ADT2450 Datasheet, PDF (1/4 Pages) ADTech – 5V Operating IR Receiver with Excellent Noise Performance for R/C

5V Operating IR Receiver
with Excellent Noise Performance for R/C
ADT2450
General Description
ADT2450 is a miniaturized receiver IC for use in the infrared remote control system.
It has 5V voltage operating, a high sensitivity, and good noise immunity to a power
and external light.
This can also be suitable for high optical and electrical disturbances and
good for an 5V application system.
It has the frequency selecting Pads for setting the center frequency of band-pass filter and
also has 5 trimming Pads for the fined adjust of center frequency.
This IC is capable of accepting a photodiode directly and include many excellent circuit
such as an internal voltage reference for better temperature characteristics, a high gain initial
amplifier, a gain control amplifier, a limiter, a band pass filter, a detection circuit,
two comparator circuits, gain control circuits, integrator circuits, a waveform shaping circuit
assembled on a single chip.
This IC also has a powerful noise suppression to any kinds of external light.
Features
• 5V operating
• Internal voltage reference and current reference circuit for better temperature characteristics
• Maximum interference safety against optical and electrical disturbances
• No external components necessary
• The Center Frequency can be varied with option PADs
( 32.7kHz, 36.7kHz, 37.9kHz, 40kHz, 56.7kHz)
• Internal filter for a high frequency lighting fluorescent lamp with AGC control
(Powerful Noise cancel)
• Open collector output (Open collector output with a pull-up resistor)
• Output active low
Absolute Maximum Ratings
Parameter
Symbol
Min.
Max.
Unit
Supply Voltage
Vcc
0
6.0
V
Output Voltage
Vout
0
6.0
V
Output Current
Iout
0
2.5
mA
Operating Temperature
Topr
-20
80

Storage Temperature
Tst
-40
125

* Stress above those listed under Absolute Maximum Ratings may cause permanent damage of device.
This is stress rating only and functional operation of the device at these or any other conditions above those
indicated in the operational sections of this specification is not implied. Exposure to absolute maximum rating
conditions for longer periods may affect device reliability.
During overload conditions (VIN>Vcc or VIN<GND), those voltage on Vcc pins with respect to ground must
not exceed the values defined by the absolute maximum ratings.
Feb. 05. 2005 / Rev. 0.0
1/4
http://www.ad-tech.co.kr