HL3280
1
PREAMPLIFIER FOR REMOTE CONTROL USE
The HL3280 is a miniaturized receiver IC for use in the infrared remote control system.
It has a wide voltage operating such as 2.7~5.5V, a high sensitivity, and good noise
immunity. Wide operating is very suitable to the hand-held battery operating systems,
such as electrical toy.
This can also be suitable for high optical and electrical disturbances.
It has the frequency selecting Pads for setting the center frequency of band-pass filter
and also has 5 trimming Pads for the fine adjustment of center frequency.
The HL3280 is capable of accepting a photodiode directly and include many excellent
circuit such as an internal voltage reference for wide voltage operating, 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.
• Wide operating supply voltage 2.7V ~ 5.5 V
• Built-in internal voltage reference circuit for wide operating
• 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
• Open collector output (Open collector output with a pull-up resistor)
• Output active low
Version 2
Published by MagnaChip Semiconductor, Ltd. Oct. 25 2004. All right reserved.
Additional information of this datasheet may be served by MagnaChip Semiconductor offices in Korea or Distributors and Representatives
listed at address directory.
MagnaChip Semiconductor reserves the right to make changes to any information here in at any time without notice.
The information, diagrams and other data in this datasheet are correct and reliable; however, MagnaChip Semiconductor is in no
way responsible for any violations of patents or other rights of the third party generated by the use of this manual.
1. OVERVIEW
1.1 Description
1.2 Features
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