Document
TSOP12..SA1
Vishay Telefunken
Photo Modules for PCM Remote Control Systems
Available types for different carrier frequencies
Type TSOP1230SA1 TSOP1236SA1 TSOP1238SA1 TSOP1256SA1 fo 30 kHz 36 kHz 38 kHz 56 kHz Type TSOP1233SA1 TSOP1237SA1 TSOP1240SA1 fo 33 kHz 36.7 kHz 40 kHz
Description
The TSOP12..SA1 – 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.
13 645
Features
D Photo detector and preamplifier in one package D Internal filter for PCM frequency D Improved shielding against electrical field
disturbance
Special Features
D Enhanced immunity against all kinds of
disturbance light
D No occurrence of disturbance pulses at the
output
D D D D
TTL and CMOS compatibility Output active low Low power consumption Suitable burst length ≥10 cycles/burst
Block Diagram
2 Input Control Circuit 80 kW 3 PIN AGC Band Pass Demodulator 1 GND
94 8136
VS
OUT
Document Number 82017 Rev. 8, 30-Mar-01
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TSOP12..SA1
Vishay Telefunken Absolute Maximum Ratings
Tamb = 25_C Parameter Supply Voltage Supply Current Output Voltage Output Current Junction Temperature Storage Temperature Range Operating Temperature Range Power Consumption Soldering Temperature Test Conditions (Pin 2) (Pin 2) (Pin 3) (Pin 3) Symbol VS IS VO IO Tj Tstg Tamb Ptot Tsd Value –0.3...6.0 5 –0.3...6.0 5 100 –25...+85 –25...+85 50 260 Unit V mA V mA °C °C °C mW °C
(Tamb 85 °C) t 10 s, 1 mm from case
x
x
Basic Characteristics
Tamb = 25_C Parameter Supply (Pin 2) y Current ( ) Supply Voltage (Pin 2) Transmission Distance Output Voltage Low (Pin 3) Irradiance (30 – 40 kHz) Test Conditions VS = 5 V, Ev = 0 VS = 5 V, Ev = 40 klx, sunlight Ev = 0, test signal see fig.7, IR diode TSAL6200, IF = 400 mA IOSL = 0.5 mA,Ee = 0.7 mW/m2, f = fo, tp/T = 0.4 Pulse width tolerance: tpi – 5/fo < tpo < tpi + 6/fo, test signal see fig.7 Pulse width tolerance: tpi – 5/fo < tpo < tpi + 6/fo, test signal see fig.7 tpi – 5/fo < tpo < tpi + 6/fo Angle of half transmission distance Symbol ISD ISH VS d VOSL Ee min 0.35 Min 0.4 4.5 35 250 0.5 Typ 0.6 1.0 Max 1.5 5.5 Unit mA mA V m mV mW/m2
Irradiance (56 kHz)
Ee min
0.4
0.6
mW/m2
Irradiance Directivity
Ee max ϕ1/2
30 ±45
W/m2 deg
Application Circuit
2 TSOP12.. TSAL62.. 3 4.7 mF *)
100 W *) >10 kW optional **)
+5V
mC
1
12844
GND
*) recommended to suppress power supply disturbances **) The output voltage should not be hold continuously at a voltage below 3.3V by the external circuit.
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Document Number 82017 Rev. 8, 30-Mar-01
TSOP12..SA1
Vishay Telefunken Suitable Data Format
The circuit of the TSOP12..SA1 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. • 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..SA1 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..SA1 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 time [ms]
15
20
Figure A: IR Signal from Fluorescent Lamp with low Modulation
0
5
10 time [s]
15
20
Figure B: IR Signal from Fluorescent Lamp with high Modulation
Document Number 82017 Rev. 8, 30-Mar-01
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TSOP12..SA1
Vishay Telefunken Typical Characteristics (Tamb = 25_C unless otherwise specified)
Ee min – Threshold Irradiance ( mW/m2 ) 1.0 / e E – Rel. Responsitivity 0.8 2.0 f ( E ) = f0 1.6 1.2 0.8 0.4 0.0 0.7
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0.6
0.4 0.2 0.0 0.8 0.9 1.0 1.1 1.2 1.3 f / f0 – Relative Frequency
Df ( 3 dB ) = f0 / 10.