AN7367K

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 8.4±0.3 4.8±0.25 28 27 26 25 24 23 22 21 20 19 18 17 16 15 0.5±0.1 0.3 + 0.1 5 – 0.0 Unit : mm 0.9±0.25 s Features • Dynamic range : 110dB • 2-channel • Reference input-output signal level : 90mV • 2 power supply type (+, –) 26.7±0.3 1.05±0.25 3.05±0.25 3 ~ 15˚ 10.16±0.25 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=25˚C) Parameter Supply Voltage Supply Current Power Dissipation (Ta=75˚C) 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=25˚C) Parameter Operating Supply Voltage Range Symbol VCC Range ± 5V ~ ±7V s Electrical Characteristics (VCC= ± 6V, Ta=25˚C ) 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 kΩ 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=25˚C) 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 µA µA 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