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| (R) TDA1910 10W AUDIO AMPLIFIER WITH MUTING DESCRIPTION The TDA 1910 is a monolithic integrated circuit in MULTIWATT(R) package, intended for use in Hi-Fi audio power applications, as high quality TV sets. The TDA 1910 meets the DIN 45500 (d = 0.5%) guaranteed output power of 10W when used at 24V/4W. At 24V/8W the output power is 7W min. Features: - muting facility - protection against chip over temperature - very low noise - high supply voltage rejection - low "switch-on" noise. The TDA 1910 is assembled in MULTIWATT(R) package that offers: - easy assembly - simple heatsink ABSOLUTE MAXIMUM RATINGS Symbol Vs Io Io Vi Vi V11 Ptot Tstg, Tj Parameter Supply voltage Output peak current (non repetitive) Output peak current (repetitive) Input voltage Differential input voltage Muting thresold voltage Power dissipation at Tcase = 90C Storage and junction temperature Multiwatt 11V Multiwatt 11H ORDERING NUMBERS: TDA1910 (Multiwatt11 Vertical) TDA1910HS (Multiwatt11 Horizontal) - space and cost saving - high reliability Value 30 3.5 3.0 0 to + Vs 7 Vs 20 -40 to 150 Unit V A A V V V W C TEST CIRCUIT (*) See fig. 13. September 2003 1/15 TDA1910 PIN CONNECTION (Top view) SCHEMATIC DIAGRAM 2/15 TDA1910 TEST CIRCUIT (*) See fig. 13. MUTING CIRCUIT 3/15 TDA1910 THERMAL DATA Symbol Rth j-case Parameter Thermal resistance junction-case max Value 3 Unit C/W ELECTRICAL CHARACTERISTICS (Refer to the test circuit, Tamb = 25 C, Rth (heatsink) = 4C/W, unless otherwise specified) Symbol Vs Vo Id VCE sat Parameter Supply voltage Quiescent output voltage Vs = 18V Vs = 24V Vs = 18V Vs = 24V IC = 2A IC = 3A Po Output power d = 0.5% Vs = 18V Vs = 24V Vs = 24V d = 10% Vs = 18V Vs = 24V Vs = 24V d Harmonic distortion f = 40 to 15,000Hz RL= 4 RL = 4 RL = 8 f = 1 KHz RL = 4 RL = 4 RL = 8 6.5 10 7 8.5 15 9 Test condition Min. 8 8.3 11.5 9.2 12.4 19 21 1 1.6 Typ. Max. 30 10 13.4 32 35 Unit V V Quiescent drain current mA Output stage saturation voltage V 7 12 7.5 9.5 17 10 W f = 40 to 15,000 Hz Vs = 18V RL = 4 Po = 50 mW to 6.5W Vs = 24V RL = 4 Po = 50 mW to 10W Vs = 24V RL = 8 Po = 50 mW to 7W RL = 4 Po = 10W Vs = 24V f2 = 8 KHz f1 = 250 Hz (DIN 45500) F = 1 KHz, Vs = 18V vs = 24V Vs = 24V Vs = 18V Vs = 24V f = 1 KHz Vs = 24V RL = 4 RL = 8 f = 1 KHz Po = 12W Po = 7.5W 0.2 0.2 0.2 0.5 0.5 0.5 % d Intermodulation distortion 0.2 % Vi Input sensitivity RL = 4 Po = 7 W RL = 4 Po = 12 W RL = 8 Po = 7.5W 1.8 2.4 60 170 220 245 mV Vi Ri Id Input saturation voltage (rms) V 100 K Input resistance (pin 5) Drain current 820 475 mA 4/15 TDA1910 ELECTRICAL CHARACTERISTICS (continued) Symbol h Efficiency Parameter Test condition Vs = 24V RL = 4 RL = 8 Vs = 24V Vs = 24V Po = 12W f = 1 KHz Vs = 24V f = 1 KHz RL = 4 Po = 1W Rg = 50 Rg = 1K Rg = 10K Rg = 50 Rg = 1K Rg = 10K S/N Signal to noise ratio Vs = 24V Po = 12W RL = 4 Rg = 10K Rg = 0 Rg = 10K Rg = 0 SVR Supply voltage rejection 29.5 f = 1 KHz Po = 12W Po = 7.5W RL = 4 RL = 4 d 5% Po = 1W Min. Typ. Max. Unit % 62 65 10 to 120,000 40 to 15,000 75 30 1.2 1.3 1.5 2.0 2.0 2.2 103 105 100 100 60 30.5 3.0 3.2 4.0 5.0 5.2 6.0 BW BW Small signal bandwidth Power bandwidth Hz Hz dB dB Gv Gv eN Voltage gain (open loop) Voltage gain (closed loop) Total input noise () V () V () 97 dB () 93 50 dB dB C Vs = 24V RL = 4 fripple = 100 Hz Rg = 10 K Ptot = 8W Tsd Thermal sjut-down case (*) temperature 110 125 MUTING FUNCTION (Refer to Muting circuit) VT Muting-off threshold voltage (pin 11) Muting-on threshold voltage (pin 11) Input resistance (pin 1) Muting off Muting on R11 AT Input resistance (pin 11) Muting attenuation Rg + R1 = 10 K 150 50 60 1.9 4.7 V VT 0 6 1.3 Vs 200 10 30 V R1 80 K K dB Note : () Weighting filter = curve A. ( ) Filter with noise bandwidth: 22 Hz to 22 KHz. (*) See fig. 29 and fig. 30. 5/15 TDA1910 Figure 1. Quiescent output voltage vs. supply voltage Figure 2. Quiescent drain current vs. supply voltage Figure 3. Open loop frequency response Figure 4. Output power vs. supply voltage Figure 5. Output power vs. supply voltage Fi gure 6. Distortion vs. output power Fi gure 7. Distortion vs. output power Figure 8. Output power vs. frequency Figure 9. Output power vs. frequency 6/15 TDA1910 Figure 10. Output power vs. input voltage Figure 11. Output power vs. input voltage Figure 12. Total input noise vs. source resistance Figure 13. Values of capacitor CX vs. bandwidth (BW) and gain (GV) Figure 14. Supply voltage rejection vs. voltage gain Figure 15. Supply voltage re je cti o n v s. so urce resistance Figure 16. Power dissipation and efficiency vs. output power Figure 17. Power dissipation and efficiency vs. output power F i gu re 1 8. Ma x p o wer d i ssi p ati o n vs. sup pl y voltage 7/15 TDA1910 APPLICATION INFORMATION Figure 19. Application circuit without muting Figure 20. PC board and component lay-out of the circuit of fig. 19 (1:1 scale) Figure 21. Application circuit with muting Performance (circuits of fig. 19 and 21) Po = 12W (40 to 15000 Hz, d 0.5%) Vs = 24V Id = 0.82A Gv = 30 dB 8/15 TDA1910 APPLICATION INFORMATION (continued) Figure 22. Two position DC tone control (10 dB boost 50 Hz and 20 KHz) using change of pin 1 resistance (muting function) Figure 23. Frequency response of the circuit of fig. 22 Figure 24. 10 dB 50 Hz boos tone control using change of pin 1 resistance (muting function) Figure 25. Frequency response of the circuit of fig. 24 Figure 26. Squelch function in TV applications Figure 27. Delayed muting circuit 9/15 TDA1910 MUTING FUNCTION The output signal can be inhibited applying a DC voltage VT to pin 11, as shown in fig. 28 Figure 28 The input resistance at pin 1 depends on the threshold voltage VT at pin 11 and is typically. R1 = 200 K @ 1.9V VT 4.7V R1 = 10 0V VT 1.3V @ 6V VT Vs muting-off muting-on Referring to the following input stage, the possible attenuation of the input signal and therefore of the output signal can be found using the following expression. AT = Vi V5 = Rg + R5 R1 R5 R1 where R5 100 K Considering Rg = 10 K the attenuation in the muting-on condition is typically AT = 60 dB. In the muting-off condition, the attenuation is very low, typically 1.2 dB. A very low current is necessary to drive the threshold voltage VT because the input resistance at pin 11 is greater than 150 K. The muting function can be used in many cases, when a temporary inhibition of the output signal is requested, for example: - in switch-on condition, to avoid preamplifier power-on transients (see fig. 27) - during commutations at the input stages. - during the receiver tuning. The variable impedance capability at pin 1 can be useful in many applications and we have shown 2 examples in fig. 22 and 24, where it has been used to change the feedback network, obtaining 2 different frequency responses. 10/15 TDA1910 APPLICATION SUGGESTION The recommended values of the components are those shown on application circuit of fig. 21. Different values can be used. The following table can help the designer. Component Raccom. value 10K Purpose Larger than Smaller than recommended value recommended value Increase of the atteDecrease of the nuation in muting-on attenuation in muting condition. Decrease on condition. of the input sensitivity. Increase of gain. Decrease of gain. Increase quiescent current. Increase of gain. Allowed range Min. Max. Rg + R1 Input signal imped. for muting operation R2 3.3K Close loop gain setting. Close loop gain setting. Frequency stability 9 R3 R3 R4 100 1 Decrease of gain. Danger of oscillation at high frequencies with inductive loads. Increase of the switch-on noise. R2/9 P1 20K Volume potentiometer. Input DC decoupling. Decrease of the input impedance and of the input level. Higher low frequency cutoff. 10K 100K C1 C2 C3 C4 C5 C6 1 F 1 F 0.22F 2.2F 0.1F 10F Inverting input DC decoupling. Supply voltage bypass. Ripple rejection. Increase of the switch-on noise. Higher low frequency cutoff. Danger of oscillations. 0.1F Increase of SVR. Increase of the switch-on time Degradation of SVR Increase of the distortion at low frequency. Danger of oscillation. Higher low frequency cutoff. 2.2F 100F C7 C8 C9 47F 0.22F 2200F (RL = 4) 1000 F (RL = 8) Bootstrap. Frequency stability. Output DC decoupling. 10F 100F 11/15 TDA1910 THERMAL SHUT-DOWN The presence of a thermal limiting circuit offers the following advantages: 1) An overload on the output (even if it is permanent), or an above limit ambient temperature can be easily supported since the Tj cannot be higher than 150C. 2) The heatskink can have a smaller factor of safety compared with that of a conventional circuit. There is no possibility of device damage due to high junction temperature. If for any reason, the junction temperature increases up to 150C, the thermal shut-down simply reduces the power dissipation and the current consumption. The maximum allowable power dissipation depends upon the size of the external heatsink (i.e. its thermal resistance); fig. 31 shows this dissipable power as a function of ambient temperature for different thermal resistance. Figure 29. Output power and dr ai n c urr en t vs. case temperature Figure 30. Output power and dra i n cu rre nt vs. case temperature Figure 31. Maximum allow able power dissipation vs. ambient temperature MOUNTING INSTRUCTIONS The power dissipated in the circuit must be removed by adding an external heatsink. Thanks to the Multiwatt(R) package attaching the heatsink is very simple, a screw or a compression spring (clip) being sufficient. Between the heatsink and the package it is better to insert a layer of silicon grease, to optimize the thermal contact; no electrical isolation is needed between the two surfaces. 12/15 TDA1910 DIM. MIN. A B C D E F G G1 H1 H2 L L1 L2 L3 L4 L7 M M1 S S1 Dia1 21.9 21.7 17.4 17.25 10.3 2.65 4.25 4.73 1.9 1.9 3.65 4.55 5.08 17.5 10.7 22.2 22.1 0.49 0.88 1.45 16.75 19.6 20.2 22.5 22.5 18.1 17.75 10.9 2.9 4.85 5.43 2.6 2.6 3.85 0.862 0.854 0.685 0.679 0.406 0.104 0.167 0.186 0.075 0.075 0.144 0.179 0.200 0.689 0.421 0.874 0.87 1.7 17 1 0.55 0.95 1.95 17.25 0.019 0.035 0.057 0.659 0.772 0.795 0.886 0.886 0.713 0.699 0.429 0.114 0.191 0.214 0.102 0.102 0.152 0.067 0.669 mm TYP. MAX. 5 2.65 1.6 0.039 0.022 0.037 0.077 0.679 MIN. inch TYP. MAX. 0.197 0.104 0.063 OUTLINE AND MECHANICAL DATA Multiwatt11 V 13/15 TDA1910 DIM. A B C E E1 F G G.1 G2 G3 G4 G5 H1 H2 L1 L2 L3 L4 L5 (Inner) L5 (Outer) L7 R S S1 Dia1 mm TYP. 4.5 inch TYP. 0.177 MIN. 4.373 0.49 1.007 0.88 1.5 16.82 6.61 13.41 3.2 10.01 19.6 19.28 3.61 17.25 10.3 3.4 3.6 2.65 0.75 1.9 1.9 3.65 0.515 1.037 0.9 1.7 17.02 6.807 13.61 3.4 10.21 MAX. 4.627 2.65 1.6 0.55 1.07 0.95 1.9 17.22 7.01 13.81 3.6 10.41 20.2 19.88 4.01 17.75 10.9 4 4.2 2.9 1.25 2.6 2.6 3.85 MIN. 0.172 0.019 0.040 0.035 0.059 0.662 0.260 0.528 0.126 0.394 0.772 0.759 0.142 0.679 0.406 0.134 0.142 0.104 0.030 0.075 0.075 0.144 0.020 0.041 0.035 0.067 0.670 0.268 0.536 0.134 0.402 MAX. 0.182 0.104 0.063 0.022 0.042 0.037 0.075 0.678 0.276 13.810 0.142 0.410 0.795 0.783 0.158 0.699 0.429 0.157 4.200 0.114 0.049 0.102 0.102 0.152 OUTLINE AND MECHANICAL DATA 19.58 3.81 17.5 10.6 3.75 3.9 1 0.771 0.150 0.689 0.417 0.148 0.154 0.039 Multiwatt11 H (Short leads) V R R V V G5 G4 B L5 V E L2 L4 N L7 L1 L3 C A X G1 H2 F G DETAIL X E E1 H2 G3 G2 F H1 Dia.1 0.25min 0.50max P R1 S S1 60 to 90 MULT11LHM 14/15 TDA1910 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 15/15 |
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