TSOP2840QJ1中文资料
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f = fo 10.0 10 kHz 1 kHz 1.0
0.6
0.4 0.2 0.0 0.7 0.8 0.9 1.0 1.1 1.2 1.3
Df ( 3 dB ) = f0 / 7
f / f0 – Relative Frequency
f = f0
"5%
eE min
100 Hz 0.1 0.1 1.0 10.0 100.0 1000.0
94 9102
96 12215
DVs RMS – AC Voltage on DC Supply Voltage (mV)
Figure 1. Frequency Dependence of Responsivity
12
14
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18
20
Figure B: Disturbance Signal from Fluorescent Lamp with Signal Gap Time of 7ms (suppressed by TSOP28..)
Document Number 82060 Rev. 4, 06-Jun-00 www.vishay.de • FaxBack +1-408-970-5600 3 (7)
Document Number 82060 Rev. 4, 06-Jun-00
元器件交易网
TSOP28..QJ1
Vishay Telefunken Suitable Data Format
The circuit of the TSOP28..QJ1 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 ( not suppressed) and disturbance signal (supressed) are carrier frequency, burst length and Signal Gap Time (see diagram below). 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 6 cycles/burst or longer. • After each burst a gap time of at least 10 cycles is neccessary. • The data format should not make a continuous signal transmission. There must be a Signal Gap Time (longer than 15ms) at least each 90ms (see Figure A). Some examples for suitable data format are: NEC Code (repetitive pulse), NEC Code (repetitive data), Toshiba Micom Format, Sharp Code, RC5 Code, RECS–80 Code, R–2000 Code. When a disturbance signal is applied to the TSOP28..QJ1 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 TSOP28..QJ1 are: • DC light (e.g. from tungsten bulb or sunlight), • Continuous signal at 38kHz or at any other frequency, • Signals from fluorescent lamps (see Figure B). • Continuous IR signal (e.g. 1ms burst, 2ms pause)
元器件交易网
TSOP28..QJ1
Vishay Telefunken
Photo Modules for PCM Remote Control Systems
Available types for different carrier frequencies
Type TSOP2830QJ1 TSOP2836QJ1 TSOP2838QJ1 TSOP2856QJ1 fo 30 kHz 36 kHz 38 kHz 56 kHz Type TSOP2833QJ1 TSOP2837QJ1 TSOP2840QJ1 fo 33 kHz 36.7 kHz 40 kHz
output
D Suitable burst length ≥6 cycles/burst
Block Diagram
2 Input Control Circuit 30 kW 1 PIN AGC Band Pass Demodulator 3 GND OUT VS
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Document Number 82060 Rev. 4, 06-Jun-00
Signal Gap Time
0
10
20
30
40
50 time [ms]
60
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80
90
100
Figure A: Data Signal (Output of IR Receiver) with a Signal Gap Time of 20ms
Signal Gap Time
0
2
ቤተ መጻሕፍቲ ባይዱ
4
6
8
10 time [ms]
Description
The TSOP28..QJ1 – 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.
元器件交易网
TSOP28..QJ1
Vishay Telefunken Typical Characteristics (Tamb = 25_C unless otherwise specified)
1.0 0.8 E e min – Threshold Irradiance (mW/m2 ) /eE – Rel. Responsitivity 100.0
Application Circuit
100 W *) 2 TSOP28..QJ1 TSAL62.. 1 4.7 mF *) >10 kW optional +5V
mC
3 GND
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*) recommended to suppress power supply disturbances
www.vishay.de • FaxBack +1-408-970-5600 2 (7)
(Tamb 85 °C) t 10 s, 1 mm from case
x
x
Basic Characteristics
Tamb = 25_C Parameter Supply Current ( y (Pin 2) ) Supply Voltage (Pin 2) Transmission Distance Output Voltage Low (Pin 1) Irradiance (30 – 40 kHz) Irradiance (56 kHz) Irradiance Directivity Test Conditions VS = 5 V, Ev = 0 VS = 5 V, Ev = 40 klx, sunlight Ev = 0, test signal see fig.6, IR diode TSAL6200, IF = 300 mA IOL = 0.5 mA,Ee = 0.7 mW/m2, f = fo Pulse width tolerance: tpi – 4/fo < tpo < tpi + 6/fo, test signal see fig.6 Angle of half transmission distance Symbol ISD ISH VS d VOL Ee min Ee min Ee max ϕ1/2 30 ±45 0.3 0.4 Min 0.9 4.5 35 250 0.5 0.7 Typ 1.2 1.2 Max 1.5 5.5 Unit mA mA V m mV mW/m2 mW/m2 W/m2 deg
