SL2055 AUK | Alldatasheet

Document overview

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Technical content

Features

  • Built-in filter enable to vary center frequency by an external resistance (fo=30KHz to 80KHz, 38KHz typ.)
  • Possible to direct connection to a photo diode.
  • Open collector output(directly connectable to TTL and CMOS)
  • Internal pull-up resistance and power filter resistance(low-capacitance)
  • Less chances of malfunction associated with a high frequency lighting floure internal trap circuit

Ordering Information

Type NO. Marking Package Code SL2055 SL2055 SOP-8 O u t l i n e D i m e n s i o n s u n i t : mm SSeemmiiccoonndduuccttoorr

Maximum Ratings (Ta = 25°C) Characteristics Symbol Rating Unit Supply Voltage Vcc 17 V Input Voltage V IN 5 Vp-p Operating Temperature Tope -20 ~ 75 °C Storage Temperature Tstg -55 ~ 150 °C Allowable Power Dissipation Pd 270 mW Block Diagram PIN Description Pin. No Symbol Pin Voltage Description 1 Vcc1 5.0 The Power Supply Voltage 2 Out 5.0 Active Low Output Termin al and an Open Collector Output

3 Vcc2 The Power Output Voltage

4 fo 1.4 Setting the Center Frequency of the Built-in BPF

5 GND - Ground

6 Cd 1.5 The Detection Capacitor for the most Output Pulse Width Variation and Noise Reduction 7 IN- 2.5 Setting the Frequency Characte ristics and Gain of the Head Amplifier 8 IN+ 2.5 The input Signal Internal Impedance : 75KΩ (typ.) SL2055 IN+ WAVEFORM SHAPER ABLC BPF TRAP VC C 2fo RS VC C 1 RL OUT CdGNDIN- HEAD AMP LIMITER DETECTOR

Electrical Characteristics(VCC=5V , Ta=25 °C) Test Condition Test Rating Item Symbol Input Signal ON-SW Pin Min. Typ. Max. Unit Remark Input Pin Vol1 Vin1 1 8 2.0 2.5 3.1 V Input Pin Vol2 Vin2 Iin=300µ A 1,4,6 8 0.6 0.9 1.7 V Output Voltage (Low Level) VOL V P6=1V 3,5 2 - 0.2 0.4 V Consumption Current ICC 1,5 1 1.0 1.9 2.8 mA Input Impedance Zin fin=38KHz,CW, Vin=0.2VPP 1,4,8 8 45 75 125 KΩ Note1 Voltage Gain Av fin=38KHz Vin=30µVpp 2,4,7,8 6 68 - 82 dB BPF Bandwidth f BW -3dB Bandwidth Vin=30µVPP Detecting Ability(1) T PW1 fin=38KHz Vin=60µVPP, Burst Wave 1,4,7,8 2 440 540 770 µSec Note2 Detecting Ability(1) T PW2 fin=38KHz Vin=50mVPP, Burst Wave 1,4,7,8 2 440 660 770 µSec Note2 Note) 1.Zin =75/[(Vi/Vx)-1] Vi : Input Level, Vx : Measured Value 2.Input a Burst Wave Signal of 1.2mSec Cycle, 38kHz SL2055

47μF SW1 SW2 SW3 SW4 SW6 SW5 SW7 SW8 VC C 470nF 50Ω 470㎋ 75K IN 300μA 100Ω 1800pFR6 290KC6 0.01μF SIGNAL GENERATOR 130K SL 2055 1 2 3 4 578 6 OUT 47μF 1800pF 0 ~ 1KΩ 0. 01μF 130K POWER SUPPLY PHOTO DIODE SL2055 SL2055

IN + (input pin) Connect a photodiode with pin structure between the pin8 and GND. An ABLC (Automatic Bias Level Control)circuit is built into the input section to prevent the input level from being saturated by the external disturbing lights, such that this circuit is actuated by a strong external disturbing light to fix the bias level of the input terminal. IN – (head amplifier gain setting pin) Connect a resistor and a capacitor in series between the pin7 and GND for setting the frequency characteristics and gain of the head amplifier. Increasing the value of a resistor or decreasi ng the value of a capacitor, the gain becomes small. When the capacitance is large the sensitivity is lowered against the transient response. Cd (detector capacitor connector pin) Connect the capacitor to detect between the pin6 to GND. When capacitance is large detected value is to the average, when it is small detected value is closer to the peak and output pulse width became, so that the most proper output pulse width variation and noise reduction characteristics can be obtained. GND (ground pin) Fo (BPF central or frequency setting pin) Connect a re sistor between the pin3 (V CC2) and the pin4 When the resistance is large, the central frequency of the built-in BPF is lowered. V CC2 (power output pin) As the power is output to pin3 th rough the internal power filter resistance, connect An electrolytic capacitor to pin3 OUT (output pin) Open collector output width pull-up resistance. Its capability to drive a CMOS or TTL ma kes for easy connection with a receiving microcomputer. The SL2055 has an active low output VCC1 (power supply pin) Supply voltage of 5V±10% is applied to this terminal SL2055

I/O Pin Waveform Operation Input (Pin8) Converts the Signal Current of Photodiode Voltage and amplifies it. BPF Output (Pin6) Suppresses the Noise Component with BPF Output (Pin2) Integrates the Signal Component and make it as Rectangular Wave Output from Comparator. SL2055 0.2V Standard 40uV p-p to

2.5 V p-p

38 KHz

3.5 4 4.5 5 5.5 6 6.5 Supply Current VS. Supply Voltage 40 80 100 120 140 160 180 20060 Frequency V S. Resistance(R4) R4 = Resistance-KΩ fc - Frequency - KHz Vcc = 5 V 30 35 40 45 50 V oltage Gain V S. Input Frequency Iin - input Frequency - KHz Av - Voltage Gain - dB Vcc = 5 V R2 = 130KΩ V i = 30uV p-p 100

These AUK products are intended for usage in general electronic equipments(Office and communication equipment, measuring equipment, domestic electrification, etc.). Please make sure that you consult with us before you use these AUK products in equipm- ents which require high quality and/or reliabi lity, and in equipments which could have major impact to the welfare of human life(atomic energy control, airplane, spaceship, traffic signal, combustion central, all types of safety device, etc.). AUK cannot accept liability to any damage which may occur in case these AUK products were used in the mentioned equipments without prior consultation with AUK.