Telefunken TSOP1233RF1, TSOP1256RF1, TSOP1236RF1, TSOP1230RF1, TSOP1238RF1 Datasheet
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TSOP12..RF1
Vishay Telefunken
Photo Modules for PCM Remote Control Systems
Available types for different carrier frequencies
Type fo Type fo
TSOP1230RF1 30 kHz TSOP1233RF1 33 kHz
TSOP1236RF1 36 kHz TSOP1237RF1 36.7 kHz
TSOP1238RF1 38 kHz TSOP1240RF1 40 kHz
TSOP1256RF1 56 kHz
Description
The TSOP12..RF1 – 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. The main benefit is the
reliable function even in disturbed ambient and the
protection against uncontrolled output pulses.
Features
D
Photo detector and preamplifier in one package
D
Internal filter for PCM frequency
D
Improved shielding against electrical field
disturbance
D
TTL and CMOS compatibility
D
Output active low
D
Low power consumption
D
Suitable burst length ≥10 cycles/burst
Block Diagram
Input
PIN
AGC
Special Features
D
Enhanced immunity against all kinds of
disturbance light
D
No occurrence of disturbance pulses at the
output
Control
Circuit
Band
Pass
Demodu-
lator
80 k
13 640
2
V
S
W
3
OUT
1
GND
94 8136
Document Number 82016
www.vishay.com
1 (8)Rev. 8, 30 Mar-01
TSOP12..RF1
y()
Vishay Telefunken
Absolute Maximum Ratings
T
= 25_C
amb
Parameter Test Conditions Symbol Value Unit
Supply Voltage (Pin 2) V
Supply Current (Pin 2) I
Output Voltage (Pin 3) V
Output Current (Pin 3) I
Junction Temperature T
Storage Temperature Range T
Operating Temperature Range T
Power Consumption (T
Soldering Temperature t x 5 s T
Basic Characteristics
T
= 25_C
amb
Parameter Test Conditions Symbol Min Typ Max Unit
Supply Current (Pin 2) VS = 5 V, Ev = 0 I
VS = 5 V, Ev = 40 klx, sunlight I
Supply Voltage (Pin 2) V
Transmission Distance Ev = 0, test signal see fig.7,
IR diode TSAL6200, IF = 400 mA
Output Voltage Low (Pin 3) I
Irradiance (30 – 40 kHz) Pulse width tolerance:
Irradiance (56 kHz) Pulse width tolerance:
Irradiance tpi – 5/fo < tpo < tpi + 6/f
Directivity Angle of half transmission distance ϕ
= 0.5 mA,Ee = 0.7 mW/m2,
OSL
f = fo, tp/T = 0.4
tpi – 5/fo < tpo < tpi + 6/fo,
test signal see fig.7
tpi – 5/fo < tpo < tpi + 6/fo,
test signal see fig.7
x 85 °C) P
amb
o
SD
SH
S
d 35 m
V
OSL
E
e min
E
e min
E
e max
1/2
S
S
O
O
j
stg
amb
tot
sd
–0.3...6.0 V
5 mA
–0.3...6.0 V
5 mA
100
–25...+85
–25...+85
50 mW
260
0.4 0.6 1.5 mA
1.0 mA
4.5 5.5 V
250 mV
0.35 0.5 mW/m
0.4 0.6 mW/m
30 W/m
±45 deg
°
C
°
C
°
C
°
C
2
2
2
Application Circuit
100 W *)
2
3
1
4.7 mF *)
>10 k
optional
**)
W
m
C
GND
Document Number 82016
TSOP12..
TSAL62..
12844
*) recommended to suppress power supply disturbances
**) The output voltage should not be hold continuously at a voltage below 3.3V by the external circuit.
www.vishay.com
2 (8)
+5V
Rev. 8, 30-Mar-01
Suitable Data Format
The circuit of the TSOP12..RF1 is designed in that
way that unexpected output pulses due to noise or
disturbance signals are avoided. A bandpassfilter, an
integrator stage and an automatic gain control are
used to suppress such disturbances.
The distinguishing mark between data signal and
disturbance signal are carrier frequency, burst length
and duty cycle.
The data signal should fullfill the following condition:
• Carrier frequency should be close to center
frequency of the bandpass (e.g. 38kHz).
• 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 neccessary.
• For each burst which is longer than 1.8ms a
corresponding gap time is necessary at some time in
the data stream. This gap time should be at least 4
times longer than the burst.
TSOP12..RF1
Vishay Telefunken
• 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.
When a disturbance signal is applied to the
TSOP12..RF1 it can still receive the data signal.
However the sensitivity is reduced to that level that no
unexpected pulses will occure.
Some examples for such disturbance signals which
are suppressed by the TSOP12..RF1 are:
• DC light (e.g. from tungsten bulb or sunlight)
• Continuous signal at 38kHz or at any other
frequency
• Signals from fluorescent lamps with electronic
ballast with high or low modulation (see Figure A or
Figure B).
0 5 10 15 20
time [ms]
Figure A: IR Signal from Fluorescent Lamp with low Modulation
0 5 10 15 20
time [s]
Figure B: IR Signal from Fluorescent Lamp with high Modulation
Document Number 82016
www.vishay.com
3 (8)Rev. 8, 30 Mar-01
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