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TDA7334D Scheda tecnica(PDF) 1 Page - STMicroelectronics |
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TDA7334D Scheda tecnica(HTML) 1 Page - STMicroelectronics |
1 / 11 page TDA7334 LOW NOISE STEREO PREAMPLIFIER DUAL CHANNEL PROCESSOR FOR PLAY- BACK APPLICATIONS. LOW NOISE HEAD PREAMPLIFIER GROUND COMPATIBLE MUTE, AUTOREVERSE METAL/NORMAL FUNCTIONS INTERNAL SWITCHES FOR EQUALIZATION LOW SUPPLY CURRENT MIXED BIPOLAR/CMOS TECHNOLOGY DESCRIPTION The TDA7334 is a monolithic BICmos IC de- signed for use in stereo cassette player systems. The dual preamplifier contains mute, autoreverse, metal/normal facilities for amplification of low level signal in applications requiring very low noise per- formance. Each channel consists of two cascaded opera- tional amplifiers. The first one, AMP1, has a fixed gain of 32dB, low noise forward/reverse switchable input, and allows magnetic heads connection directly to ground. The second one, AMP2, is a standard op- erational amplifier whose equalizing external components fix the frequency response. November 1999 ® R12 300K R13 6.8K C4 10nF R11 1.2K C11 1 µF R15 6.2K EQRO EQRI C6 300pF INR2 INPUT R R10 600 Ω C5 300pF R9 600 Ω INR1 12 13 14 15 C3 300pF R1 600 Ω C2 300pF R2 600 Ω INL1 INL2 2 3 R4 6.8K R5 300K C8 10nF R3 1.2K C1 1 µF EQLI EQLO R14 6.2K 4 5 AMP1 AMP1 AMP2 AMP2 32dB 32dB RN RN 9 V S 1 GND OUTR +VS C12 100nF C13 0.22 µF 20K +V S R7 10K F/RSW 11 8 7 MUTE C9 100nF 20K C14 0.22 µF OUTL EQSW 6 16 R8 10K GND +V S D94AU079 INPUT L TEST CIRCUIT ORDERING NUMBER: TDA7334 (DIP16) TDA7334D (SO16) DIP16 SO16 1/11 |
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