HL3280
PREAMPLIFIER FOR REMOTE CONTROL USE
1. OVERVIEW
1.1 Description
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.
1.2 Features
• 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
HL3280
2. ELECTRICAL CHARACTERISTICS
2.1 Absolute Maximum Ratings
Parameter
Supply Voltage
Output Voltage
Output Current
Operating Temperature
Storage Temperature
Symbol
Vcc
Vout
Iout
Topr
Tst
Min.
0
0
0
-25
-40
Max.
6.0
6.0
2.5
85
125
Unit
V
V
mA
℃
℃
Conditions
* 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.
2.2 Recommended Operating Conditions
Parameter
Operating Voltage
Input Frequency
Operating Temperature
Symbol
Vcc
fin
Top
Min.
2.7
30
-20
Typ.
-
38
25
Max.
5.5
60
80
Unit
V
kHz
℃
Conditions
2
HL3280
3. Functional Block Diagram
VCC
Noise det. &
Gain ctrl.
I-V
Convert
&
Input Bias
Control
Voltage
reference
circuit
IN
Pre
amp
AGC
amp
Limit
amp
Band
Pass
Filter
Compa-
rator
Integ-
rator &
Wave
shaping
Output
stage
OUT
Fset bias circuit
fc
Setting
fc
Trimming
Threshold
control
circuit
Freq. selection
option pads
(S1~S4)
Trimming
Pads
(T1~T5)
GND
* fc(center frequency) can be varied with 4 option pins.
: 32.7KHz, 36.7KHz, 37.9KHz, 40.0KHz, 56.7KHz
Fc(Center Frequency)
32.7 kHz
36.7 kHz
37.9 kHz
40.0 kHz
56.7 kHz
PAD Setting Method (S1,S2,S3,S4)
No connection
S1(PAD6) is Ground
S2(PAD5) is Ground
S3(PAD3) is Ground
S4(PAD2) is Ground
4
HL3280
4. Floor Planning Diagram(Fc=37.9KHz)
VCC
1
16
15
14
13
12
11
10
U.R.(1460,1200)
OUT
2
9
GND
3
4
GND
5
HL3280
GND
6
L.L.( 0 , 0 )
Scribe Lane : 50um
• Chip size : 1460 um x 1200um (with scribe lane)
• PAD Open Size : 100 x 100 um (80 x 90 um for trimming and test PAD)
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8
5. PADs Description
PAD Number
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
PAD Name
VCC
S4
S3
MP2
S2
S1
IN
GND
MP1
GND
OUTPUT
T5
T4
T1
T2
T3
VCC Pad
BPF Frequency selection pad
BPF Frequency selection pad
Pad for Test
BPF Frequency selection pad
BPF Frequency selection pad
Signal Input Pad
Ground Pad
Pad for Test
Ground Pad for Output
Signal Output Pad
Trimming Pad
Trimming Pad
Trimming Pad
Trimming Pad
Trimming Pad
Description
PAD (X,Y)
132.5 , 1023
132.5 , 863
132.5 , 703
127.5 , 448
132.5 , 298
132.5 , 138
292.5 , 135
1322.5, 135
1328 , 868.5
1322.5, 1028.5
1012.5, 1045
842.5 , 1051.5
702.5 , 1051.5
562.5 , 1051.5
422.5 , 1051.5
282.5 , 1051.5
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