L E D / P H O T O I C
Red LED/Photo IC for optical link
Emitter/receiver for 156 Mbps POF communications
L7726/S7727
L7726 and S7726 are designed for high-speed POF (Plastic Optical Fiber) communications. Both devices are molded into miniature plastic
packages with lenses, allowing easy and efficient coupling to a POF. S7727 uses a monolithic photo IC that ensures high resistance to external
noise and high reliability, and provides P-ECL voltage conversion output.
Features
Applications
l Plastic optical fiber communications (FA, office machine,
home automation, LAN)
l Data transmission in locations subject to high
electromagnetic noise
l Red LED for POF data link
l 650 nm emission suitable for POF communications
l High-speed response: fc=100 MHz Typ.
l High output power: Po= -1.5 dBm (I
F
=30 mA,
1 mm, POF)
l Photo IC receiver for POF data link
l Monolithic structure immune from external noise
l Data rates from 4 Mbps to 156 Mbps
l P-ECL voltage conversion output
(Note: Unlike normal P-ECL output, S7727 output
cannot be terminated with 50
9.)
L7726
S7727
I Absolute maximum ratings (Ta=25 C)
Parameter
Symbol
Value
Unit
Forward current
I
.
50
mA
Power dissipation
Pmax
250
*1
mW
Operating temperature
Topr
0 to 60
C
Storage temperature
Tstg
-40 to +85
C
Soldering-
230 C, 5 s, at least 1.5 mm away from packag
e surface
-
*1: Derate power dissipation at a rate of 1.7mW/C above Ta=25 C
I Electrical and optical characteristics (Ta=25 C)
Parameter
Symbol
Condition
Min.
Typ.
Max.
Unit
Forward voltage
V
.
I
.
=30 mA
-
2.3
-
V
Peak emission wavelength
lp
I
.
=30 mA
640
650
660
nm
Spectral half width (FWHM)
Dl
I
.
=30 mA
-
10
-
nm
Fiber coupled optical power
Po
I
.
=30 mA
*2
-
-1.5
-
dBm
Cut-off frequency
fc
I
.
=30 mA
-
100
-
MHz
*2: Measured using a 1-meter long optical fiber (MH4001 made by Mitsubishi Rayon).
L7726
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. 2002 Hamamatsu Photonics K.K.
Red LED/Photo IC for optical link
L7726/S7727
Cat. No. KPIC1034E01
Aug. 2002 DN
Note)
G A bypass capacitor (0.1 F) connected at a position within
2 mm from the lead, and a 4.7 F capacitor is also con-
nected to the power supply line nearby.
G The optical axis of the package lens is exactly aligned with
the center axis of the optical plug, and the gap between the
lens surface and the optical reference plane of the plug is
0.1 mm.
G If modulated light at 4 Mbps or less (including DC light and
no light input) is input to S7727, the high and low levels
cannot be discerned.
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
Tolerance unless otherwise
noted: 0.1, 2
Shaded area indicates burr.
Values in parentheses indicate
reference value.
(0.9)
L7726
PIN No.
S7727
QB
GND
Q
Vcc
CATHODE
CATHODE
ANODE
CATHODE
1.77
0.97
0.69
10
(0.9)
4.3
0.25
10
1.8
I Absolute maximum ratings (Ta=25 C)
Parameter
Symbol
Value
Unit
Supply voltage
Vcc
-0.5 to +7.0
V
Output voltage
Vo
-0.5 to Vcc + 0.5
V
Output current
Io
8
mA
Power dissipation
Pmax
250
*3
mW
Operating temperature
Topr
-20 to +70
C
Storage temperature
Tstg
-40 to +85
C
Soldering
-
230 C, 5 s, at least 1.5 mm away from package surface
-
*3: Derate power dissipation at a rate of 1.7mW/C above Ta=25 C
I Electrical and optical characteristics (Ta=25 C, Vcc=5.0 V)
Parameter
Symbol
Condition
Min.
Typ.
Max.
Unit
Data rate
fD
Bi-phase signal
NRZ conversion
4
-
156
Mbps
Current consumption
Icc
*4, *5, *8
-
-
40
mA
High level output voltage
Voh
Ioh= -1 mA
*4, *5, *8
3.9
-
4.3
V
Low level output voltage
Vol
Iol= -0.5 mA
*4, *5, *8
2.9
-
3.4
V
Minimum overload
Pimax
*4, *5, *6, *7, *8
-2
-
-
dBm
Minimum receiver input power
Pimin
*4, *5, *6, *7, *8
-
-
-22
dBm
Rise time
tr
-
-
3
ns
Fall time
tf
10 to 90 %
*4, *5, *8
-
-
3
ns
Pulse width distortion
DT
*4, *5, *6, *8
-3
-
3
ns
Jitter
Dtj
*4, *5, *6, *8
-
-
3
ns
*4: Measured with 156 Mbps input signal (Bi-phase signal)
*5: A 3 pF capacitor is connected to GND as a capacitive load (including parasitic capacitance such as probes, connectors and
evaluation PCB patterns)
*6: An optical input waveform is generated with a Hamamatsu standard transmitter.
*7: A detectable signal level is an average value, measured using a plastic fiber (MH4001 made by Mitsubishi Rayon).
*8: A 3 kW resistor is externally connected between Q and GND and also between QB and GND.
S7727
KPICA0029EA
I Dimensional outline (unit: mm)
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