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TSOP373.., TSOP375..
Vishay Semiconductors
IR Receiver Modules for Remote Control Systems
22531-1
ORDERING CODE
Taping:
TSOP37...TT - top view taped
TSOP37...TR - side view taped
FEATURES
• Very low supply current
• Photo detectors and preamplifier in one package
• Internal filter for PCM frequency
• Supply voltage: 2.5 V to 5.5 V
• Improved immunity against ambient light
• Insensitive to supply voltage ripple and noise
• Material categorization:
for definitions of compliance please see
www.vishay.com/doc?99912
DESCRIPTION
The TSOP373.., TSOP375.. series are miniaturized receiver
modules for infrared remote control systems. A PIN diode
and a preamplifier are assembled on a PCB, the epoxy
package contains an IR filter. The demodulated output
signal can be directly connected to a microprocessor for
decoding.
The TSOP373.. series devices are optimized to suppress
almost all spurious pulses from energy saving lamps like
CFLs. AGC3 may also suppress some data signals if
continuously transmitted.
New designs should prefer the TSOP373.. series containing
the newer AGC3. The TSOP375.. series contain a very
robust AGC5. This series should only be used for critically
noisy environments.
These components have not been qualified according to
automotive specifications.
PARTS TABLE
AGC
36 kHz
Carrier
38 kHz
frequency 40 kHz
56 kHz
Package
Pinning
Dimensions (mm)
Mounting
Application
Best remote control code
NOISY ENVIRONMENTS
AND SHORT BURSTS (AGC3)
VERY NOISY ENVIRONMENTS
AND SHORT BURSTS (AGC5)
TSOP37336 (1)
TSOP37536
TSOP37338 (2)(3)(4)(5)
TSOP37538
TSOP37340
TSOP37540
TSOP37356
TSOP37556
Belobog
1 = OUT, 2, 3, 6, 7, 8 = GND, 4, 5 = VS
3.95 W x 3.95 H x 0.8 D
SMD
Remote control
(1) MCIR (2) Mitsubishi (3) RECS-80 Code (4) r-map (5) XMP-1, XMP-2
Rev. 1.6, 10-Nov-15
1 Document Number: 82446
THIS DOCUMENT IS SUBJECT TO CHANGE WITHOUT NOTICE. THE PRODUCTS DESCRIBED HEREIN AND THIS DOCUMENT
ARE SUBJECT TO SPECIFIC DISCLAIMERS, SET FORTH AT www.vishay.com/doc?91000

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BLOCK DIAGRAM
30 kΩ
Input
AGC
Band
pass
Demo-
dulator
PIN
20445-5
Control circuit
4, 5
VS
1
OUT
2, 3,
6, 7, 8
GND
TSOP373.., TSOP375..
Vishay Semiconductors
APPLICATION CIRCUIT
17170_5
Transmitter
with
TSALxxxx
IR receiver
VS
OUT
GND
R1
C1
VO
+ VS
µC
GND
R1 and C1 are recommended for protection against EOS.
Components should be in the range of 33 Ω < R1 < 1 kΩ,
C1 > 0.1 µF.
ABSOLUTE MAXIMUM RATINGS
PARAMETER
TEST CONDITION
SYMBOL
VALUE
UNIT
Supply voltage
Supply current
Output voltage
Output current
Junction temperature
Storage temperature range
Operating temperature range
Power consumption
Tamb 85 °C
VS
IS
VO
IO
Tj
Tstg
Tamb
Ptot
-0.3 to +6
3
-0.3 to (VS + 0.3)
5
100
-25 to +85
-25 to +85
10
V
mA
V
mA
°C
°C
°C
mW
Note
• Stresses beyond those listed under “Absolute Maximum Ratings” may cause permanent damage to the device. This is a stress rating only
and functional operation of the device at these or any other conditions beyond those indicated in the operational sections of this specification
is not implied. Exposure to absolute maximum rating conditions for extended periods may affect the device reliability.
ELECTRICAL AND OPTICAL CHARACTERISTICS (Tamb = 25 °C, unless otherwise specified)
PARAMETER
TEST CONDITION
SYMBOL
MIN.
TYP.
MAX.
Supply voltage
Supply current
Transmission distance
Output voltage low
VS = 3.3 V, Ev = 0
Ev = 40 klx, sunlight
Ev = 0, IR diode TSAL6200,
IF = 200 mA, test signal see Fig. 1
IOSL = 0.5 mA, Ee = 0.7 mW/m2,
test signal see Fig. 1
VS
ISD
ISH
d
VOSL
2.5
0.27
-
-
-
-
0.35
0.45
45
-
5.5
0.45
-
-
100
Minimum irradiance
Pulse width tolerance:
tpi - 5/fo < tpo < tpi + 6/fo,
test signal see Fig. 1
Ee min.
-
0.12 0.25
Maximum irradiance
tpi - 5/fo < tpo < tpi + 6/fo,
test signal see Fig. 1
Ee max.
30
-
-
Directivity
Angle of half transmission
distance
ϕ1/2
-
± 75
-
UNIT
V
mA
mA
m
mV
mW/m2
W/m2
deg
Rev. 1.6, 10-Nov-15
2 Document Number: 82446
THIS DOCUMENT IS SUBJECT TO CHANGE WITHOUT NOTICE. THE PRODUCTS DESCRIBED HEREIN AND THIS DOCUMENT
ARE SUBJECT TO SPECIFIC DISCLAIMERS, SET FORTH AT www.vishay.com/doc?91000

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TSOP373.., TSOP375..
Vishay Semiconductors
TYPICAL CHARACTERISTICS (Tamb = 25 °C, unless otherwise specified)
Ee
Optical Test Signal
(IR diode TSAL6200, IF = 0.4 A, N = 6 pulses, f = f0, t = 10 ms)
tpi *)
T
t
*) tpi 6/f0 is recommended for optimal function
VO
VOH
Output Signal
1) 3/f0 < td < 9/f0
2) tpi - 4/f0 < tpo < tpi + 6/f0
14337
VOL
td 1)
tpo 2)
t
Fig. 1 - Output Function
0.8
ton
0.7
0.6
0.5
toff
0.4
0.3
0.2
λ = 950 nm,
0.1 optical test signal, Fig. 3
0
0.1
20759
1 10 100 1000
Ee - Irradiance (mW/m2)
10 000
Fig. 4 - Output Pulse Diagram
0.40
0.35
0.30
0.25 Output pulse width
0.20
0.15
Input burst length
0.10
0.05 λ = 950 nm,
optical test signal, Fig. 1
0
0.1 1
10 100
1000
20760
Ee - Irradiance (mW/m²)
10 000
Fig. 2 - Output Pulse Width vs. Irradiance
1.2
1.0
0.8
0.6
0.4
0.2
0.0
0.7
16925
f = f0 ± 5 %
Δf(3 dB) = f0/10
0.9 1.1
f/f0 - Relative Frequency
1.3
Fig. 5 - Frequency Dependance of Responsivity
Optical Test Signal
Ee
600 µs
t = 60 ms
600 µs
Output Signal, (see Fig. 4)
VO
VOH
VOL
t on
t off
Fig. 3 - Output Function
t
94 8134
t
4.0
Correlation with ambient light sources:
3.5 10 W/m2 = 1.4 klx (std. illum. A, T = 2855 K)
10 W/m2 = 8.2 klx (daylight, T = 5900 K)
3.0
2.5
Wavelength of ambient
illumination: λ = 950 nm
2.0
1.5
1.0
0.5
0
0.01
0.1
1
10 100
20757
Ee - Ambient DC Irradiance (W/m2)
Fig. 6 - Sensitivity in Bright Ambient
Rev. 1.6, 10-Nov-15
3 Document Number: 82446
THIS DOCUMENT IS SUBJECT TO CHANGE WITHOUT NOTICE. THE PRODUCTS DESCRIBED HEREIN AND THIS DOCUMENT
ARE SUBJECT TO SPECIFIC DISCLAIMERS, SET FORTH AT www.vishay.com/doc?91000

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1.0
f = 100 Hz
0.9
0.8
f = 10 kHz
0.7
0.6
f = 20 kHz
0.5
0.4
f = 30 kHz
0.3
0.2 f = fo
0.1
20753
0
1 10 100 1000
VsRMS - AC Voltage on DC Supply Voltage (mV)
Fig. 7 - Sensitivity vs. Supply Voltage Disturbances
1
0.9
0.8 f = 38 kHz, Ee = 2 mW/m²
0.7
0.6
0.5
0.4
0.3
0.2 TSOP373..
0.1
0
0
TSOP375..
20 40 60 80 100 120
Burst Length (number of cycles/burst)
Fig. 8 - Max. Envelope Duty Cycle vs. Burst Length
0.30
0.25
0.20
0.15
0.10
0.05
0
-30 -10 10 30 50 70 90
Tamb - Ambient Temperature (°C)
Fig. 9 - Sensitivity vs. Ambient Temperature
TSOP373.., TSOP375..
Vishay Semiconductors
1.0
0.9
0.8
0.7
0.6
0.5
0.4
0.3
0.2
0.1
0
750 800 850 900 950 1000 1050 1100 1150
λ - Wavelength (nm)
Fig. 10 - Relative Spectral Sensitivity vs. Wavelength
-20° -10° 0° 10° 20°
-30° 30°
-40° 40°
-50° 50°
-60° 60°
-70° 70°
-80° 80°
21947
0.1 0.3 0.5 0.7 0.9
Fig. 11 - Directivity
0.30
0.25
0.20
0.15
0.10
0.05
0.00
1
234
VS - Supply Voltage (V)
5
Fig. 12 - Sensitivity vs. Supply Voltage
Rev. 1.6, 10-Nov-15
4 Document Number: 82446
THIS DOCUMENT IS SUBJECT TO CHANGE WITHOUT NOTICE. THE PRODUCTS DESCRIBED HEREIN AND THIS DOCUMENT
ARE SUBJECT TO SPECIFIC DISCLAIMERS, SET FORTH AT www.vishay.com/doc?91000

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SUITABLE DATA FORMAT
The TSOP373.., TSOP375.. series is designed to suppress
spurious output pulses due to noise or disturbance signals.
The devices can distinguish data signals from noise due to
differences in frequency, burst length, and envelope duty
cycle. The data signal should be close to the device’s
band-pass center frequency (e.g. 38 kHz) and fulfill the
conditions in the table below.
When a data signal is applied to the TSOP373.., TSOP375..
in the presence of a disturbance, the sensitivity of the
receiver is automatically reduced by the AGC to insure that
no spurious pulses are present at the receiver’s output.
Some examples which are suppressed are:
• DC light (e.g. from tungsten bulbs sunlight)
• Continuous signals at any frequency
• Strongly or weakly modulated patterns from fluorescent
lamps with electronic ballasts (see Fig. 13 or Fig. 14)
TSOP373.., TSOP375..
Vishay Semiconductors
0
16920
5 10 15
Time (ms)
20
Fig. 13 - IR Signal from Fluorescent Lamp
with Low Modulation
0
16921
5 10 15
Time (ms)
20
Fig. 14 - IR Signal from Fluorescent Lamp
with High Modulation
Minimum burst length
After each burst of length
a minimum gap time is required of
For bursts greater than
a minimum gap time in the data stream is needed of
Maximum number of continuous short bursts/second
MCIR code
RCMM code
XMP-1, XMP-2 code
Suppression of interference from fluorescent lamps
TSOP373..
6 cycles/burst
6 to 35 cycles
10 cycles
35 cycles
> 6 x burst length
2000
Preferred
Preferred
Preferred
Mild and complex disturbance
patterns are suppressed (example:
signal pattern of Fig. 13 and 14)
TSOP375..
6 cycles/burst
6 to 24 cycles
10 cycles
24 cycles
> 25 ms
2000
Yes
Yes
Yes
Critical disturbance
patterns are suppressed,
e.g. highly dimmed LCDs
Note
• For data formats with long bursts (more than 10 carrier cycles) please see the datasheet for TSOP372.., TSOP374.. .
Rev. 1.6, 10-Nov-15
5 Document Number: 82446
THIS DOCUMENT IS SUBJECT TO CHANGE WITHOUT NOTICE. THE PRODUCTS DESCRIBED HEREIN AND THIS DOCUMENT
ARE SUBJECT TO SPECIFIC DISCLAIMERS, SET FORTH AT www.vishay.com/doc?91000