Sharp IS1U621 Sensors for remote control Datasheet

IS1U621/IS1U621L
IS1U621/IS1U621L
Sensors for Remote Control
■ Features
■ Outline Dimensions
1. Compact
(Unit : mm)
IS1U621
3.5
3.5
3.4
3.4
2.9 3.6
8.7
4.5
2.9 2.9
4.0
(Volume : About 1/8 compared with GP1U58X )
2. High sensitivity (Ultimate distance : MIN. 8 m)
3. B.P.F. (Band Pass Frequency) center frequency : (TYP. 38kHz)
1. Audio equipment
2. Cameras
1.0
21.0 ± 1.0
■ Applications
1.0
0.4 +- 0.2
0.1
0.5
2.54
2.54
1
2
1 VOUT
2 GND
3 VCC
3
* Tolerance : ± 0.2 mm
IS1U621L
■ Absolute Maximum Ratings
3.4
2.9 3.6
(Ta=25˚C)
1
2
3
+
0.4 - 0.2
0.1
2.9 2.9
Unit
V
˚C
˚C
˚C
1.4
Rating
0 to 6.0
- 10 to + 60
- 20 to + 70
260
4.0
Symbol
V CC
Topr
Tstg
Tsol
3.5
3.4
4.5
Parameter
Supply voltage
*1Operating temperature
Storage temperature
*2
Soldering temperature
3.5
2.1
*1 No dew condensation is allowed.
*2 For 5 seconds at the position of 4.2 mm from the resin edge
1.5
15.2 ± 1.0
1 VOUT
2 GND
3 VCC
4.2mm
Soldering area
3.1mm
* Tolerance : ± 0.2 mm
Soldering area
■ Recommended Operating Conditions
Parameter
Operating supply voltage
Symbol
V CC
Recommended
operating conditions
4.7 to 5.3
Unit
V
“ 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.”
IS1U621/IS1U621L
■ Electrical Characteristics
(Ta=25˚C, Vcc =+5V)
Parameter
Symbol
ICC
V OH
V OL
T1
T2
fO
L
Dissipation current
High level output voltage
Low level output voltage
High level pulse width
Low level pulse width
B.P.F. center frequency
*5 Linear
ultimate distance
Conditions
MIN.
No input light, Output terminal OPEN
*3, Output terminal OPEN
V CC- 0.2
*3, *4
400
400
8.0
*3
Ee < 10 lx
*3 The burst wave as shown in the following figure shall be transmitted.
*4 Pull-up resistance : 2.2kΩ
*5 By SHARP transmitter
fo= 38kHz, Duty 50%
Transmission
signal
600 µs
600 µs
T2
T1
Output
■ Internal Block Diagram
Vout
Limiter
B.P.F.
Demodulator Integrator Comparator
Vcc
GND
TYP.
MAX.
Unit
2.8
0.45
38
-
4.5
0.6
800
800
-
mA
V
V
µs
µs
kHz
m
IS1U621/IS1U621L
■ Performance
Using the transmitter shown in Fig. 1, the output signal of the light detecting unit is good enough to meet the following items in the standard optical system in Fig. 2.
(1) Linear reception distance characteristics
When L=0.2 to 8 m, Ee < 10 lx ( *6) and φ =0˚ in Fig. 2, the output signal shall meet the electrical characteristics in the attached list.
(2) Sensitivity angle reception distance characteristics
When L=0.2 to 5 m, Ee < 10 lx ( *6) and φ<= 30 ˚ in the direction X and θ =0˚ in the direction Y in Fig. 2,
the output signal shall meet the electrical characteristics in the attached list. Further, the electrical characteristics shall be met
when L=0.2 to 5 m, Ee < 10 lx (*6) and φ =0˚ in the direction X and θ<= 15˚ in the direction Y.
*6 It refers to detector face illuminance.
20cm
10kΩ
Transmitter (GL521 used)
Duty 50%
f o = 38kH z
10µ F
10kΩ
PD49PI
+ 5V
Vout
Oscilloscope
Fig. 1 Transmitter
In the above figure, the transmitter should be set so that the output Vout can be 40mV P - P .
However, the PD49PI to be used here should be of the short-circuit current I SC =2.6 µ A at Ev=100 lx.
(Ev is an illuminance by CIE standard light source A (tungsten lamp).)
Direction Y
Direction X
External disturbing light
detector face illuminance : Ee
θ, φ
θ, φ
Reception distance : L
Transmitter
φ : Direction X
θ : Direction Y
Fig. 2 Standard optical system
Vout
IS1U621/IS1U621L
Fig. 1 B.P.F. Frequency Characteristics (TYP.)
Fig. 2 Sensitivity Angle (Direction X)
Characteristics (TYP.) for Reference
- 10˚
0˚
Relative reception distance (%)
- 20˚
Relative sensitivity (5dB/div)
- 30˚
- 40˚
- 50˚
- 60˚
18
22
26
30
34
38
42
46
50
54
58
- 30˚
- 40˚
- 50˚
- 60˚
40˚
50˚
50
60˚
70˚
- 80˚
80˚
- 90˚
90˚
0
10˚
Fig. 4 Relative Reception Distance vs. Ambient
Temperature (TYP.) for Reference
120
20˚
30˚
40˚
50
50˚
60˚
- 70˚
70˚
- 80˚
80˚
- 90˚
90˚
0
Relative reception distance (%)
Relative reception distance (%)
0˚
30˚
Angular displacement φ
Fig. 3 Sensitivity Angle (Direction Y)
Characteristics (TYP.) for Reference
- 10˚
20˚
- 70˚
Carrier frequency (kHz)
- 20˚
10˚
100
80
60
40
Relative comparison with reception
distance at V CC =5V,φ =0˚ , Ee <10 lx
and Ta=25 ˚C taken as 100%
20
0
SHARP
standard transmitter
Unit
- 40
- 20
0
20
40
60
80
100
Ambient temperature Ta (˚C)
Angular displacement φ
Fig. 5 AEHA (Japan Association of Electrical Home Appliances)
Code Pulse Width Characteristics (1st Bit) (TYP.) for Reference
700
(Conditions)
Low level pulse width
600
Pulse width (µ s)
AEHA code generating transmitter
Unit
500
400
VCC =5V, Ta=RT, φ =0˚ , Ee < 10 lx
300
200
1st bit
High level pulse width
100
0
T= 430µs
0
1
2
3
4
5
6
7
Reception distance (m)
8
9
10
IS1U621/IS1U621L
Fig. 6 Spectral Sensitivity for Reference
100
90
Ta=25˚C
Relative sensitivity (%)
80
70
60
50
40
30
20
10
0
500
600
700
800
900
1000
1100
Wavelength λ (nm)
■ Precautions for Operation
(1) Use the light emitting unit (remote control transmitter), in consideration of performance, characteristics, operating conditions of
light emitting device and the characteristics of the light detecting unit.
(2) Pay attention to a malfunction of the light detecting unit when the surface is stained with dust and refuse.
Care must be taken not to touch the light detector surface.
• Conduct cleaning as follows.
(3) Cleaning
Solvent dip cleaning : Solvent temperature of 45 ˚C max., dipping time : Within 3 minutes
Ultrasonic cleaning : Elements are affected differently depending on the size of cleaning bath, ultrasonic output, time,
size of PWB and mounting method of elements.
Conduct trial cleaning on actual operating conditions in advance to make sure that no problem results.
• Use the following solvents only.
Solvents: Ethyl alcohol, methyl alcohol or isopropyl alcohol
(4) To avoid the electrostatic breakdown of IC, handle the unit under the condition of grounding with human body, soldering iron, etc.
(5) Do not apply unnecessary force to the terminal.
(6) Example of recommended external circuit (mount outer mounting parts near the sensor as much as possible.)
R1
VCC
Ve
+
C1
IS1U621
GND
GND
C2
Vout
Vout
Connect capacitor C 2 between Vout and GND terminals as shown above
(Circuit constant)
R1 = 47 Ω ± 5%
C1 = 47µ F
C2 = 1 000pF
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