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Open Impulse
Open Impulse

TL1838 Datasheet

Infrared Receiver


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TL1838 Infrared Receiver Datasheet
1. Features
  * Compact design; 
  * Built­in dedicated IC; 
  * wide­angle and long distance reception; 
  * anti­stem worries ability; 
  * can more than offset the impact of ambient light; 
  * Low voltage operation;
2. Dimensions and Pin Assignment
Page 1

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3. Application Circuit
4. Schematic Diagram
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Page 2

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5. Optical Parameters (T = 25  Vcc = 5v f0 = 38KHZ)
Parameter
Operating Voltage
Receiving
distance
Carrier Frequency
Acceptance angle
BMP width
Quiescent Current
Symbol
Vcc
L
f0
01/2
FBW
Icc
Low output
High­level output
The output pulse
width 
VOL
VOH
TPWL
TPWH
Test Conditions
 
L5IR = 300MA 
(test signal)
 
Distance attenuation 1/2
­3Db andwidth
When there is no signal
input
Vin = 0V Vcc = 5V
Vcc = 5V
Vin = 500μVp­p 
Vin = 50mVp­p 
Min
2.7
10
38K
 
2
­­­­
 
4.5
500
500
Typ
 
15
 
+ / ­35
3.3
0.8
0.2
 
600
600
Mnx
5.5
 
 
 
5
1.5
0.4
 
700
700
Unit
V
M
HZ
Deg
kHz
mA
V
V
μs
μs
  ※ testing on the optical axis to the transmit pulse width 600/900μs, 5CM within receiving range, the
average value of the received pulse 50
6. Test Wave
Page 3
Part Number TL1838
Manufactur Open Impulse
Description Infrared Receiver
Total Page 4 Pages
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