TDA2320A STEREO AMPLIFIER .. . .. WIDE SUPPLY VOLTAGE RANGE (3 to 36V) SINGLE OR SPLIT SUPPLY OPERATION VERY LOW CURRENT CONSUMPTION (0.8mA) VERY LOW DISTORTION NO POP-NOISE N DIP8 (Plastic Package) DESCRIPTION The TDA2320A is a stereo class A preamplifier intended for application in portable cassette players and high quality audio systems. The TDA2320A is a monolithic integrated circuit in a 8 lead plastic dip. ORDER CODES Temperature Range Part Number o o -40 C, +105 C TDA2320A Package N • PIN CONNECTIONS (top view) Output 1 1 Inverting Input 1 2 - Non-inve rting Input 1 3 + GND October 1997 4 8 VCC 7 Output 2 - 6 Inve rting Input 2 + 5 Non-inverting Input 2 1/12 TDA2320A SCHEMATIC DIAGRAM (1/2 TDA2320A) Inverting Input Non-inverting Input VCC R1 R5 R3 Q13 Q8 Q6 Q3 R6 Q11 R7 D3 Q14 Q9 D5 Output Q4 R8 Q5 Q2 Q7 C2 Q12 D1 Q16 Q15 Q17 Q1 D4 Q10 D2 C1 R2 R4 GND ABSOLUTE MAXIMUM RATINGS Symbol Parameter VCC Supply Voltage Ptot Total Power Dissipation at Tamb = 70 C Tstg, Tj 2/12 o Storage and Junction Temperature Value Unit 36 V 400 mW –40 to 150 o C TDA2320A ELECTRICAL CHARACTERISTICS VCC = 15V, T amb = 25oC (unless otherwise specified) (refer to the test circuits) Symbol VCC ICC Iib Vio Iio Avd VOPP Parameter Supply Voltage (*) Supply Current (*) Input Bias Current Input Offset Voltage Rs ≤ 10kΩ Input Offset Current Open Loop Voltage Gain VCC = 15V VCC = 4.5V Output Voltage Swing (f = 1kHz, RL = 600Ω) (*) Min. 3 f f f f = = = = FBP SR THD Gain-bandwidth Product f = 20kHz Power Bandwidth (*) Vo = 5VPP, THD = 1% Slew Rate (*) Distortion (Vo = 2V, AV = 20dB) (*) Equivalent Input Noise Voltage (**) Curve A B = 22Hz to 22kHz VO1/V02 SVR f = 1kHz Channel Separation (**) f = 1kHz Supply Voltage Rejection Ratio(**) f = 100Hz 1 10 5 50 Unit V mA nA mV nA dB V 13 2.5 MHz 1.5 2.5 40 1 70 1.6 kHz f = 1kHz f = 10kHz en 0.8 150 Max. 36 2 500 80 70 50 70 333Hz 1kHz 10kHz 1kHz VCC = 15V VCC = 4.5V GBP Typ. Rs Rs Rs Rs Rs Rs Rs = = = = = = = 50Ω 600Ω 5kΩ 50Ω 600Ω 5kΩ 600Ω V/µs % 0.03 0.08 1 1.1 1.5 1.3 1.5 2 9 µV 1.4 nV√ Hz dB 100 dB 80 (*) Test circuit of figure 1 (**) Test circuit of figure 2 3/12 TDA2320A TYPICAL APPLICATION STEREO PREAMPLIFIER FOR CASSETTE PLAYERS 18kΩ VCC 0.1µF 22µF 82kΩ 4.7µF 5 0.3mV 8 1/2 TDA2320A 220pF TAPE HEAD 100kΩ 1µF 7 20kΩ 4 6 180kΩ 10nF 15kΩ 150Ω 22µF 18kΩ 22µF 82kΩ 4.7µF 3 0.3mV TAPE HEAD 220pF 100kΩ 1/2 TDA2320A 1µF 1 20kΩ 2 180kΩ 15kΩ 10nF 150Ω 22µF TEST CIRCUITS Figure 2 Figure 1 VCC 22µF +7.5V 18kΩ 0.1µF 0.1µF 82kΩ 0.22µF 220pF IN 220pF 100kΩ 1/2 TDA2320A Rs 1µF 1/2 TDA2320A 0.1µF 22kΩ Rx -7.5V 3.3kΩ 150Ω 33Ω 47µF 4/12 OUT OUT TDA2320A Figure 3 : Supply Current versus Supply Voltage Figure 4 : Supply Current versus Ambient Temperature Figure 5 : Output Voltage Swing versus Load Resistance Figure 6 : Power Bandwidth Figure 7 : Total Harmonic Distortion versusOutput Voltage Figure 8 : Total Input Noise versus Source Resistance 5/12 TDA2320A Figure 9 : Noise Density versus Frequency Figure 10 :RIAA Preamplifier Response Figure 11 :Tape Preamplifier Frequency 6/12 TDA2320A APPLICATION INFORMATION Figure 12 : Stereo RIAA Preamplifier R5 18kΩ +15V 22µF C3 C13 0.1µF R1 100kΩ 4.7µF 5 IN (L) C1 R2 120kΩ C5 100pF 8 1/2 TDA2320A C14 7 4 6 C9 3.3nF 1µF OUT (L) R13 1kΩ R9 220kΩ C10 R7 820Ω C7 10µF R10 22kΩ 15nF R6 18kΩ 22µF C4 R3 100kΩ 4.7µF IN (R) C2 R4 120kΩ 3 C6 100pF 1/2 TDA2320A C15 1 2 C11 OUT (R) R14 1kΩ C12 R8 820Ω 10µF 3.3nF R11 220kΩ 1µF C8 R12 22kΩ 15nF Figure 13 : P.C. Board and Components layout of the Circuit of figure 12 7/12 TDA2320A Figure 14 : Second Order 2kHz Butterworth Crossover Filter for Hi-Fi Active Boxes Figure 15 :Third Order 2.8kHz Bessel Crossover Filter for Hi-Fi Actives Boxes +15V 100nF +15V 100nF 12nF 0.22µF 10kΩ 10kΩ 6 5 8 1/2 TDA2320A 4 5.6nF 10kΩ 5.6nF IN C3 6.8nF 0.47µF 5kΩ 100nF C1 R1 0. 22µF 12kΩ TO WOOFER AMPLIFIER R2 12kΩ R3 12kΩ 1 C6 4.7nF 0.1µF 5kΩ 22kΩ TO TWEETER AMPLIFIER R5 12kΩ 4 -15V f c = 2.8kHz INPUT R6 8.2k Ω 3 5 8 1/2 TDA2320A C4 1.2nF C2 4.7nF 2 1/2 TDA2320A 6 5.6kΩ -15V f c = 2kHz 5.6nF 7 C7 4.7nF C8 4.7nF 2 1/2 TDA2320A 3 7 C5 0.47µF 5kΩ 100nF 8/12 WOOFER AMPLIFIER R4 5.6kΩ C9 1 0.1µF 5kΩ R7 47kΩ R8 5.6kΩ 5.6kΩ Figure 16 : Frequency Response (circuit of figure 14) P1 Figure 17 : Frequency Response (circuit of figure 15) P2 TWEETER AMPLIFIER TDA2320A Figure 18 : 200Hz to 2kHz Active Bandpass Filter for Midrange Speakers V CC 10nF 0.3µF 10kΩ 56nF 6 1/2 TDA2320A 2 1/2 TDA2320A 56nF 12kΩ 1 12kΩ 5 5kΩ 3 IN 12kΩ 0.47µF 7 1.8nF 6.8nF 0.1µF 22kΩ 5.6kΩ V CC Figure 19 : Subsonic Filter 10k Ω C C fc (Hz) C (µF) 15 22 30 55 100 0.68 0.47 0.33 0.22 0.1 3 Vin 1/2 TDA2320A 22kΩ 1 Vout 2 - Figure 20 :High-cut Filter C2 Vin 10kΩ 10kΩ 3 1/2 TDA2320A C1 2 1 Vout fc (kHz) C1 (nF) C2 (nF) 3 5 10 15 3.9 2.2 1.2 0.68 6.8 4.7 2.2 1.5 - 9/12 TDA2320A Figure 21 : Fifth Order 3.4kHz Low-pass Butterworth Filter C2 R1 Ri R2 Ci C4 3 1/2 TDA2320A C1 R3 1 R4 5 2 - C3 1/2 TDA2320A 7 6 - 1st order 2nd order 3rd order For fc = 3.4kHz and Ri = R1 = R2 = R3 = R4 = 10kΩ, we obtain : C1 = 1.354 . 1 1 = 6.33nF . R 2Π fc C3 = 0.309 . 1 1 . = 1.45nF R 2Π fc C1 = 0.421 . 1 1 = 1.97nF . R 2Π fc C4 = 3.325 . 1 1 = 15.14nF . R 2Π fc C2 = 1.753 . 1 1 = 8.20nF . R 2Π fc The attenuation of the filter is 30dB at 6.8kHz and better than 60dB at 15kHz. Figure 22 : Sixth-pole 355Hz Low-pass Filter (Chebychev type) 6 2 6 2 0.47µF 3 56kΩ 1/2 TDA 2320A 1 10kΩ 10kΩ 5 1/2 TDA 2320A 7 10kΩ 3 86.1nF 1 10kΩ 10kΩ 5 1/2 TDA 2320A 7 3.54nF 16.3nF 60nF 220nF 161nF This is a 6-pole Chebychev type with ±0.25dB ripple in the passband.A decoupling stage is used to avoid the influence of the input impedance of the filter’s characteristics. 10/12 10kΩ 1/2 TDA 2320A The attenuation is about 55dB at 710Hz and reaches 80dB at 1065Hz. The in band attenuation is limited in practice to the ±0.25dB ripple and does not exceed 1/2dB at 0.9fc. TDA2320A Figure 23 : Three Band Tone Control 47nF 11kΩ 47nF +15V 3.6kΩ 100nF 0.22µF IN 3 56kΩ 2 BASS 11kΩ 100kΩ 100kΩ 11kΩ MIDRANGE 3.6kΩ 22nF 6 1/2 TDA2320A 1 1.8kΩ 4.7nF 4 TREBLE 1.8kΩ 500kΩ 6 1/2 TDA2320A 100nF 7 OUT 5 -15V Figure 24 :Frequency Response of the Circuit of figure 23 A : all controls flat B : bass & treble boost, mid flat C : bass & treble cut, mid flat D : mid boost, bass & treble flat E : mid cut, bass treble flat 11/12 TDA2320A PM-DIP8.EPS PACKAGE MECHANICAL DATA 8 PINS -PLASTIC DIP A a1 B b b1 D E e e3 e4 F i L Z Min. Millimeters Typ. 3.32 0.51 1.15 0.356 0.204 Max. 1.65 0.55 0.304 10.92 9.75 7.95 Min. 0.020 0.045 0.014 0.008 Max. 0.065 0.022 0.012 0.430 0.384 0.313 2.54 7.62 7.62 3.18 Inches Typ. 0.131 0.100 0.300 0.300 6.6 5.08 3.81 1.52 0.125 0260 0.200 0.150 0.060 DIP8.TBL Dimensions 1997 SGS-THOMSON Microelectronics – Printed in Italy – All Rights Reserved SGS-THOMSON Microelectronics GROUP OF COMPANIES Australia - Brazil - Canada - China - France - Germany - Hong Kong - Italy - Japan - Korea - Malaysia - Malta - Morocco The Netherlands - Singapore - Spain - Sweden - Switzerland - Taiwan - Thailand - United Kingdo m - U.S.A. 12/12 ORDER CODE : 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 publ ication 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.