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PDF SL2055 Data sheet ( Hoja de datos )
| Número de pieza | SL2055 | |
| Descripción | PREAMPLIFIER FOR REMOTE CONTROL USE | |
| Fabricantes | AUK corp | |
| Logotipo |  |
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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
1 page  
Terminal Functions
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 decreasing 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 resistor between the pin3 (VCC2) and the pin4
When the resistance is large, the central frequency of the built-in BPF is lowered.
VCC2
(power output pin)
As the power is output to pin3 through 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 makes 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
KSI-W025-001
5
5 Page | ||
| Páginas | Total 8 Páginas | |
| PDF Descargar | [ Datasheet SL2055.PDF ] | |
Hoja de datos destacado
| Número de pieza | Descripción | Fabricantes |
| SL2055 | PREAMPLIFIER FOR REMOTE CONTROL USE | AUK corp |
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