Technical Data Sheet
Photo-link Light Transmitter Unit
PLT252 Series
Features
•
High speed signal transmission（25Mbps NRZ Signal）
•
TTL interface compatible
•
+3~+5V single power source
•
Pb Free
•
The product itself will remain within RoHS compliant version.
Descriptions
The opto-electrical component is assembled with
a 660nm GaAs RCLED and a driver IC. It
transforms the electrical signal to optical signal and
be transmitted by 1mm diameter plastic optical
fiber.
The component is operated at +3~+5V and has
good performance at low dissipation current, steady
light output and efficient light coupling.
Applications
•
Digital audio equipment
•
CD player
•
DVD player
•
HDMI Digital (192kHz) Audio Interface
Device Selection Guide
Chip
Material
λp(nm)
GaAs
660
Operating
Voltage
(Vcc)
+3.0~5.0
Dissipation
Current(mA)
Typ.
5.5
Max.
10
Fiber Coupling Light Output
(dBm)
Min.
-21
Typ.
--
Max.
-15
Everlight Electronics Co., Ltd.
Device NO.: DPL-252-001
http://www.everlight.com
Prepared date: 07-25-2005
Rev 2
Page: 1 of 7
Prepared By: Chin-Chia Hsu
PLT252 Series
Package Dimension:
A
R1
.40
2.20±0.1
R0
.65
1.50
2.48
AT
0.90
0.50±0.05
3
2
2.54
5.08
A'
1
6.60
A1
0.25
Rear View
Front View
5.70±0.1
Side View
Notes:
1.All dimensions are in millimeters.
Pin Function:
1.GND
2.General Tolerance: Pin length tolerance is ±0.25 mm
2.Vcc
3.Vin
others are ±0.10 mm
3.Leadframe Material: NM3K
4.Epoxy Color: White
5.Plating Thickness: Silver Layer>0.8µm+ Tin Layer>2µm
6.It must be placed a 0.1µF capacitor in the between of Vcc and GND within 7mm.
7.Device Selection Table:
Device Name
PLT252
PLT252/S1
PLT252/S2
PLT252/S3
Pin Length A1 (mm)
12.55±0.25
7.50±0.25
5.22±0.25
10.20±0.25
Everlight Electronics Co., Ltd.
Device NO.: DPL-252-001
http://www.everlight.com
Prepared date: 07-25-2005
Rev 2
4.95±0.1
Page: 2 of 7
Prepared By: Chin-Chia Hsu
PLT252 Series
Absolute Maximum Ratings( Ta = 25
ºC
)
Parameter
Supply Voltage
DC Input Voltage
Storage Temperature
Operating Temperature
Soldering Temperature
* Soldering time
≤
10 s.
Symbol
Vcc
Vin
Tstg
Topr
Tsol
Rating
-0.5 to 7
-0.5 to Vcc+0.5
-40 to 85
-20 to 70
260*
Unit
V
V
ºC
ºC
ºC
Electro-Optical Characteristics
Parameter
Operating Voltage
Peak Emission Wavelength
Transmission Rate
Fiber Coupling Output Power
Dissipation Current
High Level Input Voltage
Low Level Input Voltage
Low to High Delay Time
High to Low Delay Time
Pulse Width Distortion
Jitter
Pf
Icc
V
IH
V
IL
t
pLH
t
pHL
∆tw
∆tj
*2
*2
*2
*2
Symbol
Vcc
λp
NRZ Code
*1
*1
Conditions
Low Voltage
High Voltage
MIN.
2.75
4.75
640
DC
-21
3
2
-
-
-
-20
-
TYP.
3.00
5.00
660
-
-18
-
-
-
-
-
-
-
MAX.
3.25
5.25
680
25
-15
10
-
0.8
100
100
20
15
Unit
V
V
nm
Mbps
dBm
mA
V
V
ns
ns
ns
ns
*All Plastic Optical Fiber（980/1000um）
*Circuit Layout Notice: When power is off, it must be cut off together in Vin and Vcc pin.
If it only has Vcc power-off, LED will sure to be no output power.
Vcc
2.7~5.5V
2.7~5.5V
2.7~5.5V
FLOATING
Vin
High
Low
FLOATING
0~Vcc
LED Condition
ON
OFF
OFF
OFF
http://www.everlight.com
Prepared date: 07-25-2005
Rev 2
Page: 3 of 7
Everlight Electronics Co., Ltd.
Device NO.: DPL-252-001
Prepared By: Chin-Chia Hsu
PLT252 Series
Measuring Method
*1
Measuring method of optical output coupling fiber and dissipation current
Standard plastic optic fiber cable
PLT252 Transmitter Unit
Vin
Vcc
GND
Optical power meter
PADVANTEST Q8221
The optical power meter must be calibrated
to have the wavelength sensitivity of 660nm
( 0 dBm = 1mW)
Icc
0.1uF
Signal
Input
DC
5V
*2 Pulse response measuring method
Standard plastic optic fiber cable
PLT252 Transmitter Unit
Vin
Vcc
GND
Standard Receiver Unit
0.1uF
Signal
Input
5V
CH1
25Mbps NRZ "0101" successive signal input
T
PLH
T
PHL
CH2
Input
Output
tj1
50%
50%
tj2
t
w
= T
PHL
-T
PLH
Everlight Electronics Co., Ltd.
Device NO.: DPL-252-001
http://www.everlight.com
Prepared date: 07-25-2005
Rev 2
Page: 4 of 7
Prepared By: Chin-Chia Hsu
PLT252 Series
Typical Electro-Optical Characteristics Curves
*Fig.3
Relative Output Power vs. Operating
Temperature
*Fig.4
Relative Output Power vs. Operating
Voltage
110
Relative Transmission Ourput Power (%)
105
105
100
105
Relative Output Power (%)
100
Relative Output Power (%)
95
Relative Output Power (%)
101
100
99
98
97
96
100
95
90
95
Vcc=5V
Vcc=3V
85
90
90
2.5
3.0
3.5
4.0
4.5
5.0
5.5
85
0
20
40
60
o
Operating Voltage (V)
80
100
80
1
2
3
4
5
6
85
Operating Temperature ( C)
25Mbps Input Signal (Vin)
Everlight Electronics Co., Ltd.
Device NO.: DPL-252-001
http://www.everlight.com
Prepared date: 07-25-2005
Rev 2
Page: 5 of 7
Prepared By: Chin-Chia Hsu
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