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Número de pieza | TSOP22xxIV1 | |
Descripción | IR Receiver Modules | |
Fabricantes | Vishay Siliconix | |
Logotipo | ||
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VISHAY
TSOP22..IV1
Vishay Semiconductors
IR Receiver Modules for Remote Control Systems
\
Description
The TSOP22..IV1 - series are miniaturized receivers
for infrared remote control systems. PIN diode and
preamplifier are assembled on lead frame, the epoxy
package is designed as IR filter.
The demodulated output signal can directly be
decoded by a microprocessor. TSOP22..IV1 is the
standard IR remote control receiver series, support-
ing all major transmission codes.
Features
• Photo detector and preamplifier in one package
• Internal filter for PCM frequency
• Improved shielding against electrical field
disturbance
• TTL and CMOS compatibility
• Output active low
• Low power consumption
Special Features
• Improved immunity against ambient light
• Suitable burst length ≥ 10 cycles/burst
Parts Table
Part
TSOP2230IV1
TSOP2233IV1
TSOP2236IV1
TSOP2237IV1
TSOP2238IV1
TSOP2240IV1
TSOP2256IV1
17274
Carrier Frequency
30 kHz
33 kHz
36 kHz
36.7 kHz
38 kHz
40 kHz
56 kHz
Block Diagram
30 kΩ
Input
AGC
Band Demo-
Pass dulator
PIN Control Circuit
2
VS
1
OUT
3
GND
Application Circuit
16842
Transmitter TSOPxxxx
R1 = 100 Ω
with
TSALxxxx
VS C1 =
4.7 µF
OUT
GND
VO
+VS
µC
GND
R1 + C1 recommended to suppress power supply
disturbances.
The output voltage should not be hold continuously at
a voltage below VO = 3.3 V by the external circuit.
Document Number 82207
Rev. 1, 11-Mar-03
www.vishay.com
1
1 page VISHAY
TSOP22..IV1
Vishay Semiconductors
Suitable Data Format
The circuit of the TSOP22..IV1 is designed in that way
that unexpected output pulses due to noise or distur-
bance signals are avoided. A bandpassfilter, an inte-
grator stage and an automatic gain control are used
to suppress such disturbances.
The distinguishing mark between data signal and dis-
turbance signal are carrier frequency, burst length
and duty cycle.
The data signal should fulfill the following conditions:
• Carrier frequency should be close to center fre-
quency of the bandpass (e.g. 38 kHz).
• Burst length should be 10 cycles/burst or longer.
• After each burst which is between 10 cycles and 70
cycles a gap time of at least 14 cycles is necessary.
• For each burst which is longer than 1.0 ms a corre-
sponding gap time is necessary at some time in the
data stream. This gap time should be at least 4 times
longer than the burst.
• Up to 800 short bursts per second can be received
continuously.
Some examples for suitable data format are: NEC
Code (repetitive pulse), NEC Code (repetitive data),
Toshiba Micom Format, Sharp Code, RC5 Code,
RC6 Code, R-2000 Code, Sony Code.
When a disturbance signal is applied to the
TSOP22..IV1 it can still receive the data signal. How-
ever the sensitivity is reduced to that level that no
unexpected pulses will occure.
Some examples for such disturbance signals which
are suppressed by the TSOP22..IV1 are:
• DC light (e.g. from tungsten bulb or sunlight)
• Continuous signal at 38 kHz or at any other fre-
quency
• Signals from fluorescent lamps with electronic bal-
last with high or low modulation
(see Figure 13 or Figure 14).
IR Signal from fluorescent
lamp with low modulation
16920
0
5 10 15
Time ( ms )
20
Figure 13. IR Signal from Fluorescent Lamp with low Modulation
IR Signal from fluorescent
lamp with high modulation
16921
0
5 10 15
Time ( ms )
20
Figure 14. IR Signal from Fluorescent Lamp with high Modulation
Document Number 82207
Rev. 1, 11-Mar-03
www.vishay.com
5
5 Page |
Páginas | Total 7 Páginas | |
PDF Descargar | [ Datasheet TSOP22xxIV1.PDF ] |
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