L E D
Red LED for optical link
L9534
Red LED for 125 Mbps optical link
L9534 is a LED ideal for high-speed POF communications. L9534 is sealed in a small plastic package with a lens, allowing easy coupling
to an FOP.
Features
Applications
Peak emission wavelength: 650 nm
High-speed response and high output power
Home networks and short-range high-speed data
communications
■ Absolute maximum ratings (Ta=25 °C)
Parameter
Forward current
Reverse voltage
Power dissipation *1
Operating temperature
Storage temperature
Soldering
Symbol
IF
VR
Pmax
Topr
Tstg
-
Value
40
3
250
-20 to +70
-40 to +85
Unit
mA
V
mW
°C
°C
-
230 °C, 5 s, at least 1.8 mm away from package surface
*1: Power dissipation going down at a rate of -1.75 mW/°C above Ta=25 °C
■ Electrical and optical characteristics (Ta=25 °C)
Parameter
Symbol
fD
Condition
NRZ *2
IF=20 mA
VR=3 V
Min.
DC
1.8
-
-
-
-6.5
-2
-
Typ.
Max.
125
2.5
10
-
-
-3
0
1.5
Unit
Mbps
V
Data rate
-
2.0
-
650
20
-
Forward voltage
VF
Reverse current
IR
µA
Peak emission wavelength
Spectral half width (FWHM)
Fiber-coupled optical output
Pulse distortion
IF=20 mA
IF=20 mA
nm
nm
dBm
ns
λp
∆λ
Po
∆T
∆tj
2, 3, 4
*
2, 3
*
-
-
2, 3
Jitter
*
ns
*2: Measured with the recommended driver circuit shown below.
(Vcc=4.75 to 5.25 V, R1=180 Ω, R2=470 Ω, R3=10 Ω, C1=47 pF)
Vcc
Icc
4.7
F
0.1
F
R2
74ACT08
3
14
7
R1
1
2
SIGNAL INPUT
L9534
1
2
3
4
R3
C1
KLEDC0039EA
*3: Input is a pseudo-random bi-phase signal at 125 Mbps (NRZ signal conversion).
*4: Average value (duty ratio 50 %) measured by using a plastic fiber of φ1 mm. SI-POF and NA=0.5 (GH4001 made by Mitsubishi
Rayon).
Note)
· A bypass capacitor (0.1 µF) and another capacitor (4.7 µF) are connected between Vcc and GND at a position within 3 mm from
the lead.
· The center of the optical fiber is aligned with the center of the lens on the package. The distance between the fiber end and the
lens is 0.1 mm.
1