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| TDA7273 SINGLE CHIP STEREO CASSETTE PLAYBACK SYSTEM WIDE OPERATING SUPPLY VOLTAGE (1.8V to 7V) INPUT COUPLING WITHOUT CAPACITORS BUILT-IN DC STEREO VOLUME CONTROL BUILT-IN RIPPLE FILTERS LOW QUIESCENT CURRENT NO EXTERNAL BOUCHEROT CELL MAX OUTPUT CURRENT 70mA PEAK DESCRIPTION The TDA7273 is a monolithic integrated circuit designed for portable cassette players market. It comprises preamplifiers, DC volume control, and headphone drivers. DIP16 SO16 ORDERING NUMBERS: TDA7273 TDA7273D BLOCK DIAGRAM May 1997 1/9 TDA7273 ABSOLUTE MAXIMUM RATINGS Symbol VS Io Top Tstg , Tj Supply Voltage Output Current (max) Operating Temperature Range Storage & Junction Temperature Range Parameter Test Conditions 9 70 -20 to 70 -40 to +150 Unit V mA C C THERMAL DATA Symbol Rthj-amb Description Thermal Resistance Junction-ambient Max DIP-16 100 SO-16 200 Unit C/W DC CHARACTERISTICS: Tamb = 25C; VS = 3V; RL = 10K (Preamplifier), RL = 32 (Headphone); VIN = 0; VOL control = Vref Terminal No Terminal Voltage (V) 1 0 2 1.5 3 1.5 4 1.5 5 1.5 6 2.7 7 1.5 8 0 9 3 10 1.5 11 1.5 12 1.5 13 1.5 14 1.5 15 1.5 16 1.5 TEST CIRCUIT 2/9 TDA7273 PIN CONNECTION (Top view) ELECTRICAL CHARACTERISTICS (Tamb = 25C, VS = 3V, f = 1KHz, RL = 32 Vol. control = 2/3Vref unless otherwise specified) Symbol VS Id Vref Parameter Supply Voltage Quiescent Current Reference Voltage 1.3 Test Condition Min. 1.8 14 1.49 Typ. Max. 7 20 1.7 Unit V mA V PREAMPLIFIER SECTION GVO GV Vo Ib THD Ct EN SVR Open Loop Gain Close Loop Gain Output Voltage Bias Current Total Harmonic Distortion Cross Talk Output Noise Ripple Rejection Vo = 330mVrms Rg = 2.2K; Vo = 330mVrms Rg = 2.2K; BW = 22Hz to 22KHz R g = 2.2K VR = 100mVrms f = 100Hz; CSVR = 100F 40 THD = 1% 30 600 70 33 850 3 0.05 74 100 50 0.25 35 dB dB mV A % dB V dB HEADPHONE DRIVER Vo(DC) Po Po GV THD Ct SVR DC Output Voltage Output Power Transient Output Power Close Loop Gain Total Harmonic Distortion Cross Talk Ripple Rejection THD = 10%; THD = 10% RL = 16 Po = 5mW Po = 5mW Rg = 10K; Po = 5mW Vr = 100mVrms, f = 100Hz Vol. control = 1/3V ref C SVR = 100F; Rg =600 66 40 28 15 1.50 30 50 31 0.2 50 47 34 1 V mW mW dB % dB dB Volume Control Range 75 dB 3/9 TDA7273 Figure 1: Application Circuit Figure 2: P.C. Board and Component Layout of the Circuit of Figure 1 (1:1 scale) 4/9 TDA7273 Figure 3: Supply Current vs. Supply Voltage (Preamplifier + Driver) Figure 4: Vref, vs. Supply Voltage (pin 16) Figure 5: Closed Loop Gain vs. Frequency (VS = 3V) (PREAMPLIFIER) Figure 6: THD vs. Frequency (VS = 3V, Vo =330mVrms, RL = 10K) (PREAMPLIFIER) Figure 7: SVR vs. Frequency (PREAMPLIFIER) Figure 8: Quiescent Output Voltage vs. Supply Voltage (DRIVER) VS = 3V Rg = 2.2K VR = 100mVrms CSVR = 100F 5/9 TDA7273 Figure 9: Closed Loop Gain vs Frequency (DRIVER) (VS = 3V, RL = 32) Figure 10: Output Power vs. Supply Voltage (Vol = 2/3Vref, RL = 32, THD = 10%, f = 1KHz) (DRIVER) Figure 11: THD vs. Output Power (Vo = 2/3Vref, VS = 3V, RL = 32, f = 1KHz) (DRIVER) Figure 12: THD vs. Frequency (Po = 5mW, VS = 3V RL = 32) (DRIVER) Figure 13: SVR vs. Frequency VS = 3V (RL = 32, Vr = 100Vrms Rg = 600, CSVR = 100mV) (DRIVER) Figure 14: Volume Control (0dB = 10mW, VS = 3V Rvol = 50K, RL = 32, f = 1KHz) vs. Volume Setting (DRIVER) 6/9 TDA7273 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. 7/9 TDA7273 SO16 PACKAGE MECHANICAL DATA DIM. MIN. A a1 a2 b b1 C c1 D E e e3 F L M S 7.4 0.5 10.1 10.0 1.27 8.89 7.6 1.27 0.75 8 (max.) 0.291 0.020 10.5 10.65 0.35 0.23 0.5 45 (typ.) 0.398 0.394 0.050 0.350 0.299 0.050 0.030 0.413 0.419 0.1 mm TYP. MAX. 2.65 0.2 2.45 0.49 0.32 0.014 0.009 0.020 0.004 MIN. inch TYP. MAX. 0.104 0.012 0.096 0.019 0.013 8/9 TDA7273 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. Specification mentioned in this publication are subject to change without notice. This publication supersedes and replaces all information previously supplied. SGSTHOMSON 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) 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 Kingdom - U.S.A. 9/9 |
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