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| ICs for Cassette, Cassette Deck AN7367K dbx II Noise Reduction IC for Cassette Deck s Overview The AN7367K is an integrated circuit available for stereo operation on a single chip developed for dbx II type noise reduction, which can also use for U.S. sound multiplex TV. And it is designed for easy use of reference signal level, supply voltage and logic input level. 1 2 3 4 5 6 7 8 9 10 11 12 13 14 8.40.3 4.80.25 28 27 26 25 24 23 22 21 20 19 18 17 16 15 0.50.1 0.3 + 0.1 5 - 0.0 Unit : mm 0.90.25 s Features * Dynamic range : 110dB * 2-channel * Reference input-output signal level : 90mV * 2 power supply type (+, -) 26.70.3 1.050.25 3.050.25 3 ~ 15 10.160.25 28-Lead SDIP Package (SDIP028-P-0400A) s Block Diagram +VCC 28 27 26 25 24 23 22 21 20 19 18 17 16 15 -D+ +C- +E- EOD E OD E ODEOD +A- - - F+ B+ L.S BDE 1 GND 2 3 4 5 6 7 8 9 10 11 12 13 14 -VCC 1.778 AN7367K s Absolute Maximum Ratings (Ta=25C) Parameter Supply Voltage Supply Current Power Dissipation (Ta=75C) Operating Ambient Temperature Storage Temperature Symbol VCC ICC PD Topr Tstg ICs for Cassette, Cassette Deck Rating 7.2 30 450 -20 ~ + 75 -55 ~ + 150 Unit V mA mW C C s Recommended Operating Range (Ta=25C) Parameter Operating Supply Voltage Range Symbol VCC Range 5V ~ 7V s Electrical Characteristics (VCC= 6V, Ta=25C ) Parameter Encode Output Voltage Encode Linearity -1 *1 Encode Linearity -2 *1 Decode Output Voltage Decode Linearity -1 *2 Decode Linearity -2 *2 Encode Max. Output Voltage Decode Max. Output Voltage Encode Total Harmonic Distortion Decode Total Harmonic Distortion Encode Noise Output Voltage Decode Noise Output Voltage Encode Output Defference between Channels Decode Output Difference between Channels Encode Crosstalk between Channels Decode Crosstalk between Channels Monitor Output Voltage Monitor Output Voltage Output Difference Between Channels Monitor Output Noise Output Voltage Monitor Output Total Harmonic Distortion dbx OFF Line Output Voltage dbx OFF Rec. Output Voltage dbx OFF line Output Total Harmonic Distortion dbx OFF Rec Output Total Harmonic Distortion dbx OFF Line Output Noise Output Voltage dbx OFF Rec. Output Noise Output Voltage dbx OFF Line Output Output Difference between Channels dbx OFF Rec. Output Output Difference between Channels Input Impedance Total Circuit Current AN7367K Symbol VOE LE - 1 LE - 2 VOD LD - 1 LD - 2 VOME VOMD THDE THDD VNOE VNOD CDE CDD CTE CTD VOM CDM VNOM THDM VLOFF VROFF THDLOFF THDROFF VNLOFF VNROFF CDLOFF CDROFF ZIN Itot H4Condition min. 67.5 8 - 22 67.5 17 - 43 300 1100 typ. 85 10 - 20 85 20 - 40 max. 107 12 - 18 107 23 - 37 Unit mV dB dB mV dB dB mV mV Vin = 1kHz, 90mV (Reference Level) Vin = 1kHz, 900mV (Encode) Vin = 1kHz, 0.9mV (Encode) Vin = 1kHz, 90mV (Reference Level) Vin = 1kHz, 285mV (Decode) Vin = 1kHz, 9mV (Decode) THD = 3%, f = 1kHz THD = 3%, f = 1kHz At Encode, 400Hz ~ 30kHz, f = 1kHz, 90mV At Decode, 400Hz ~ 30kHz, f = 1kHz, 90mV Input short, DIN/AUDIO Input short, DIN/AUDIO Vin = 1kHz, 90mV Vin = 1kHz, 90mV At Encode *3, Vin = 1kHz, 900mV At Decode, Vin = 1kHz, 90mV At Encode, Vin = 1kHz, 90mV At Encode, Vin = 1kHz, 90mV Encode input, Short DIN/AUDIO At Encode, Vin = 1kHz, 90mV Vin = 1kHz, 180mV Vin = 1kHz, 180mV Vin = 1kHz, 180mV Vin = 1kHz, 180mV Input Short, DIN/AUDIO Input Short, DIN/AUDIO Vin = 1kHz, 180mV Vin = 1kHz, 180mV Vin = 1kHz, 90mV Input Short at Encode 0.35 0.1 - 62 - 96 - 1.3 -2 0 0 - 52 - 91 75 - 1.5 90 0 - 110 0.01 151 151 180 180 0.01 0.01 - 110 - 110 - 1.5 - 1.5 500 12 0 0 0.45 0.3 - 58 - 92 1.3 2 - 45 - 85 107 1.5 - 106 0.1 214 214 0.1 0.1 - 104 104 1.5 1.5 16 % % dBV dBV dB dB dBV dBV mV dB dBV % mV mV % % dBV dBV dB dB k mA *1 Level Ratio to VOE *2 Level Ratio to VOD *3 Measure output leak by short of measuring channel input and input to reverse channel. ICs for Cassette, Cassette Deck s Electrical Characteristics (Cont.) (VCC= 6V, Ta=25C) Parameter dbx ON/OFF Control dbx ON dbx ON/OFF Control dbxOFF Encode/Decode Control Encode Encode/Decode Control Decode dbx ON/OFF Control "L" Overflow Current Encode/Decode Control "L" Overflow Current Pulse Noise at Encode Symbol V15ON V15OFF V16EN V16DE I15L I16L VNPE Condition min. typ. AN7367K max. 6 1.8 6 1.8 - 0.2 - 0.2 Unit V V V V A A Satisfy specifications of the preceding page VOE ~ VNLOFF 3.2 -VEE Satisfy specifications of the preceding page + 0.4V VOE ~ VNLOFF 3.2 Satisfy specifications of the preceding page VOE ~ VNLOFF -VEE Satisfy specifications of the preceding page + 0.4V VOE ~ VNLOFF V15=1.8V -2.1 V16=1.8V Input Short, Time : a second, number : one -2.1 13 mVP - P s Characteristics Curve 20 Input/Output Characteristics (Playback Mode) Input/Output Characteristics (Rec. Mode) -10 -20 -30 Vout (dBV) -40 -50 -60 f=1kHz -100 - 80 - 60 - 40 - 20 0 0 THD Vout f=10kHz 0.8 0.4 VCC = 6V LPF = 30kHz HPF = 400Hz Din Audio - 62dBV VCC = 6V LPF = 30kHz HPF = 400Hz 0 Din Audio - 98dBV f = 10kHz -20 Vout (dBV) f=1kHz f=10kHz 1.6 1.2 THD (%) Vout - 40 f = 1kHz - 60 2 THD (%) 100k -80 f = 1kHz THD -100 - 60 - 40 -20 0 Vin (dBV) 1 Vin (dBV) 0 Output Frequency Characteristics (Rec. Mode) 8 6 4 0 Vout (dB) Vout (dB) 2 0 -4 -8 - 12 Output Frequency Characteristics (Playback Mode) Vout = 87.6mV = 0dB f = 1kHz 4 Vin = 90mV Vout = 85.6mV = 0dB f = 1kHz - 2 Vin = 90mV f 1kHz *** LPF (30kHz) HPF (400Hz) -4 f <1kHz *** HPF (400Hz) 10 100 1k Frequency f (Hz) 10k 100k 10 100 1k Frequency f (Hz) 10k s Pin Description Pin No. 2 * 27 Pin Name Recording Signal Input Typ. Waveform Description Equivalent Circuit 2 0V + - Pin for inputting signal 27 AN7367K s Pin Description (Cont.) Pin No. Pin Name Typ. Waveform Description ICs for Cassette, Cassette Deck Equivalent Circuit + - 3 * 26 Emphasis Emphasis amp. - side input pin 3 26 + - 4 25 4 * 25 Line Amp. Output 0V Line amp. output pin + - 5 * 24 Emphasis Amp. Output + - 0V + - Emphasis amp. output pin 5 24 6 * 23 Buffer Output 0V Buffer output pin + - 6 23 7 * 22 7 CCA Input 0V CCA input pin 22 8 * 21 CCA Output 0V CCA output pin 8 21 9 * 20 + - CCA Amp. Input 0V CCA amp. input pin 9 20 10 * 19 Rec. Out Output 0V Rec. out output pin + - 10 19 ICs for Cassette, Cassette Deck s Pin Description (Cont.) Pin No. Pin Name Typ. Waveform Description AN7367K Equivalent Circuit 11 * 18 Level Sensor Input -5.2V Level sensor input pin 11 18 12 * 17 Timing Capacitor -5.3V Level sensor smoothing pin 12 17 13 Timing Current Adjusting Pin Adjust the timing current by external variable resistance. 1k 13 103A 15 dbx ON/OFF Switching High- dbx ON Low- dbx OFF 15 3.7k 103A 16 16 Encode/ Decode Switching High - Encode Low- Decode 3.7k 1 14 28 GND (-) Power Supply (+) Power Supply AN7367K s Precautions on Use 1) For the emphasis, RMS filter, and waiting C, R, use those resistors and capacitors which satisfy the following error ranges. (R ; 2%, C ; 5%) 2) For the timing capacitor, use a suitable one whose error is within 5% and whose tan is small enough. The selected timing capacitor must also has excellent temperature characteristics. 3) Adjust the timing adjustment pin so that the level on both 1k ends becomes 18.4mV. 4) If shortening of the power ON rise time is necessary, connect the timing capacitor as shown in the sketch below. 5) ICs for Cassette, Cassette Deck Encode THD The product specification is based on the data confirmed by use of a band-pass filter (400Hz ~ 30kHz). The distortion rate in the secondary to quintic higher harmonics measured by a spectrum analyzer is about 0.16%. 6) When users use the AN7367K, contract should be made between the dbx Technology Licensing. dbx license and trademark should be contacted with the following. the U.S.A. : dbx Technology Licensing 433 California Street. Third Floor San Francisco, California 94104 Tel : 415-765-2801 Fax : 415-765-2141 Japan Office : dbx Technology Licensing Tel : 03-3378-0915 Fax : 03-3374-5191 12/17 6V + + 12/17 -6V - 6V Note) Remember to make the power impedance low enough. Request for your special attention and precautions in using the technical information and semiconductors described in this material (1) An export permit needs to be obtained from the competent authorities of the Japanese Government if any of the products or technologies described in this material and controlled under the "Foreign Exchange and Foreign Trade Law" is to be exported or taken out of Japan. (2) The technical information described in this material is limited to showing representative characteristics and applied circuit examples of the products. It does not constitute the warranting of industrial property, the granting of relative rights, or the granting of any license. (3) The products described in this material are intended to be used for standard applications or general electronic equipment (such as office equipment, communications equipment, measuring instruments and household appliances). Consult our sales staff in advance for information on the following applications: * Special applications (such as for airplanes, aerospace, automobiles, traffic control equipment, combustion equipment, life support systems and safety devices) in which exceptional quality and reliability are required, or if the failure or malfunction of the products may directly jeopardize life or harm the human body. * Any applications other than the standard applications intended. (4) The products and product specifications described in this material are subject to change without notice for reasons of modification and/or improvement. At the final stage of your design, purchasing, or use of the products, therefore, ask for the most up-to-date Product Standards in advance to make sure that the latest specifications satisfy your requirements. (5) When designing your equipment, comply with the guaranteed values, in particular those of maximum rating, the range of operating power supply voltage and heat radiation characteristics. Otherwise, we will not be liable for any defect which may arise later in your equipment. Even when the products are used within the guaranteed values, redundant design is recommended, so that such equipment may not violate relevant laws or regulations because of the function of our products. (6) When using products for which dry packing is required, observe the conditions (including shelf life and after-unpacking standby time) agreed upon when specification sheets are individually exchanged. (7) No part of this material may be reprinted or reproduced by any means without written permission from our company. Please read the following notes before using the datasheets A. These materials are intended as a reference to assist customers with the selection of Panasonic semiconductor products best suited to their applications. Due to modification or other reasons, any information contained in this material, such as available product types, technical data, and so on, is subject to change without notice. Customers are advised to contact our semiconductor sales office and obtain the latest information before starting precise technical research and/or purchasing activities. B. Panasonic is endeavoring to continually improve the quality and reliability of these materials but there is always the possibility that further rectifications will be required in the future. Therefore, Panasonic will not assume any liability for any damages arising from any errors etc. that may appear in this material. C. These materials are solely intended for a customer's individual use. Therefore, without the prior written approval of Panasonic, any other use such as reproducing, selling, or distributing this material to a third party, via the Internet or in any other way, is prohibited. 2001 MAR |
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