TDA7334 LOW NOISE STEREO PREAMPLIFIER 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, 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. TEST CIRCUIT R15 6.2K C4 10nF R11 1.2K R13 6.8K 9 R10 600Ω C5 300pF 13 1 INR2 14 INR1 15 11 AMP1 R1 600Ω C2 300pF INL1 2 INL2 3 R2 600Ω AMP1 C1 1µF R4 6.8K R5 300K C8 10nF November 1999 OUTR 8 F/RSW C13 0.22µF 7 MUTE R7 10K +VS AMP2 C9 100nF 32dB 6 OUTL C14 0.22µF RN EQLI 5 20K 16 EQLO R14 6.2K GND 20K 4 R3 1.2K +VS C12 100nF AMP2 R9 600Ω INPUT L VS RN 32dB INPUT R C3 300pF R12 300K 12 EQRI C11 1µF C6 300pF EQRO EQSW GND R8 10K +VS D94AU079 1/11 TDA7334 ABSOLUTE MAXIMUM RATINGS Symbol Parameter Value Unit VS Supply Voltage 12 V Ptot Total Power Dissipation 1 W Top Operating Temperature Range -40 to 85 °C Tstg Storage Temperature Range -40 to 150 °C PIN CONNECTION (Top view) THERMAL DATA Rth j-pins 2/11 Thermal resistance junction-pins DIP 16 SO16 100 200 °C/W TDA7334 Application Circuit R15 6.2K C7 10nF EQRO R13 6.8K R11 1.2K R12 300K 12 9 VS 13 1 32dB C11 1µF INR2 14 INR1 15 11 AMP1 GND AMP2 8 OUTR INL2 7 2 AMP1 3 GND 32dB TR1 1K C14 0.22µF 6 4 R5 300K R4 6.8K C1 1µF C8 10nF R6 30K MUTE AMP2 C9 0.68µF INPUT L OUTL RN EQLI 5 16 VS R8 30K EQSW GND EQLO C4 0.68µF D94AU080 R14 6.2K 1 VS R7 30K C10 0.68µF INL1 DC (V) GND C13 0.22µF F/RSW INPUT R PIN C12 100nF EQRI TR2 1K R3 1.2K +VS RN 2 3 4 5 6 0 0 3.6 3.6 3.6 7 8 9 10 11 12 13 14 15 8.0 N.C. 3.6 3.6 3.6 0 0 16 P.C. Board and component layout of the Application Circuit (1:1 scale) 3/11 TDA7334 ELECTRICAL CHARACTERISTICS (V S = 8V;RIN = 600Ω; f = 1KHz; T amb = 25°C; unless otherwise specified (see figure 2) Symbol Parameter VS Supply Voltage IS Supply Current SVR Test Condition Min. Typ. Max. 6 8 11 V 7.5 9.0 mA Ripple Rejection Input referred (ripple = 1V) MUTEth Mute (Pin 7) OFF ON MUTEA Mute Attenuation 60 RI Input Resistance 100 Vout DC Output Voltage DC 3.2 II Input Bias Current GVO Open Loop Gain f = 400Hz GV Closed Loop Gain NAB short 30 ∆GV Closed Loop Gain Match NAB short -1 VOM Signal Handling THD = 1%, VCC = 7.6V 1.8 RN Resistance Normal Position SR Slew Rate NAB Short eN Total Input Noise RIN = 600Ω; unweighted RO Output Resistance dB 0.8 VS 80 V V dB KΩ 3.6 4.2 V 10 µA 110 31 dB 32.5 dB 1 dB 2.0 100 Vrms 300 Ω 1 V/µs 0.8 µV RIN = 600Ω; A weighted 0.5 µV RIN = 0; unweighted 0.45 µV 1 KΩ F/Rl Rev. Low Level (pin 8) IN2 = ON; IN1 = OFF 0 0.8 V F/Rh Forward High Level (pin 8) IN2 = OFF; IN1 = ON 3.5 VS V 0 0.8 V 3.5 VS V EQl Normal Low Level (pin 16) EQh Metal High Level (pin 16) THD Total Harmonic Distortion Ripple Rejection VO = 1V; f = 1KHz metal 0.02 VO = 1V; f = 1KHz normal 0.02 VO = 1V; f = 10KHz metal 0.05 % VO = 1V; f = 10KHz normal 0.04 % NAB short % 0.1 % 75 dB CS Channel Separation (L to R) 45 60 dB CCT Channel Cross talk (F to R) 60 80 dB S/N Signal to Noise 63 dB SVR 1 4/11 105 0 3.5 Unit VO = 388mV; metal 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 8/11 Figure 20: NAB Network TDA7334 mm DIM. MIN. a1 0.51 B 0.77 TYP. inch MAX. MIN. TYP. MAX. 0.020 1.65 0.030 0.065 b 0.5 0.020 b1 0.25 0.010 D 20 0.787 E 8.5 0.335 e 2.54 0.100 e3 17.78 0.700 F 7.1 0.280 I 5.1 0.201 L Z OUTLINE AND MECHANICAL DATA 3.3 0.130 1.27 DIP16 0.050 9/11 TDA7334 mm DIM. MIN. TYP. A a1 inch MAX. MIN. TYP. 1.75 0.1 0.25 a2 MAX. 0.069 0.004 0.009 1.6 0.063 b 0.35 0.46 0.014 0.018 b1 0.19 0.25 0.007 0.010 C 0.5 c1 0.020 45° (typ.) D (1) 9.8 10 0.386 0.394 E 5.8 6.2 0.228 0.244 e 1.27 0.050 e3 8.89 0.350 F (1) 3.8 4 0.150 0.157 G 4.6 5.3 0.181 0.209 L 0.4 1.27 0.016 0.050 M S OUTLINE AND MECHANICAL DATA 0.62 0.024 SO16 Narrow 8°(max.) (1) D and F do not include mold flash or protrusions. Mold flash or potrusions shall not exceed 0.15mm (.006inch). 10/11 TDA7334 Information furnished is believed to be accurate and reliable. However, STMicroelectronics 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 STMicroelectronics. Specification mentioned in this publication are subject to change without notice. This publication supersedes and replaces all information previously supplied. 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