fiber (GH4001 made by Mitsubishi Rayon) set close to the molded lens.
*5: Evaluated based on the input/output waveforms shown below. Measured with a low-capacitance FET probe (3 pF or less).
*6: Output is the "L" level (inversion logic) when light is input.
s Dimensional outline (unit: mm)
KPICA0043EC
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