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| TDA7334 LOW NOISE STEREO PREAMPLIFIER PRODUCT PREVIEW DUAL CHANNEL PROCESSOR FOR PLAYBACK 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 designed 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 performance. Each channel consists of two cascaded operational amplifiers. The first one, AMP1, has a fixed gain of 32dB, TEST CIRCUIT R15 6.2K C4 10nF DIP16 SO16 ORDERING NUMBER: TDA7334 (DIP16) TDA7334D (SO16) low noise forward/reverse switchable input, and allows magnetic heads connection directly to ground. The second one, AMP2, is a standard operational amplifier whose equalizing external components fix the frequency response. EQRO R12 300K EQRI 12 RN 13 9 VS C12 100nF +VS R11 1.2K C11 1F INPUT R C6 300pF R13 6.8K 1 32dB GND INR2 R10 600 C5 300pF INR1 R9 600 14 15 AMP1 AMP2 11 OUTR C13 0.22F 20K 8 F/RSW R7 10K +VS INPUT L C3 300pF R1 600 C2 300pF INL1 INL2 R2 600 2 3 7 AMP1 AMP2 MUTE C9 100nF 32dB 4 6 RN 5 16 EQSW OUTL C14 0.22F R3 1.2K C1 1F R4 6.8K R5 300K C8 10nF EQLI 20K EQLO GND D94AU079 R8 10K +VS R14 6.2K April 1994 1/11 This is advanced information on a new product now in development or undergoing evaluation. Details are subject to change without notice. TDA7334 ABSOLUTE MAXIMUM RATINGS Symbol VS Ptot Top Tstg Supply Voltage Total Power Dissipation Operating Temperature Range Storage Temperature Range Parameter Value 12 1 -40 to 85 -40 to 150 Unit V W C C PIN CONNECTION (Top view) THERMAL DATA DIP 16 Rth j-pins Thermal resistance junction-pins 100 SO16 200 C/W 2/11 TDA7334 Figure 1: Application Circuit R15 6.2K C7 10nF EQRO R13 6.8K R12 300K EQRI 32dB INR2 INR1 INPUT R 14 15 AMP1 AMP2 11 OUTR R7 30K C10 0.68F 7 INL1 INL2 INPUT L TR1 1K R3 1.2K C1 1F R4 6.8K R5 300K EQLI 5 EQLO 4 RN 16 EQSW R8 30K C4 0.68F D94AU080 12 RN 13 9 VS C12 100nF +VS R11 1.2K TR2 1K C11 1F GND 1 C13 0.22F 8 F/RSW VS GND MUTE R6 30K C9 0.68F 2 3 AMP1 AMP2 32dB 6 OUTL C14 0.22F VS GND C8 10nF R14 6.2K PIN 1 2 0 3 0 4 3.6 5 3.6 6 3.6 7 8 9 8.0 10 N.C. 11 3.6 12 3.6 13 3.6 14 0 15 0 16 DC (V) GND 3/11 TDA7334 ELECTRICAL CHARACTERISTICS (VS = 8V;RIN = 600; f = 1KHz; T amb = 25C; unless otherwise specified (see figure 2) Symbol VS IS SVR MUTEth MUTEA RI Vout DC II GVO GV GV VOM RN SR eN Parameter Supply Voltage Supply Current Ripple Rejection Mute (Pin 7) Mute Attenuation Input Resistance Output Voltage DC Input Bias Current Open Loop Gain Closed Loop Gain Closed Loop Gain Match Signal Handling Resistance Normal Position Slew Rate Total Input Noise NAB Short RIN= 600; unweighted RIN= 600; A weighted RIN= 0; unweighted RO LOmin F/Rl F/Rh EQl EQh THD Output Resistance Minimum Resistance Load Rev. Low Level (pin 8) Forward High Level (pin 8) Normal Low Level (pin 16) Metal High Level (pin 16) Total Harmonic Distortion VO = 1V; f = 1KHz metal VO = 1V; f = 1KHz normal VO = 1V; f = 10KHz metal VO = 1V; f = 10KHz normal SVR1 CS CCT S/N Ripple Rejection Channel Separation Channel Cross talk Signal to Noise VO = 388mV; metal NAB short IN2 = ON; IN1 = OFF IN2 = OFF; IN1 = ON 0 3.2 0 3.2 0.02 0.02 0.05 0.04 75 60 80 63 1 0.8 VS 0.8 VS 1 0.8 0.5 0.45 1 f = 400Hz NAB short NAB short THD = 1%, VCC = 7.6V -1 2.0 700 110 32 1 100 3.6 10 Input referred (ripple = 1V) OFF ON 0 3.2 80 Test Condition Min. 6 Typ. 8 7.5 105 0.8 VS Max. 11 Unit V mA dB V V dB K V A dB dB dB Vrms V/s V V V K K V V V V % % % % dB dB dB dB 4/11 TDA7334 Figure 1: Quiescent Current vs. Supply Figure 2: D.C. Output vs. Supply Voltage Figure 3: Forward/Reverse Threshold Figure 4: Metal/Normal Threshold Figure 5: Mute Threshold Figure 6: Mute Attenuation vs. Frequency 5/11 TDA7334 Figure 7: Mute Attenuation vs. Output Level Figure 8: THD vs. Frequency Figure 9: THD + N vs. Frequency Figure 10: THD vs. Supply Voltage Figure 11: Load Characteristic Figure 12: Signal Handling vs. Supply Voltage 6/11 TDA7334 Figure 13: Total Input Noise vs. Input Resistance Figure 14: Cross Channel vs. Frequency Figure 15: Cross Talk vs. Frequency Figure 16: SVR vs. Frequency Figure 17: SVR vs. Frequency Figure 18: Power Bandwidth 7/11 TDA7334 Figure 19: Voltage Gain vs. Input Voltage Figure 20: NAB Network 8/11 TDA7334 SO16 PACKAGE MECHANICAL DATA DIM. MIN. A a1 a2 b b1 C c1 D E e e3 F L M S 3.8 0.4 9.8 5.8 1.27 8.89 4.0 1.27 0.62 8 (max.) 0.150 0.016 10 6.2 0.35 0.19 0.5 45 (typ.) 0.386 0.228 0.050 0.350 0.157 0.050 0.024 0.394 0.244 0.1 mm TYP. MAX. 1.75 0.25 1.6 0.46 0.25 0.014 0.007 0.020 0.004 MIN. inch TYP. MAX. 0.069 0.009 0.063 0.018 0.010 9/11 TDA7334 DIP16 PACKAGE MECHANICAL DATA DIM. MIN. a1 B b b1 D E e e3 F I L Z 3.3 1.27 8.5 2.54 17.78 7.1 5.1 0.130 0.050 0.51 0.77 0.5 0.25 20 0.335 0.100 0.700 0.280 0.201 1.65 mm TYP. MAX. MIN. 0.020 0.030 0.020 0.010 0.787 0.065 inch TYP. MAX. 10/11 TDA7334 Information furnished is believed to be accurate and reliable. However, SGS-THOMSON Microelectronics assumes no responsibility for the consequences of use of such information nor for any infringement of patents or other rights of third parties which may result from its use. No license is granted by implication or otherwise under any patent or patent rights of SGS-THOMSON Microelectronics. Specifications mentioned in this publication are subject to change without notice. This publication supersedes and replaces all information previously supplied. SGS-THOMSON Microelectronics products are not authorized for use as critical components in life support devices or systems without express written approval of SGS-THOMSON Microelectronics. (c) 1994 SGS-THOMSON Microelectronics - All Rights Reserved SGS-THOMSON Microelectronics GROUP OF COMPANIES Australia - Brazil - France - Germany - Hong Kong - Italy - Japan - Korea - Malaysia - Malta - Morocco - The Netherlands - Singapore Spain - Sweden - Switzerland - Taiwan - Thaliand - United Kingdom - U.S.A. 11/11 |
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