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| ICs for Cassette, Cassette Deck AN7353S Record Equalizer Amp. for Stereo Cassette Deck s Overview The AN7353S is a bipolar IC developed as a record equalizer amp. of analogue cassette deck. Particularly in order to support the automatic adjustment, it incorporates various volume filter circuits and control functions. Also, it has realized great reduction of external parts required. 0.45 1 2 3 4 5 6 7 8 9 10 11 12 24 23 22 21 20 19 18 17 16 15 14 13 2.00.2 Unit : mm 0.40.25 s Features * Fine adjustment of equalizer characteristics (frequency * * * characteristics and gain) in medium and high frequency band by DC control Volume for total gain adjustment built-in (11dB) With pin for low frequency band boost Drive circuit for current output built-in 0.10.1 1.27 0.3 7.20.3 9.40.3 24-Lead SOP Package (SOP024-P-0375) s Block Diagram GND 24 REC. IN (L) 23 CM 22 CH 21 Boost (L) 20 CF 19 EQ OUT (L) 18 VR IN (L) 17 Vout (L) 16 0.15 0.925 Iout (L) 15 VCC 14 CL 13 Rec. L.P.F fm V- I GH V- I Amp. GT V- I V- I Conv. Amp. Q V- I fp V- I Gp V- I Input Sw. Q fp fm Gp GH GT (L) GT (R) Output Sw. VREF Ireg - Q V- I fp V- I Gp V- I Amp. Rec. L.P.F fm V- I GH V- I GT V- I Amp. V- I Conv.- 1 -VCC 2 REC. IN (R) 3 IN MUTE 4 CQ 5 Boost (R) 6 CP 7 EQ OUT (R) 8 VR IN (R) 9 Vout (R) 10 11 12 CR Iout (R) NC 15.30.3 AN7353S s Absolute Maximum Ratings (Ta=25C) Parameter Supply Voltage Supply Current Power Dissipation Operating Ambient Temperature Storage Temperature Symbol VCC ICC (+) ICC (-) PD Topr Tstg ICs for Cassette, Cassette Deck Rating 6.7 26 23 521 -25 ~ + 75 -55 ~ + 125 Unit V mA mA mW C C s Recommended Operating Range (Ta= 25C) Parameter Operating Supply Voltage Range Symbol VCC Range 4.5V ~ 6.5V s Electrical Characteristics (VCC= 6V, Ta=252C) Parameter Reference Output (EQ Output) Medium/High Frequency Band Gain High Frequency Band Peak Gain HIGH LOW HIGH LOW Symbol VEQ GHH GHL GPH GPL GQW GQL VfPH VfPL GTH GTL THD (RU) THD (RC) VO (RU) VO (RC) VN(RC) IM (EQ) OM (RU) Voff (EQ) Voff (RC) VPN (RC) VIM VOM Itot Condition fin = 400Hz, Vin = -6dBv fin = 10kHz, Vin = -12dBv, VEQ = 0dB Vin = -30dBv Vin = -18dBv fin = 25kHz VEQ = 0dB min. -4 3.5 -8.5 16 7 2 -2.5 3.85 1 fin = 1kHz (VR Input) 16.5 -5.5 typ. -1.5 5.5 -6.5 18 9 4.5 0 4.25 1.2 18.5 -3.5 0.3 fin = 1kHz 0.3 THD = 3% 2.2 1 3.2 1.5 0.6 40 60 -900 -25 -9 3.9 GND 20 23 +500 +25 +9 VCC V 0.3 26 mA 0.8 Vrms 2 mV * rms dB dB mV A mVP-O max. +1 7.5 - 4.5 20 11 7 +2.5 4.65 1.4 20.5 -1.5 0.8 % dB V dB dB Unit dBv dB High Frequency Band Peak WIDE Band Width (10kHz Output) NALLOW High Frequency Band Peak Frequency Control Voltage Volume Amp. Gain (VOL Output) HIGH LOW HIGH LOW VOL Total Harmonics Distortion CULL Maximum Output Voltage Output Noise Voltage (CURR Output) Input Muting Attenuation (EQ Output) Output Muting Attenuation (VOL Output) Output Offset Voltage (EQ Output) Output Offset Current (CURR Output) Pulse Noise Current (CURR Output) Input Side Muting Control Voltage Output Side Consumption Current VOL CULL fin = 10kHz, Vin = -18dBv, VEQ = 0dB fin = 35kHz fin = 10kHz Vin = -18dBv Vin = 0dBv Vin = -14dBv RLV = 10k Vin = -14dBv RLV = 1k RLV = 10k Vin = -30dBv RLV = 1k Rg = 0 RLV = 1k, DIN/AUDIO fin = 1kHz, 3p : OPEN Vin = - 6dBv fin = 1kHz, VCL = 0.3V Vin (VR) = 0dBv Rg = 0 RLV = 1k RLV = 100k Rg = 0 Pin3 threshold value voltage (Mute ON voltage) Pin13 threshold value voltage (Mute ON voltage) No signal ICs for Cassette, Cassette Deck s Pin Description Pin No. 1 2 3 4 5 6 7 8 9 10 11 12 Main Circuit -VCC Record Amp. Input (R ch.) Record Amp. Input Mute Control High Frequency Band Peak Band Width Control Low Frequency Band Boost (R ch.) High Frequency Band Peak Gain Control Equalizer Amp. Output (R ch.) Volume Amp. Input (R ch.) Record Amp. Voltage Output (R ch.) Record Amp. Current Output (R ch.) NC Volume Amp. Gain Control (R ch.) Pin Name Pin No. 13 14 15 16 17 18 19 20 21 22 23 24 Main Circuit +VCC Record Amp. Current Output (L ch.) Record Amp. Voltage Output (L ch.) Volume Amp. Input (L ch.) Equalizer Amp. Output (L ch.) High Frequency Band Peak Frequency Control Low Frequency Band Boost (L ch.) Medium/High Frequency Band Gain Control Medium Frequency Band Cutoff Frequency Control Record Amp. Input (L ch.) GND Pin Name Volume Amp. Gain (L ch.)/Output Mute Control AN7353S s Application Circuit 0.47F 33k 10F 33k 10F 10F + 1k 100k 15 lout (L) V- l Conv. + 10F 6V 14 +VCC 13 CL GND 24 + 23 REC. IN (L) 22 CM Rec. 21 CH 20 Boost (L) fm V- l 19 CF GH V- l EQ OUT (L) 18 17 VR IN (L) GT V- l 10k 16 Vout (L) L.P.F Amp. Amp. Q V- l Input Sw. fp V-l GP V- l GT (L) GT (R) Output Sw. Vref Ireg- Q fp fm Gp GH Q V- l fp V- l Gp V- l Amp. Rec. REC. IN (R) 1 -VCC 6V 10F + 2 IN MUTE 3 CQ 4 L.P.F fm V- l CP 6 GH V- l EQ OUT (R) GT V- l VR IN (R) Amp. V- l Conv. Vout (R) 9 10F 10k + lout (R) 10 100k + 1k NC 11 10F CR 12 Boost (R) 5 0.47F 7 8 10F |
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