TSOP942.., TSOP944..
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Rev. 1.2, 11-Dec-2018 1Document Number: 82834
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IR Receiver Modules for Remote Control Systems
DESIGN SUPPORT TOOLS
FEATURES
• Improved dark sensitivity
• Improved immunity against optical noise
• Very low supply current
• Photo detector and preamplifier in one package
• Internal filter for PCM frequency
• Supply voltage: 2.0 V to 3.6 V
• Insensitive to supply voltage ripple and noise
• Material categorization:
for definitions of compliance please see
www.vishay.com/doc?99912
MECHANICAL DATA
1 = OUT, 2 = GND, 3 = VS
DESCRIPTION
The TSOP94... series devices are the latest generation miniaturized IR receiver modules for infrared remote control systems.
These series provide improvements in sensitivity to remote control signals in dark ambient as well as in sensitivity in the
presence of optical disturbances e.g. from CFLs.
The devices contain a PIN diode and a preamplifier assembled on a lead frame. The epoxy package contains an IR filter. The
demodulated output signal can be directly connected to a microprocessor for decoding.
The TSOP942.. and TSOP944.., series devices are designed to receive long burst codes (10 or more carrier cycles per burst).
The third digit designates the AGC level (AGC2 or AGC4) and the last two digits designate the band-pass frequency (see table
below). The higher the AGC, the better noise is suppressed, but the lower the code compatibility. AGC2 provides basic noise
suppression and AGC4 provides enhanced noise suppression. Generally, we advise to select the highest AGC that satisfactorily
receives the desired remote code.
These components have not been qualified to automotive specifications.
Notes
• 30 kHz and 33 kHz only available on written request
• See datasheet for TSOP946.. for preferred devices for (2)(3)(4)(5)(10)
16672
1
2
3
2
3
click logo to get started
Available
Models
PARTS TABLE
AGC BASIC NOISE SUPPRESSION
(AGC2)
ENHANCED NOISE SUPPRESSION
(AGC4)
Carrier frequency
30 kHz TSOP94230 TSOP94430
33 kHz TSOP94233 TSOP94433
36 kHz TSOP94236 TSOP94436 (6)
38 kHz TSOP94238 TSOP94438 (9)
40 kHz TSOP94240 (11) TSOP94440
56 kHz TSOP94256 (1) TSOP94456 (7)(8)
Package Mold
Pinning 1 = OUT, 2 = GND, 3 = VS
Dimensions (mm) 6.0 W x 6.95 H x 5.6 D
Mounting Leaded
Application Remote control
Best choice for (1) Cisco (2) Mitsubishi (3) NEC (4) Panasonic (5) RC-5 (6) RC-6
(7) RCA (8) r-step (9) Sejin 4PPM (10) Sharp (11) Sony
TSOP942.., TSOP944..
www.vishay.com Vishay Semiconductors
Rev. 1.2, 11-Dec-2018 2Document Number: 82834
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BLOCK DIAGRAM APPLICATION CIRCUIT
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
30 kΩ
2
3
1
Demo-
pass
AGCInput
PIN
Band dulator
Control circuit
16833-13
C1
IR receiver
GND
Circuit
μC
R1
+ VS
GND
Transmitter
with
TSALxxxx VS
VO
17170-12
OUT
R1 and C1 recommended to reduce supply ripple for VS < 2.2 V
ABSOLUTE MAXIMUM RATINGS
PARAMETER TEST CONDITION SYMBOL VALUE UNIT
Supply voltage VS-0.3 to +3.6 V
Supply current IS3mA
Output voltage VO-0.3 to (VS + 0.3) V
Output current IO5mA
Junction temperature Tj100 °C
Storage temperature range Tstg -25 to +85 °C
Operating temperature range Tamb -25 to +85 °C
Power consumption Tamb ≤ 85 °C Ptot 10 mW
Soldering temperature t ≤ 10 s, 1 mm from case Tsd 260 °C
ELECTRICAL AND OPTICAL CHARACTERISTICS (Tamb = 25 °C, unless otherwise specified)
PARAMETER TEST CONDITION SYMBOL MIN. TYP. MAX. UNIT
Supply current Ev = 0, VS = 3.3 V ISD 0.25 0.37 0.45 mA
Ev = 40 klx, sunlight ISH -0.50- mA
Supply voltage VS2.0 - 3.6 V
Transmission distance Ev = 0, test signal see Fig. 1,
IR diode TSAL6200, IF = 50 mA d-32-m
Output voltage low IOSL = 0.5 mA, Ee = 0.7 mW/m2,
test signal see Fig. 1 VOSL - - 100 mV
Minimum irradiance Test signal: NEC code Ee min. - 0.07 0.15 mW/m2
Maximum irradiance tpi - 4/f0 < tpo < tpi + 4/f0,
test signal see Fig. 1 Ee max. 30 - - W/m2
Directivity Angle of half transmission
distance ϕ1/2 -± 45- °
TSOP942.., TSOP944..
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Rev. 1.2, 11-Dec-2018 3Document Number: 82834
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TYPICAL CHARACTERISTICS (Tamb = 25 °C, unless otherwise specified)
Fig. 1 - Output Delay and Pulse-Width
Fig. 2 - Pulse-Width vs. Irradiance in Dark Ambient
Fig. 3 - Test Signal
Fig. 4 - Pulse-Width vs. Irradiance in Dark Ambient
Fig. 5 - Frequency Dependence of Responsivity
Fig. 6 - Sensitivity in Bright Ambient
Ee
T
tpi (1)
t
VO
VOH
VOL
t
Optical Test Signal
(IR diode TSAL6200, 30 pulses, f = f0, T = 10 ms)
Output Signal
td (2) tpo (3)
(2) AGC4: 7/f0 < td < 13/f0
AGC2: 11/f0 < td < 17/f0
(3) tpi - 4/f0 < tpo < tpi + 4/f0
16110-10
(1) AGC4: tpi ≥ 10/f0, AGC2: tpi ≥ 16/f0
10
100
1000
10000
0.60
0.65
0.70
0.75
0.80
0.85
0.90
0.1 10 1000 100 000
Axis Title
1st line
2nd line
2nd line
tpo - Output Pulse Width (ms)
Ee- Irradiance (mW/m2)
Output pulse width
Input burst length
λ= 950 nm,
optical test signal, Fig. 1
E
e
t
V
O
V
OH
V
OL
t
600 µs 600 µs
t = 60 ms
t
on
t
off
94 8134
Optical Test Signal
Output Signal, (see Fig. 4)
10
100
1000
10000
0
0.1
0.2
0.3
0.4
0.5
0.6
0.7
0.8
0.1 1 10 100 1000 10 000 100 000
Axis Title
1st line
2nd line
2nd line
ton, toff - Output Pulse Width (ms)
Ee- Irradiance (mW/m2)
ton
toff
λ= 950nm,
optical test signal, Fig. 3
10
100
1000
10000
0
0.2
0.4
0.6
0.8
1.0
1.2
0.7 0.9 1.1 1.3
Axis Title
1st line
2nd line
2nd line
Ee min./Ee- Relative Responsivity
f/f0- Relative Frequency
f = f
0
±5 %
∆f (3 dB) = f
0
/10
10
100
1000
10000
0
1
2
3
4
0.01 0.1 1 10 100
Axis Title
1st line
2nd line
2nd line
Ee min. - Threshold Irradiance (mW/m2)
Ee- Ambient DC Irradiance (W/m2)
Correlation with ambient light sources:
10 W/m2= 1.4 klx (std. ilum. A, T = 2855 K)
10 W/m2= 8.2 klx (daylight, T = 5900 K)
Wavelength of ambient
illumination: λ = 950 nm
TSOP942.., TSOP944..
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Rev. 1.2, 11-Dec-2018 4Document Number: 82834
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Fig. 7 - Sensitivity vs. Supply Voltage Disturbances
Fig. 8 - Max. Envelope Duty Cycle vs. Burst Length
Fig. 9 - Sensitivity vs. Ambient Temperature
Fig. 10 - Relative Spectral Sensitivity vs. Wavelength
Fig. 11 - Directivity
Fig. 12 - Sensitivity vs. Supply Voltage
10
100
1000
10000
0
0.1
0.2
0.3
0.4
0.5
0.6
0.7
0.8
0.9
1.0
1 10 100 1000
Axis Title
1st line
2nd line
2nd line
E
e min.
- Threshold Irradiance (mW/m
2
)
∆V
S RMS
- AC Voltage on DC Supply Voltage (mV)
f = 100 Hz
f = 10 kHz
f = 30 kHz
f = f0
10
100
1000
10000
0
0.1
0.2
0.3
0.4
0.5
0.6
0.7
0.8
0.9
0 20406080100120
Axis Title
1st line
2nd line
2nd line
Maximum Envelope Duty Cycle
Burst Length (Number of Cycles/Burst)
TSOP944..
TSOP942..
f = 38 kHz, Ee= 2 mW/m2
10
100
1000
10000
0
0.05
0.10
0.15
0.20
0.25
0.30
-30 -10 10 30 50 70 90
Axis Title
1st line
2nd line
2nd line
Ee min. - Threshold Irradiance (mW/m2)
Tamb - Ambient Temperature (°C)
10
100
1000
10000
0
0.1
0.2
0.3
0.4
0.5
0.6
0.7
0.8
0.9
1.0
750 850 950 1050 1150
Axis Title
1st line
2nd line
2nd line
S(λ)rel. - Relative Spectral Sensitivity
λ - Wavelength (nm)
1.0
30°
10
100
1000
10000
0
0.05
0.10
0.15
0.20
0.25
1.0 1.5 2.0 2.5 3.0 3.5 4.0
Axis Title
1st line
2nd line
2nd line
Ee min. - Threshold Irradiance (mW/m2)
VS- Supply Voltage (V)
TSOP942.., TSOP944..
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Rev. 1.2, 11-Dec-2018 5Document Number: 82834
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SUITABLE DATA FORMAT
This 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 product 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)
Fig. 13 - IR Emission from Fluorescent Lamp
With Low Modulation
Fig. 14 - IR Emission from Fluorescent Lamp
With High Modulation
Note
• For data formats with short bursts please see the datasheet for TSOP943.., TSOP945..
16920
10
100
1000
10000
0
1
2
3
4
5
6
7
0 5 10 15 20
Axis Title
1st line
2nd line
2nd line
IR Signal Amplitude
Time (ms)
16921
10
100
1000
10000
-60
-40
-20
0
20
40
0 5 10 15 20
Axis Title
1st line
2nd line
2nd line
IR Signal Amplitude
Time (ms)
TSOP942.. TSOP944..
Minimum burst length 16 cycles/burst 10 cycles/burst
After each burst of length
a minimum gap time is required of
16 to 70 cycles
≥ 16 cycles
10 to 40 cycles
≥ 12 cycles
For bursts greater than
a minimum gap time in the data stream is needed of
70 cycles
> 6 x burst length
40 cycles
> 10 x burst length
Maximum number of continuous short bursts/second 1000 1800
RC-5 code Yes Yes
RC-6 code Yes Preferred
NEC code Yes Yes
r-step code 56 kHz No Preferred
Sony code Preferred No
RCA 56 kHz code Yes Preferred
Mitsubishi code 38 kHz Yes Yes
Suppression of interference from fluorescent lamps Fig. 13 Fig. 13 and Fig. 14
TSOP942.., TSOP944..
www.vishay.com Vishay Semiconductors
Rev. 1.2, 11-Dec-2018 6Document Number: 82834
THIS DOCUMENT IS SUBJECT TO CHANGE WITHOUT NOTICE. THE PRODUCTS DESCRIBED HEREIN AND THIS DOCUMENT
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PACKAGE DIMENSIONS in millimeters
Not indicated tolerances ± 0.2
Drawing-No.: 6.550-5169.01-4
Issue: 9; 03.11.10
13655
specications
according to DIN
technical drawings
3.9
0.5 max.
1.3
4.1
6
0.85 max.
0.89
1
1
8.25
(5.55)
6.95
5.3
30.5 ± 0.5
2.54 nom.
2.54 nom.
0.7 max.
5.6
marking area
R 2.5
Legal Disclaimer Notice
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Revision: 01-Jan-2021 1Document Number: 91000
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