PREAMPLIFIER FOR REMOTE CONTROL USE
Description
Semiconductor
SL2055
PREAMPLIFIER FOR REMOTE CONTROL USE
Description
• The SL 2055 is bipolar IC for receiving preamplifier of infrared remote control system.
It consists of a head amplifier, a limiter, a band pass filter, a signal waveform detector, and a waveform rectifier, etc.
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.
SL2055 Marking SL2055 Package Code SOP-8
Outline Dimensions
unit : mm
KSI-W025-001
1
SL2055
Maximum Ratings (Ta = 25°C)
Characteristics
Supply Voltage Input Voltage Operating Temperature Storage Temperature Allowable Power Dissipation
Symbol
Vcc VIN Tope Tstg Pd
Rating
17 5 -20 ~ 75 -55 ~ 150 270
Unit
V Vp-p °C °C mW
Block Diagram
4 fo V CC2 3 RS 1 V CC1
RL IN+ 8 HEA D A MP LI MI T ER BP F + TRAP DET ECT O R W A V EF O R M S HA P ER O UT 2
A BLC
I N7 5
G ND 6
Cd
PIN Description
Pin.
No
1 2 3 4 5 6 7 8
Symbol Pin Voltage
Vcc1 Out Vcc2 fo GND Cd ININ+ 1.
4 1.
5 2.
5 2.
5 5.
0 5.
0 The Power Supply Voltage
Description
Active Low Output Terminal and an Open Collector Output The Power Output Voltage Setting the Center Frequency of the Built-in BPF Ground The Detection Capacitor for the most Output Pulse Width Variation and Noise Reduction Setting the Frequency Characteristics and Gain of the Head Amplifier The input Signal Internal Impedance : 75KΩ (typ.
)
KSI-W025-001
2
SL2055
Electrical Characteristics(VCC=5V, Ta=25 °C)
Item
Input Pin Vol1 Input Pin Vol2 Output Voltage (Low Level)
Symbol
Vin1 Vin2
Test Condition Input Signal
ON-SW
1 Iin=300µA 1,4,6
Test Pin
8 8
Rating Min.
2.
0 0.
6
Unit Remark Max.
3.
1 1.
7 V V
Typ.
2.
5 0.
9
VOL
VP6=1V
3,5
2...
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