IS1U20
IS1U20
OPIC Light Detector for Infrared
Communication
(IrDA1.0 Compatible)
■
Features
1. IrDA1.0 compatible OPIC light detector
(Transmission rate : 2.4 to 115.2kbps)
2. Compact design due to OPIC (Number of parts : 1)
3. Compatible with both 5V and 3V power supplies
(Operating supply voltage : 2.7 to 5.5V)
4. Visible light cut-off type
5. Recommended use in combination emitter ( GL1F20)
Applications
■
1. Personal computers
2. Portable information terminal equipment
3. Printers
4. Word processors
IrDA : Abbreviation of the Infrared Data Association established
for standardization of infrared communication specifications
■
Absolute Maximum Ratings
Parameter Symbol Rating Unit
Supply voltage
*1
Operating temperature
Storage temperature
*2
Soldering temperature
*1 No dew condensation is allowed.
*2
For MAX. 3 seconds at the position of 2 mm from the resin edge (1.0 mm thick PWB mounting)
■
Recommended Operating Conditions
Parameter Symbol Rating Unit
Supply voltage 2.7 to 5.5 V
Transmission rate 2.4 to 115.2 kbps
■
Electro-optical Characteristics
Parameter Symbol Conditions MIN. TYP. MAX. Unit
Dissipation current
High level output voltage
Low level output voltage
Low level pulse width
Rise time
Fall time
MAX. reception distance
V
BR
V
T
T
T
cc
0to 6.0
cc
- 10 to +70
opr
- 20 to +85
stg
sol
260 ˚C
I
CC1
I
CC2
V
OH1
V
OH2
V
OL1
V
OL2
t
W1
t
W2
t
r
t
f
L
Vcc=5V, no input light, output terminal OPEN
Vcc=3V, no input light, output terminal OPEN
Vcc =5V
Vcc = 3V
Vcc = 5V, I
Vcc = 3V, I
BR = 2.4kbps,*3,4,5
BR = 115.2kbps,*3,4,5
BR = 115.2kbps,*3,4,5
BR = 115.2kbps,*3,4,5
V , V , t , t and t to be met at φ<= 15˚. *3, 4, 5.
OH OL W r f
(Ta=25˚C)
V
˚C
˚C
(Ta=25˚C)
OL
OL
■
Outline Dimensions
5.6
4.6
R 1.8
MAX0.6
3-0.45
1.27 1.27
1
2
Terminal
configuration
* OPIC (Optional IC) is a trademark of the SHARP Corporation.
An OPIC consists of a light-detecting element and signal-processing circuit
integrated onto a single chip.
3.2
0.85
4.0
1.0
17.9
3
MIN 0.3
Vout
1
2
GND
3
Vcc
Black resin
(visible light cut-off)
2.4
(Ta=25˚C )
-
= 400m A, *3,4,5
= 400m A, *3,4,5
4.5
2.5
0.8
0.8
1.0
-
0.7
-
-
-
1
1.4
1.0
-
-
-
-
-
-
-
-
-
-
-
0.4
0.4
16.0
8.0
1.2
0.2
-
(Unit : mm)
0.4
mA
mA
V
V
V
V
µs
µs
µs
µs
m
“ In the absence of confirmation by device specification sheets, SHARP takes no responsibility for any defects that occur in equipment using any of SHARP's devices, shown in catalogs,
data books, etc. Contact SHARP in order to obtain the latest version of the device specification sheets before using any SHARP's device.”
Circuit Block Diagram
■
*3 Input signal waveform
T
T =416.7µs and T =78.1µs at BR=2.4kbps
12
T =8.68µs and T =1.63µs at BR=115.2kbps
12
*4 Output waveform regulation
1
T
2
Auto bias current
control circuit
Amp. Comparator
Photodiode
T
1
Ro= 22kΩ
3
Vcc
1
Vout
2
GND
Transmitter radiant intensity : 40 mW/sr
IS1U20
t
f
90%
t
r
V
OH
50%
10%
t
w
V
OL
*5 Optical system
φ
IS1U20
Receiving distance : L
*1 Transmitter
(φ: Horizontal and vertical directions)
*1 Transmitter shall use the light emitting diode GL550 ( λp=850 to 900 nm) and be adjusted to the radiant intensity of 40mW/sr.
φ
Oscilloscope
■
Infrared Communication Terminal System Configuration Using GL1F20/IS1U20
OA equipment body such as portable information terminal equipment OA equipment body such as portable information terminal equipment
Comparator
Amp
IS1U20
Light emitting device for
infrared communication
(GL1F20)
Serial • parallel converter circuit
■
General Descriptions of Standard Specifications (IrDA1.0)
Transmission rate : 2.4k to 115.2kbps
Modulator/remodulator circuit
Comparator
OPIC detecting device for
infrared communication
(IS1U20)
Amp
Light emitting device for
infrared communication
(GL1F20)
(3/6) T
Modulation system : SIR
Receiving distance : 1 m
Transmitting wavelength : 850 to 900 nm
Receiving waveform : As shown in the right drawing
Output waveform : As shown in the right drawing
Receiving
waveform
TT
Output
waveform
OPIC detecting device for
infrared communication
(IS1U20)
01 10
T=8.6to417 µ s
Modulator/remodulator circuit
Serial • parallel converter circuit
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