(R) 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 September 2003 1/9 TDA7273 ABSOLUTE MAXIMUM RATINGS Symbol Parameter VS Supply Voltage Io Output Current (max) Top Tstg, Tj Test Conditions Unit 9 V 70 mA -20 to 70 C -40 to +150 C Operating Temperature Range Storage & Junction Temperature Range THERMAL DATA Symbol Rthj-amb Description Thermal Resistance Junction-ambient Max DIP-16 SO-16 Unit 100 200 C/W DC CHARACTERISTICS: Tamb = 25C; VS = 3V; RL = 10K (Preamplifier), RL = 32 (Headphone); VIN = 0; VOL control = Vref Terminal No Terminal Voltage (V) TEST CIRCUIT 2/9 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 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 Test Condition Supply Voltage Min. Typ. 1.8 Quiescent Current Reference Voltage 1.3 14 1.49 Max. Unit 7 V 20 1.7 mA V PREAMPLIFIER SECTION GVO Open Loop Gain GV Vo Close Loop Gain Output Voltage 70 THD = 1% 30 600 33 850 35 dB mV A % Bias Current Total Harmonic Distortion Vo = 330mVrms Ct Cross Talk Rg = 2.2K; Vo = 330mVrms 74 EN Output Noise Rg = 2.2K; BW = 22Hz to 22KHz 100 V Ripple Rejection Rg = 2.2K VR = 100mVrms f = 100Hz; CSVR = 100F 40 50 dB 1.50 V THD = 10%; 15 30 mW Ib THD SVR 3 0.05 dB 0.25 dB HEADPHONE DRIVER Vo(DC) DC Output Voltage Po Output Power Po Transient Output Power THD = 10% RL = 16 Close Loop Gain Total Harmonic Distortion Po = 5mW Po = 5mW 28 31 0.2 Cross Talk Rg = 10K; Po = 5mW 40 50 dB Ripple Rejection Vr = 100mVrms, f = 100Hz Vol. control = 1/3Vref CSVR = 100F; Rg =600 47 dB 75 dB GV THD Ct SVR Volume Control Range 50 66 mW 34 1 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 (VS = 3V, RL = 32) (DRIVER) 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 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 OUTLINE AND MECHANICAL DATA 3.3 0.130 DIP16 Z 1.27 0.050 7/9 TDA7273 mm inch OUTLINE AND MECHANICAL DATA DIM. MIN. TYP. MAX. MIN. TYP. MAX. A 2.35 2.65 0.093 0.104 A1 0.1 0.3 0.004 0.012 B 0.33 0.51 0.013 0.020 C 0.23 0.32 0.009 0.013 D 10.1 10.5 0.398 0.413 E 7.4 7.6 0.291 0.299 e 1.27 0.050 H 10 10.65 0.394 0.419 h 0.25 0.75 0.010 0.030 L 0.4 1.27 0.016 0.050 K SO16 Wide 0 (min.)8 (max.) L h x 45 A B e K A1 H D 16 9 E 1 8/9 8 C TDA7273 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. Specifications mentioned in this publication are subject to change without notice. This publication supersedes and replaces all information previously supplied. STMicroelectronics products are not authorized for use as critical components in life support devices or systems without express written approval of STMicroelectronics. The ST logo is a registered trademark of STMicroelectronics. All other names are the property of their respective owners (c) 2003 STMicroelectronics - All rights reserved STMicroelectronics GROUP OF COMPANIES Australia - Belgium - Brazil - Canada - China - Czech Republic - Finland - France - Germany - Hong Kong - India - Israel - Italy - Japan Malaysia - Malta - Morocco - Singapore - Spain - Sweden - Switzerland - United Kingdom - United States www.st.com 9/9