F M6038LM-5A ■ General Description The photo IC is a complete IR receiver for data communication developed and optimized for use in carrier frequency modulated transmission applications. Its function can be described using the block diagram (see figure 1). The input stage meets two main functions. First, it provides a suitable bias voltage for the PIN diode. Secondly, the pulsed photo-current signals are transformed into a voltage by a special circuit which is optimized for low noise applications. After amplification by a controlled gain amplifier (CGA), the signals have to pass a tuned integrated narrow bandpass filter.The demodulator is used to convert the input butst signal into a digital envelope output pulse and to evaluate the signal information quality,I.e. unwanted pulses will be suppressed at the output pin. All this is done by means of an integrated dynamic feedback circuit which varies the gain as a function of the present environ mental condition (ambient light, modulated lamps etc.). Other special features are used to adapt to the current application to secure best transmission quality. Features ■ • No external components except PIN diode •Supply-voltage range: 4.5V to 5.5V •Automatic sensitivity adaptation (AGC) •Automatic strong signal adaptation (ATC) •Enhanced immunity against ambient light disturbance •TTL and CMOS compatible •Suitable min. burst length ≥10 pulses/burst Application ■ •Audio video applications •Home appliances •Remote control equipment ■ Block Diagram Figure 1. VS IN OUT INPUT carrier frequency fo Oscillator CGA & filter Demodul ator AGC/ATC &digital control Modulater=d IR signal min 6/10 pulses GND uC F M6038LM-5A ■ Absolute Maximum Ratings (at 25 ℃ Unless otherwise note) Symbol Ratings Unit Supply voltage Vs -0.3 to 5.5 V Supply current Is 5 mA Input Voltage Vin -0.3 to Vs V Input DC current at Vs=5V Iin 0.6 mA Output voltage Vo -0.3 to 5.5 V Storage temp. Tstg -40 to +125 ℃ Operating temp. Tamb -25 to +85 ℃ Power dissipation at Tamb=25°C Ptot 30 mW Soldering temp. *1 Tsd 260 ℃ Parameter *1. t≦5s, 2mm from lead foundation. ■ Absolute Maximum Ratings Tamb= -25 to 85℃, Vs=4.5 to 5.5V unless otherwise specified. Parameter Test Condition Symbol Supply voltage Supply current(without Iin) Vs Iin=0 Internal pull-up resistor Output voltage low IOL=2mA Output voltage high Min Typ Max Unit 5.5 4.5 V Is 1 mA Rpu 30~40 kΩ VOL - 250 mV VOH Vs-0.25 Vs V 2 mA Max. DC output current R2=2.4kΩ Vodc Output current clamping R2=0 IocL Max. input DC current Vin=0 Vin 600 μA I100 I μA 1500 pA AC input current at 100 Hz 7.5 Detection threshold current signal square peak to peak 38KHz IEemin 500 Max. detection threshold current Signal is square pp IEemax 100 Frequency Center frequency zapping accuracy T=25 ℃ Center frequency of bandpass Arrival distance 200 ±50 Lux 0° 45° ± mA μA f - 38 fo fo-1.5% fo fo fo-3% fo fo+3% 10 15 - 7 10 - L - KHz fo+1.5% KHz KHz m F M6038LM-5A ● Ustration of used terms IN 1066 §Á 533 §Á 1 period(P=16) BURST(N=16 pulses) 7 16 OUT t DON t DOFF 33§Á 533 §Á ENVELOPE 1 17056 §Á / DATA WORD OUT TELEGRAM PAUSE DATA WORD DATA WORD 17 ms Tref =62ms Example:f=30kHz,burst with 16 pulses,16 periods ● Application circuit VDD=5V R1=220 R2>2.4K VS IN uC OUT GND C1=4.7 ● C1=470pF Test condition of arrival distance Vout osc Transmitter GND Vcc : Indicates horizontal and vertical directions [ Measurement condition for arrival distance ] Ambient light source : Detecting surface illumination shall be irradiate 200 50Lux under ordinary white fluorescence lamp without high frequency lighting Distance(%) Supply Current(?) F M- 6038LM-5A ■ ℃ ﹎ F M6038LM-5A NOTE: N OTE: 1. PI NCONFIG CONTI G. 1.PIN 1 Vout 2 GND (2)GND 3 Vcc (1)Vout (3)Vcc 2. G. T ¡ 0¾. 3 2.G.T± ( UNI T: 0.3 mm) (UNIT: mm) E3 1 2 3