Document Number: 81363 www.vishay.com
Rev. 1.2, 17-Nov-09 1
IR Receiver Modules for Remote Control Systems
New TSOP12238
Vishay Semiconductors
MECHANICAL DATA
Pinning
1 = OUT, 2 = VS, 3 = GND
FEATURES
• Low supply current
• Photo detector and preamplifier in one
package
• Internal filter for PCM frequency
• Improved shielding against EMI
• Supply voltage: 2.7 V to 5.5 V
• Improved immunity against ambient light
• Insensitive to supply voltage ripple and noise
• Compliant to RoHS directive 2002/95/EC and in
accordance to WEEE 2002/96/EC
DESCRIPTION
The TSOP12238 is a miniaturized receiver for infrared
remote control systems. A PIN diode and a preamplifier are
assembled on a lead frame, the epoxy package acts as an
IR filter.
The demodulated output signal can be directly decoded by
a microprocessor. The TSOP12238 is compatible with all
common IR remote control data formats.
This component has not been qualified according to
automotive specifications.
BLOCK DIAGRAM APPLICATION CIRCUIT
16672
1
2
3
PARTS TABLE
CARRIER FREQUENCY STANDARD APPLICATIONS (AGC2/AGC8)
38 kHz TSOP12238
33 kΩ
3
2
1
V
S
OUT
Demo-
GND
pass
AGCInput
PIN
Band
dulator
Control circuit
16833_7
C
1
IR receiver
GND
Circuit
µC
R
1
+ V
S
GND
Transmitter
with
TSALxxxx V
S
V
O
17170_7
OUT
The external components R
1
and C
1
are optional
to improve the robustnes against electrical overstress
(typical values are R
1
= 100 Ω, C
1
= 0.1 µF).
The output voltage VO should not be pulled down to a level
below 1 V by the external circuit.
The capacitive load at the output should be less than 2 nF.
www.vishay.com Document Number: 81363
2Rev. 1.2, 17-Nov-09
New TSOP12238
Vishay Semiconductors IR Receiver Modules for Remote
Control Systems
Note
(1) 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.
Note
(1) Tamb = 25 °C, unless otherwise specified
TYPICAL CHARACTERISTICS
Tamb = 25 °C, unless otherwise specified
Fig. 1 - Output Active Low Fig. 2 - Pulse Length and Sensitivity in Dark Ambient
ABSOLUTE MAXIMUM RATINGS (1)
PARAMETER TEST CONDITION SYMBOL VALUE UNIT
Supply voltage (pin 2) VS- 0.3 to + 6 V
Supply current (pin 2) IS5mA
Output voltage (pin 1) VO- 0.3 to 5.5 V
Voltage at output to supply VS - VO- 0.3 to (VS + 0.3) V
Output current (pin 1) 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 (1)
PARAMETER TEST CONDITION SYMBOL MIN. TYP. MAX. UNIT
Supply current (pin 2) Ev = 0, VS = 5 V ISD 0.65 0.85 1.05 mA
Ev = 40 klx, sunlight ISH 0.95 mA
Supply voltage VS2.7 5.5 V
Transmission distance
Ev = 0, test signal see fig. 1,
IR diode TSAL6200,
IF = 400 mA
d45m
Output voltage low (pin 1) IOSL = 0.5 mA, Ee = 0.7 mW/m2,
test signal see fig. 1 VOSL 100 mV
Minimum irradiance
Pulse width tolerance:
tpi - 5/fo < tpo < tpi + 6/fo,
test signal see fig. 1
Ee min. 0.17 0.35 mW/m2
Maximum irradiance tpi - 5/fo < tpo < tpi + 6/fo,
test signal see fig. 1 Ee max. 30 W/m2
Directivity Angle of half transmission
distance ϕ1/2 ± 45 deg
E
e
T
t
pi
*
t
* t
pi
10/f
0
is recommended for optimal function
V
O
V
OH
V
OL
t
16110
Optical Test Signal
(IR diode TSAL6200, I
F
= 0.4 A, 30 pulses, f = f
0
, t = 10 ms)
Output Signal
t
d1)
t
po 2)
1)
7/f
0
<t
d
<15/f
0
2)
t
pi
- 5/f
0
<t
po
< t
pi
+ 6/f
0
1
0.2
0.3
0.4
0.5
0.6
0.7
0.8
0.9
0.1 1 10 102103104105
E
e
- Irradiance (mW/m
2
)
t
po
- Output Pulse Width (ms)
21391
Input Burst Length
Output Pulse Width
λ = 950 nm,
Optical Test Signal, Fig.1
Document Number: 81363 www.vishay.com
Rev. 1.2, 17-Nov-09 3
New TSOP12238
IR Receiver Modules for Remote
Control Systems Vishay Semiconductors
Fig. 3 - Output Function
Fig. 4 - Output Pulse Diagram
Fig. 5 - Frequency Dependence of Responsivity
Fig. 6 - Sensitivity in Bright Ambient
Fig. 7 - Sensitivity vs. Supply Voltage Disturbances
Fig. 8 - Sensitivity vs. Electric Field Disturbances
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)
0
0.1
0.2
0.3
0.4
0.5
0.6
0.7
0.8
0.1 1 10 102103104105
Ee - Irradiance (mW/m2)
Ton, Toff - Output Pulse Width (ms)
21392
λ = 950 nm,
Optical Test Signal, Fig. 3
Ton
Toff
0.0
0.2
0.4
0.6
0.8
1.0
1.2
0.7 0.9 1.1 1.3
f/f0 - Relative Frequency16925
f = f0 ± 5 %
Δ f(3 dB) = f0/10
E /E - Rel. Responsivity
e min. e
E
e min.
- Threshold Irradiance (mW/m
2
)
0
1
1.5
4.5
0.5
2
2.5
3
3.5
4
5
E
e
- Ambient DC Irradiance (W/m
2
)
0.01 0.1 1 10 100
21393_1
Wavelength of Ambient
Illumination: l = 950 nm
Correlation with Ambient Light Sources:
10 W/m2 = 1.4 kLx (Std. illum. A, T = 2855 K)
10 W/m2 = 8.2.kLx (Daylight, T = 5900 K)
0
0.1
0.2
0.3
0.4
0.5
0.6
0.7
1 10 100 1000
ΔVsRMS - AC Voltage on DC Supply Voltage (mV)
21394_1
Ee min. - Threshold Irradiance (mW/m2)
f = f0
f = 30 kHz
f = 20 kHz
f = 10 kHz
f = 100 Hz
0
50
100
150
200
250
300
350
400
450
500
0 500 1000 1500 2000 2500 3000
f - EMI Frequency (MHz)
E - Max. Field Strength (V/m)
20747
www.vishay.com Document Number: 81363
4Rev. 1.2, 17-Nov-09
New TSOP12238
Vishay Semiconductors IR Receiver Modules for Remote
Control Systems
Fig. 9 - Max. Envelope Duty Cycle vs. Burst Length
Fig. 10 - Sensitivity vs. Ambient Temperature
Fig. 11 - Relative Spectral Sensitivity vs. Wavelength
Fig. 12 - Horizontal Directivity
Fig. 13 - Sensitivity vs. Supply Voltage
0
0.1
0.2
0.3
0.4
0.5
0.6
0.7
0.8
0 20 40 60 80 100 120
Burst Length (Number of Cycles/Burst)
Max. Envelope Duty Cycle
21396_2
140
E
e
= 2 mW/m
2
Tamb - Ambient Temperature (°C)
Ee min. - Threshold Irradiance (mW/m²)
21397_1
0
0.05
0.1
0.15
0.2
0.25
0.3
- 30 - 10 10 30 50 70 90
0.0
0.2
0.4
0.6
0.8
1.0
1.2
750 850 950 1050 1150
λ- Wavelength (nm)
16919
S ( ) - Relative Spectral Sensitivityλrel
96 12223p2
0.4 0.2 00.6
0.9
0°
30°
10° 20°
40°
50°
60°
70°
80°
1.0
0.8
0.7
d
rel
- Relative Transmission Distance
0
0.05
0.1
0.15
0.2
0.25
0.4
1.5 2.5 3.5 4.5 5.5
VS - Supply Voltage (V)
Ee min. - Sensitivity (mW/m2)
21398_1
0.3
0.35
Document Number: 81363 www.vishay.com
Rev. 1.2, 17-Nov-09 5
New TSOP12238
IR Receiver Modules for Remote
Control Systems Vishay Semiconductors
SUITABLE DATA FORMAT
The TSOP12238 is designed to suppress spurious output
pulses due to noise or disturbance signals. Data and
disturbance signals can be distinguished by the devices
according to carrier frequency, burst length and envelope
duty cycle. The data signal should be close to the
band-pass center frequency (e.g. 38 kHz) and fulfill the
conditions in the table below.
When a data signal is applied to the TSOP12238 in the
presence of a disturbance signal, the sensitivity of the
receiver is reduced to insure that no spurious pulses are
present at the output. Some examples of disturbance
signals which are suppressed are:
• DC light (e.g. from tungsten bulb or sunlight)
• Continuous signals at any frequency
• Strongly or weakly modulated noise from fluorescent
lamps with electronic ballasts (see figure 14 or figure 15)
Fig. 14 - IR Signal from Fluorescent Lamp
with Low Modulation
Fig. 15 - IR Signal from Fluorescent Lamp
with High Modulation
Note
For data formats with short bursts please see the datasheet of TSOP21.., TSOP23.. .
0101520
Time (ms)
16920
IR Signal
IR Signal from Fluorescent
Lamp with Low Modulation
5
0101520
Time (ms)
16921
IR Signal
IR Signal from Fluorescent
Lamp with High Modulation
5
TSOP12238
Minimum burst length 10 cycles/burst
After each burst of length
a minimum gap time is required of
10 to 70 cycles
≥ 12 cycles
For bursts greater than
a minimum gap time in the data stream is needed of
70 cycles
> 4 x burst length
Maximum number of continuous short bursts/second 800
Recommended for NEC code Yes
Recommended for Mitsubishi code
(38 kHz, preburst 8 ms, 16 bit) Yes
Recommended for Sharp code Yes
Suppression of interference from fluorescent lamps Most common disturbance signals are suppressed
www.vishay.com Document Number: 81363
6Rev. 1.2, 17-Nov-09
New TSOP12238
Vishay Semiconductors IR Receiver Modules for Remote
Control Systems
PACKAGE DIMENSIONS in millimeters
13655
Document Number: 91000 www.vishay.com
Revision: 18-Jul-08 1
Disclaimer
Legal Disclaimer Notice
Vishay
All product specifications and data are subject to change without notice.
Vishay Intertechnology, Inc., its affiliates, agents, and employees, and all persons acting on its or their behalf
(collectively, “Vishay”), disclaim any and all liability for any errors, inaccuracies or incompleteness contained herein
or in any other disclosure relating to any product.
Vishay disclaims any and all liability arising out of the use or application of any product described herein or of any
information provided herein to the maximum extent permitted by law. The product specifications do not expand or
otherwise modify Vishay’s terms and conditions of purchase, including but not limited to the warranty expressed
therein, which apply to these products.
No license, express or implied, by estoppel or otherwise, to any intellectual property rights is granted by this
document or by any conduct of Vishay.
The products shown herein are not designed for use in medical, life-saving, or life-sustaining applications unless
otherwise expressly indicated. Customers using or selling Vishay products not expressly indicated for use in such
applications do so entirely at their own risk and agree to fully indemnify Vishay for any damages arising or resulting
from such use or sale. Please contact authorized Vishay personnel to obtain written terms and conditions regarding
products designed for such applications.
Product names and markings noted herein may be trademarks of their respective owners.
