Document
aixin opto-electrical technology co.,ltd
AX-1838HS
DATA SHEET
● SHEET DATE
2007-4-19
DEVICE NUMBER:AX-1838HS
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CONTENTS
Initial Released
1.0 1.0 1.0 1.0 1.0 1.0
APPROVED
DRAWER
http://www.photo-link.cn
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aixin opto-electrical technology co.,ltd
AX-1838HS
INFRARED RECEIVER MODULE
● Description
TheAX-1838HS is miniaturized infrared receivers for remote control and other applications requiring improved ambient light rejection. The separate PIN diode and preamplifier IC are assembled on a single leadframe. The epoxy package contains a special IR filter. This module has excellent performance even in disturbed ambient light applications and provides protection against uncontrolled output pulses.
● Features
? Photo detector and preamplifier in one package . ? Internal filter for PCM frequency. ? Inner shield,good anti-interference ability. ? High immunity against ambient light. ? Improved shielding against electric field disturbance ? 3.0V or 5.0V supply voltage; low power consumption. ? TTL and CMOS compatibility. ? 8ms data pause time codes are acceptable .
● Applications:
1. Optical switch 2. Light detecting protion of remote contol ? AV instruments such as Audio,TV,VCR,CD,MD,DVD,etc. ? Home appliances such as Air-conditioner,Fan,etc. ? CATV set top boxes ? Multi-media Equipment
Absolute Maximum Ratings(Ta=25℃)
Parameter
Supply Voltage Operating Temperature Storage Temperature Soldering Temperature
Symbol
Vs Topr Tstg Tsd
Ratings 2.1-6.5
-20~+65 -40~+85 260
Unit
V ℃ ℃ ℃
Notice
¡ ¡ ¡ 4mm from mold body less than 5 sec
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Electrical And Optical Characteristics(Ta=25℃)
Ratings Min.
Supply Voltage Vs
AX-1838HS
Parameter
Symbol
Unit Max. 5.5
1.5 ¡ m V
Condition
Typ. ¡ ¡ ¡ 38 940 45 ¡ ¡ ¡ ¡
2.1
¡ 17 8 ¡ ¡ ¡ 400 400 4.5 ¡
Supply Current
Icc L0
mA
No signal input
Reception Distance L45 B.P.F Center Frequency Peak Wavelength Half Angle High Level Pulse Width Low Level Pulse Width High Level Output Voltage Low Level Output Voltage fo p TH TL VH VL ¡ ¡ ¡ ¡ 800 800 ¡ 0.5
At the ray axis*1
KHz nm deg S At the ray axis *2 S V V At the ray axis *1
*1:The ray receiving surface at a vertex and relation to the ray axis in the range of θ=0° and θ=45° *2:A range from 30cm to the arrival distance. Average value of 50 pulses
● BLOCK DIAGRAM
Vcc Vout Limiter B.P.F PD ABLC
Demodulator
Preamp
Amp
Integrator
Comparator GND
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Test Method
A.Standard Transmitter
Transmitter Output
AX-1838HS
B.Detection Length Test
Vcc
600us
600us
Standard Transmitter
D.U.T
GND
Vout
20cm >10k 5.0¡ 0.1V
Vout Oscilloscope
+ 10uF
Standard Transmitter
100k
Vout
Oscilloscope
C.Pulse Width Test
Transmitter Output
600us
600us
D.U.T Output Pulse VH TL TH VL
0V
Application Circuit
47 Infrared Emitting Diode IRM Vcc Out GND
GND +5V
47uF
>10k uC
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●Package Dimensions:
AX-1838HS
6.45 6.60 4.3
7.75 4.95
4.50
0.50¡ 0.05
1
2
3 2.54
22.5¡ 0.5
0.4
1 2 3
OUT GND VCC
NOTES:
1.All dimensions are in millimeters (inches). 2.Tolerance is ¡0. 30mm (0.012¡¡) unless otherwise specified. 3.Specifications are subject to change without notice.
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Electrical And Optical Curves(Ta=25℃)
AX-1838HS
Fig.1 Relative Spectral Sensitivity vs.
(%) 1.2
Wavelength
100
Fig.2 Relative Transmission Distance Vs. Direction
Relative Transmission Distance (%)
1.0
80
Relative Responsitibity
0.8
60
0.6
40
0.4
0.2
20
0 750
0 850 950 1050 1150 (nm) -60 -40 -20 0 20 40 60 80
Wavelength
Angle
(deg)
Fig.3 Frequency Dependence of Responsivity
1.0 (mA) 2.0 1.8 0.8 1.6 1.4
Fig.4 Supply Current vs. Ambient Temperature
Rel. Responsitivity
Supply Current
0 0
0.6
1.2 1.0 0.8 0.6 0.4 0.2 0.0 -30 0 30 60 90 (¡ C)
0.4
0.2
0.0 0.7
0.8
0.9
1.0
1.1
1.2
1.3
Relative Frequency
Ambient Temperature
Fig.5 Relative Transmission Distance vs. Direction
0 10 20 30
1.0
40
0.9 0.8
50 60 70
0.7
80 90 0.5 0.3 0.1 0.2 0.4 0.6
Relative Transmission Distance
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