Cautions Keep safety first your circuit designs! Renesas Technolo

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Cautions Keep safety first your circuit designs! Renesas Technolo

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Cautions
Keep safety first your circuit designs! Renesas Technology Corporation puts maximum effort into making semiconductor products better more reliable, there always possibility that trouble occur with them. Trouble with semiconductors lead personal injury, fire property damage. Remember give consideration safety when making your circuit designs, with appropriate measures such placement substitutive, auxiliary circuits, (ii) nonflammable material (iii) prevention against malfunction mishap. Notes regarding these materials These materials intended reference assist customers selection Renesas Technology Corporation product best suited customer's application; they convey license under intellectual property rights, other rights, belonging Renesas Technology Corporation third party. Renesas Technology Corporation assumes responsibility damage, infringement third-party's rights, originating product data, diagrams, charts, programs, algorithms, circuit application examples contained these materials. information contained these materials, including product data, diagrams, charts, programs algorithms represents information products time publication these materials, subject change Renesas Technology Corporation without notice product improvements other reasons. therefore recommended that customers contact Renesas Technology Corporation authorized Renesas Technology Corporation product distributor latest product information before purchasing product listed herein. information described here contain technical inaccuracies typographical errors. Renesas Technology Corporation assumes responsibility damage, liability, other loss rising from these inaccuracies errors. Please also attention information published Renesas Technology Corporation various means, including Renesas Technology Corporation Semiconductor home page (http://www.renesas.com). When using information contained these materials, including product data, diagrams, charts, programs, algorithms, please sure evaluate information total system before making final decision applicability information products. Renesas Technology Corporation assumes responsibility damage, liability other loss resulting from information contained herein. Renesas Technology Corporation semiconductors designed manufactured device system that used under circumstances which human life potentially stake. Please contact Renesas Technology Corporation authorized Renesas Technology Corporation product distributor when considering product contained herein specific purposes, such apparatus systems transportation, vehicular, medical, aerospace, nuclear, undersea repeater use. prior written approval Renesas Technology Corporation necessary reprint reproduce whole part these materials. these products technologies subject Japanese export control restrictions, they must exported under license from Japanese government cannot imported into country other than approved destination. diversion reexport contrary export control laws regulations Japan and/or country destination prohibited. Please contact Renesas Technology Corporation further details these materials products contained therein.
HA12181FP
Radio Noise Reduction System
ADE-207-171A 2nd. Edition June 1997 Functions
Buffer amp. audio Linear approximate circuit noise reduction Amp., detector, audio amp. circuit noise detection Gate pulse generator
Features
High noise cancelling capacity: typ. Less gain loss: -0.5 typ. total harmonic destortion high signal-to noise ratio: 0.06% typ., typ. Operation supply voltage range: (8.2 typ.) Less external parts count
HA12181FP
Block Diagram
R500
C502 0.01µ 3.3µ Det.
C503 C504 0.22µ R502 R505
Rev.2, Jun. 1997, page
HPF1 Pulse Det.(2)
Input Amp. Det. Pulse Det.
Gate pulse Gate pulse
Pulse Det.(1)
Gate pulse Gen.
Amp. Noise
Stabi. Volt.
C501 1000
(8.2
R506
Input
Phase Circuit
Det.
C513
Stabilized Voltage Circuit Level Diff. Det. Circuit Stabilized Current Circuit (waveform compensation)
Hight-pass Amp. (waveform compensation)
Buffer Amp.
C506 100µ
AM-IC
C500 0.033µ
Capacitor Pahse C512 0.068µ
Capacitor Hold C511 0.033µ
Output Capacitor C509 By-pass R503 0.033µ C508 C510 R504 0.033µ Capacitor waveform compensation
Gate Time Constant C507 2200
Unit
HA12181FP
Table Description External Parts
External parts voltage Function input) Equivalent circuit Influence External parts Smaller than recommended value Longer distortion recover.
Name
R500 C502
Larger than recom- recommended mended value value Longer time stabilize AGC.
Time constant AGC.
R500 100k
C502 3.3µ
Bias1
Bypass voltage Stabi. Input
C500 0.033µ
C500
0.033
Increased noise.
input
C513
C513
Bias2
Decide current filter network.
R506
frequency shifted lower.
frequency shifted higher.
Phase Phase circuit
C512
0.068
Must used recommended value.
C512 0.068µ
Rev.2, Jun. 1997, page
HA12181FP
Table Description External Parts (cont)
External parts voltage Function input) Equivalent circuit Hold level difference. Influence External parts Smaller than recommended value
Name Hold
C511
Larger than recom- recommended mended value value 0.033
Must used recommended value.
C511 0.033µ
HighPass.
High3.3 Pass AMP. (Waveform Compensation)
C510
0.033
Must used recommended value.
C510 0.033µ
Output
C508 R504
Output Output load
C508
R504 4.7k
Wave form
Wave3.3 form Compensation
C509 0.033µ
C509
0.033
Must used recommended value.
Rev.2, Jun. 1997, page
HA12181FP
Table Description External Parts (cont)
External parts voltage Function input) Equivalent circuit Gate pulse generation
4.5V
Influence External parts Smaller than recommended value Gate pulse width become narrow.
Name Gate
R503 C507
Larger than recom- recommended mended value value 2200 Gate pulse width become wider.
C507 2200p R503 180k
Determi- nation noise detection sensitivit
R502
R502
Higher noise detection sensitivity.
Lower noise detection sensitivity.
C503
0.01
Det. detector
C503 0.01µ
Time constant
R505 C504
0.22
Longer time stabilize AGC.
Missoperaton noise detector.
C504 0.22µ R505
Rev.2, Jun. 1997, page
HA12181FP
Table Description External Parts (cont)
External parts voltage Function input) Equivalent circuit input
Influence External parts Smaller than recommended value Coupling Instability
Name
Larger than recom- recommended mended value value Input
C501 1000p
Absolute Maximum Ratings 25°C)
Item Supply voltage Power dissipation Operating temperature Storage temperature Note: Value 85°C Symbol Topr Tstg Rating 400*
Unit
+125
Rev.2, Jun. 1997, page
HA12181FP
Electrical Characteristics (Tentative) (VCC 25°C, input: mVrms, KHz, input: dBµ, KHz, KHz, 30%)
Item Supply current Output voltage Total harmonic distortion Signal-to-noise ratio Strong input total harmonic distortion Recovered output voltage Recovered output signal-tonoise-ratio Noise suppression ratio Symbol Vout THD1 THD2 (AF) 11.0 0.06 Unit Test conditions input signal, only
mVrms input only input mVrms (Reference), input mVrms
mVrms input only Input waveform below. input mVrms (Reference) input sine wave
100mV Input
10µs
Figure Input Waveform Measurement Noise Suppression Ratio
Rev.2, Jun. 1997, page
HA12181FP
Test Circuit
Det.Out
IF-IN PULSE-IN
AM-SG
AF-IN
AF-SG
Unit
Note: Resistors tolerance within ±5%. Capacitors tolerance (C509 C512) within ±5%, other capacitor within ±10%.
Operation Principle
ANT.
Noise Detector
CONV.
Processing Waveform Circuit
AM-IC
HA12181FP
Figure System Block Diagram Radio
Rev.2, Jun. 1997, page
HA12181FP
system block diagram Radio using HA12181FP shown Figure waveforms each point system illustrated Figure wave with impulse noise from ANT, pulse spreads width each time when wave passes through selection filter. pulse width becomes order several hundred microseconds detector output (Point radio without noise canceller produces large noise audience. This perfectly detects every noise using signals from (Point front narrow band filter. wave process circuit approximates voltage linearly pulse reduce noise output. principle wave processing follows. Further investigation make clear that pulse width impulse noise constant (several handred microseconds) independent waveform waveheight. Therefore former later voltage (VA, pulse found same time (T1) means wave delayed this time, shown right figure.
Each Point Figure
Waveform including Noise
Narrower Pulse Width Higher Wave Height
Point Point
Wider Pulse Width Lower Wave Height
Noiseless
Figure Waveforms Each Point System actual circuit, differential voltage between input output phase shift circuit changed capacitor C511 time when switch turns noise processing mode (the switch positions Figure inverted), voltage difference held C511. C509 changed differential voltage between held voltage output voltage (VA):
Rev.2, Jun. 1997, page
HA12181FP
initial voltage C509 equal output voltage (VA) before switch change, voltage between terminals C509 changed from waveform which change C509 becomes output, because voltage C509 appears through buffer. changed waveform C509 almost linearly approximated because constant current change feedback from output time when awitches change normal mode (the switch position Figure output recovers smoothly voltage C509 However unmatch wave delay time pulse width phase circuit offset circuit make slight step difference waverform moment switch change. LPF, consisting C509 make smooth. frequency characteristics, which detriorated normalmode, compensated that might become flat. C509 C510 should have same capacity, tolerance must within ±5%.
Phase Circuit
HPFAmp.
Buffer
Subtraction Circuit
Constant Current Circuit(Subtraction
Circuit)
C512
C511
C510
C509
Figure Waveform Processing Circuit
Rev.2, Jun. 1997, page
R500
C502 0.01µ 3.3µ Det.
C503 C504 0.22µ R502 R505
HPF1 Pulse Det.(2)
Input
Pulse Det.(1)
Gate pulse Gen.
Amp. Det. Pulse Det. Noise Stabi. Volt.
Amp.
R506
C501 1000
(8.2
signals dummy ANT.
Gate pulse Gate pulse
Phase Circuit
Input
Evaluation Circuit Noise Reduction Effect
Pulse
C513
Stabilized Voltage Circuit Level Diff. Det. Circuit Stabilized Current Circuit (waveform compensation)
Det.
Hight-pass Amp. (waveform compensation)
Buffer Amp.
C506 100µ
AM-IC
C500 0.033µ
Capacitor Pahse C512 0.068µ
Capacitor Hold C511 0.033µ
Gate Time Output Capacitor C509 Constant By-pass R503 0.033µ C507 C508 C510 2200 0.033µ Capacitor R504 waveform Noise compensation Meter
Unit
HA12181FP
Rev.2, Jun. 1997, page
HA12181FP
Example Noise Reduction Effect
Signals dummy ANT.
VCC=8.2V fc=999kHz, m=30%, fm=1kHz Pulse input Vout
Output (dB)
NRoff
Pulse
Pulse Output (EMF) 10µs 100mVP-P
Pulse input
NRon Noise
Figure.2
fc=999kHz, mod. Pulse Refer Figure.2
Output (EMF) (dBµ)
Signals dummy ANT.
VCC=8.2V fc=999kHz, m=30%, fm=1kHz Pulse input Vout
Output (dB)
Pulse
Pulse Output (EMF) 10µs
NRon
NRoff
100mVP-P 10µs
Figure.3
Noise
fc=999kHz, mod. Pulse Refer Figure.2
Output (EMF) (dBµ)
Rev.2, Jun. 1997, page
HA12181FP
Board Layout Pattern
C507
C506
R503 R502 R504 C508
C504 R501 C503 C501
C509 C510 C511
Vout
C513 R506 C502 R500 C505
C512
HA12181FP (Top view)
FN-8648
HA12181FP (Bottom view)
Rev.2, Jun. 1997, page
HA12181FP
Main Characteristics
(Vrms) Vout (dB)
Vout mVrms const Vout mVrms)
(THD 1.0%)
(Hz)
mVrms
(Hz)
Rev.2, Jun. 1997, page
HA12181FP
(AF) mVrms
Vout (dB)
kHz, 30%, 1kHz Noise modulation) (EMF) (dBµ)
Pulse input Gate 10µs pulse
pulse (mVp-p)
R502
Rev.2, Jun. 1997, page
HA12181FP
Vout (mVrms)
Vout
THD1
THD1
THD2
mVrms
S/N1 (dB)
S/N1 no-input
THD2 (Vin mVrms, kHz)
Rev.2, Jun. 1997, page
HA12181FP
(AF) (mVrms)
S/N2
S/N2 (dB)
(AF)
(dB)
(mA)
(pulse input)
(no-input)
Rev.2, Jun. 1997, page
HA12181FP
pulse (mVp-p)
pulse (Pulse input level Gate
Vout
Vout (AF) (mVrms)
mVrms, THD1
THD1
(°C)
Rev.2, Jun. 1997, page
HA12181FP
(dB) (mA)
(pulse input)
(no-input)
(°C)
Rev.2, Jun. 1997, page
HA12181FP
Package Dimensions
Unit:
10.06 10.5
0.22 0.05 0.20 0.04
0.80
0.20 7.80 0.30
2.20
1.15
1.27
0.10 0.10
0.70 0.20
0.42 0.08 0.40 0.06
0.15
0.12
Hitachi Code JEDEC Code EIAJ Code Weight FP-16DA SC-530-16C 0.24
Rev.2, Jun. 1997, page
HA12181FP
Disclaimer
Hitachi neither warrants grants licenses rights Hitachi's third party's patent, copyright, trademark, other intellectual property rights information contained this document. Hitachi bears responsibility problems that arise with third party's rights, including intellectual property rights, connection with information contained this document. Products product specifications subject change without notice. Confirm that have received latest product standards specifications before final design, purchase use. Hitachi makes every attempt ensure that products high quality reliability. However, contact Hitachi's sales office before using product application that demands especially high quality reliability where failure malfunction directly threaten human life cause risk bodily injury, such aerospace, aeronautics, nuclear power, combustion control, transportation, traffic, safety equipment medical equipment life support. Design your application that product used within ranges guaranteed Hitachi particularly maximum rating, operating supply voltage range, heat radiation characteristics, installation conditions other characteristics. Hitachi bears responsibility failure damage when used beyond guaranteed ranges. Even within guaranteed ranges, consider normally foreseeable failure rates failure modes semiconductor devices employ systemic measures such failsafes, that equipment incorporating Hitachi product does cause bodily injury, fire other consequential damage operation Hitachi product. This product designed radiation resistant. permitted reproduce duplicate, form, whole part this document without written approval from Hitachi. Contact Hitachi's sales office questions regarding this document Hitachi semiconductor products.
Sales Offices
Hitachi, Ltd.
Semiconductor Integrated Circuits. Nippon Bldg., 2-6-2, Ohte-machi, Chiyoda-ku, Tokyo 100-0004, Japan Tel: Tokyo (03) 3270-2111 Fax: (03) 3270-5109
NorthAmerica Europe Asia http://sicapac.hitachi-asia.com Japan further information write
Hitachi Semiconductor (America) Inc. East Tasman Drive, Jose,CA 95134 Tel: (408) 433-1990 Fax: <1>(408) 433-0223 Hitachi Europe GmbH Electronic Components Group Dornacher D-85622 Feldkirchen, Munich Germany Tel: <49> (89) 9180-0 Fax: <49> (89) Hitachi Europe Ltd. Electronic Components Group. Whitebrook Park Lower Cookham Road Maidenhead Berkshire 8YA, United Kingdom Tel: <44> (1628) 585000 Fax: <44> (1628) 585160 Hitachi Asia Ltd. Hitachi Tower Collyer Quay #20-00, Singapore 049318 <65>-538-6533/538-8577 <65>-538-6933/538-3877 http://www.hitachi.com.sg Hitachi Asia Ltd. (Taipei Branch Office) 4/F, 167, North Road, Hung-Kuo Building, Taipei (105), Taiwan <886>-(2)-2718-3666 <886>-(2)-2718-8180 Telex 23222 HAS-TP http://www.hitachi.com.tw Hitachi Asia (Hong Kong) Ltd. Group (Electronic Components) 7/F., North Tower, World Finance Centre, Harbour City, Canton Road Tsim Tsui, Kowloon, Hong Kong <852>-(2)-735-9218 <852>-(2)-730-0281 http://www.hitachi.com.hk
Copyright Hitachi, Ltd., 2000. rights reserved. Printed Japan. Colophon
Rev.2, Jun. 1997, page

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