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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.
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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 E Unit V V mA E 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 VIN2.2 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 E Conditions
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HL3280
2.3 Electrical Specifications
Specifications hold over the recommended operating conditions, unless otherwise noted herein. All values are at 25E and Vcc=3.0V/5.0V.
Parameter Supply Current Max. Input current
Symbol Icc IIN
Min. 0.8 85
Typ. 1.3 1.2 95 95 7 -
Max. 2.5 2.5 1.75 110 110 9 800
Unit mA mA mA dB dB kHz A
Conditions Iin = 0 E , Vcc=3V Iin = 0 E , Vcc=5V Iin = 0 E , Vcc=5V fin=37.9kHz, Vin=30A p-p, Vcc=3V fin=37.9kHz, Vin=30A p-p, Vcc=5V -3dB Bandwidth Vin=30A p-p fin=37.9kHz, burst wave Vin=500 A p-p *Note 1
Max. Voltage gain
Av 85
BPF Bandwidth
fBW tPW1
5 500
Output Pulse Width tPW2 Low Level Output Voltage High Level Output Voltage 500 800 A V V V
fin=37.9kHz, burst wave Vin= 50mVp-p *Note 1 Isink=2.0mA Vcc=3V Vcc=5V
VOL
2.7
3.0 5.0
0.25 -
VOH 4.7
*Note 1.
carrier frequency : 37.9KHz
(Input burst waveform)
600 A 600 A 600 A 600 A
(Output pulse)
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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
Comparator
Integrator & 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
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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) 7 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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HL3280
6. Application Guide 6.1 Example of Module(37.9KHz) Packaging Using HL3280
VCC R1:100U VCC IN
HL3280
fc set pins S1 S2 S3 S4
OUT GND C1:4.7uF
OUT
GND
6.2 Functional Guide of HL3280 * HL3280 is high gain amplifier for high sensitivity. So if you want better characteristics of receivable distance, you have much careful attention in bonding of GND pads and shielding to GND. * For more better distance performance, it is important to suppress the supply noise. The supply filter R1, C1 have to be located close to IC if possible. * The photo diode is important factor in IR receiver module and you select it considerately. * In packaging of IR module, the photo lens is good for receiving of photo signal. But if the chip is included in the lens, the chip also receives the photo signal and the signal acts as a noise in the chip. So when you design the lens or module frame, the above point must be considered. * In the detection or demodulation(wave shape) of incoming signal, HL3280 need the minimum burst length of modulated signals. The incoming photo signal is modulated with proper carrier signal(e.g. 37.9KHz) and if the `1' data bit is modulated with carrier signal, the period of data bit '1' is important. Because the carrier signals is in this period, the integration need minimum period to the reach of appropriately level in the Integrator & Wave Shape block of HL3280. Hence the minimum burst length is important characteristic and specification of remote control systems. The minimum burst length of HL3280 is about 10 cycles of carrier. (~10*Tfc) You can easily understand as see the Figure 1. Figure 1.
carrier frequency : 37.9KHz (Input burst waveform)
burst length (Integrator output)
(Output pulse) minimum burst length
* The minimum burst length of HL3280:~10cycles of carrier (~10*Tfc)
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