TDA7294S STMicroelectronics, TDA7294S Datasheet
TDA7294S
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TDA7294S Summary of contents
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... THERMAL SHUTDOWN ■ CLIP DETECTOR ■ MODULARITY (MORE DEVICES CAN BE EASILY CONNECTED IN PARALLEL TO DRIVE VERY LOW IMPEDANCES) 2 Description The TDA7294S is a monolithic integrated circuit in Multiwatt15 package, intended for use as audio Figure 2. Typical Application and Test Circuit C2 R2 22µF 680Ω IN- C1 470nF ...
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... TDA7294S Figure 3. Pin Connection (Top view) TAB CONNECTED TO PIN 8 Table 2. Quick Reference Data Symbol Parameter V Supply Voltage Operating S G Closed Loop Gain LOOP P Output Power tot SVR Supply Voltage Rejection Table 3. Thermal Data Symbol R Thermal Resistance Junction-case th j-case 2/ (POWER OUT 13 +V (POWER) ...
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... ± 30V 4Ω (***) 5W 1kHz 0.1 to 20W 20Hz to 20kHz ± 28V 4Ω 5W 1kHz 0.1 to 20W 20Hz to 20kHz O ≤ ± 40V V S TDA7294S Value ± ± 100 100 100 100 100 150 = 50Ω 25° 1kHz; unless g amb Min. Typ. Max. ±12 ±45 20 ...
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... TDA7294S Table 5. Electrical Characteristcs (continued) (Refer to the Test Circuit V = ±35V otherwise specified). Symbol Parameter e Total Input Noise Frequency Response (-3dB Input Resistance i SVR Supply Voltage Rejection T Thermal Shutdown S STAND-BY FUNCTION (Ref Stand-by on Threshold Stand-by off Threshold ST off ATT Stand-by Attenuation st-by ...
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... MUTE TIME LARGER MUTE CONSTANT ON/OFF TIME INPUT DC DECOUPLING FEEDBACK DC DECOUPLING MUTE TIME LARGER MUTE CONSTANT ON/OFF TIME TDA7294S SMALLER THAN SUGGESTED DECREASE INPUT IMPEDANCE INCREASE OF GAIN DECREASE OF GAIN SMALLER ST-BY ON/ ON/OFF TIME; POP NOISE SMALLER MUTE ON/OFF TIME HIGHER LOW ...
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... BCDII 100. 4.1 Output Stage The main design task in developping a power operational amplifier, independently of the technology used, is that of realization of the output stage. The solution shown as a principle shematic by Fig.5 represents the DMOS unity - gain output buffer of the TDA7294S. 6/16 LARGER THAN PURPOSE ...
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... In order to fully exploit the capabilities of the power transistors, the protection scheme implemented in this device combines a conventional SOA protection circuit with a novel local temperature sensing technique which " dynamically" controls the maximum dissipation. Figure 6. Principle Schematic of a DMOS unity-gain buffer ref TDA7294S nd breakdown phenomenon, DD 7/16 ...
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... TDA7294S Figure 7. Turn ON/OFF Suggested Sequence +Vs (V) +40 -40 - (mV) V ST-BY 5V PIN #9 (V) V MUTE 5V PIN #10 ( (mA) V OUT (V) OFF ST-BY Figure 8. Single Signal ST-BY/MUTE Control Circuit MUTE/ 8/16 PLAY MUTE MUTE MUTE 20K ST-BY 10K 30K 1N4148 ST-BY OFF D98AU817 STBY 10µF 10µF ...
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... The current generators formed by T4, T7, zener diodes Z1, Z2 and resistors R7,R8 define the minimum drop across the power MOS transistors of the TDA7294S. L1, L2, L3 and the snubbers C9, R1 and C10, R2 stabilize the loops formed by the "bootstrap" circuits and the output stage of the TDA7294S. ...
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... TDA7294S 5.2 BRIDGE APPLICATION Another application suggestion is the BRIDGE configuration, where two TDA7294S are used. In this ap- plication, the value of the load must not be lower than 8Ohm for dissipation and current capability reasons. A suitable field of application includes HI-FI/TV subwoofers realizations. The main advantages offered by this solution are: – ...
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... R12 13K PLAY C13 10µF 9 R13 20K ST-BY R2 R14 30K R15 10K 1N4148 8 C10 10 330nF C14 10µF D2 BYW98100 D7 1N4001 TDA7294S T3 BC394 270 270 BDX53A T4 BC393 BC393 R17 270 L1 1µH D3 1N4148 R6 20K Z1 3.9V 13 C11 22µF R3 680 2 R7 3.3K R16 L3 5µH ...
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... TDA7294S Figure 11. PCB and Component Layout of the fig. 9 Figure 12. Modular Application Circuit MASTER C2 R2 22µF 680Ω C1 470nF R1 22K VMUTE R5 10K VSTBY R4 22K SLAVE 12/16 C7 100nF R3 22K BUFFER +Vs DRIVER SGND 4 MUTE 10 MUTE THERMAL STBY 9 SHUTDOWN STBY 1 8 STBY-GND -Vs C4 10µF C9 100nF C3 10µ ...
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... Figure 13. Modular Application P.C. Board and Component Layout (Component SIDE) Figure 14. Modular Application P.C. Board and Component Layout (Solder SIDE) TDA7294S 13/16 ...
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... TDA7294S 7 Package Information Figure 15. Multiwatt15 (Vertical) Mechanical Data & Package Dimensions mm DIM. MIN. TYP. MAX 2. 0.49 0.55 F 0.66 0.75 G 1.02 1.27 1.52 G1 17.53 17.78 18.03 H1 19.6 H2 20.2 L 21.9 22.2 22.5 L1 21.7 22.1 22.5 L2 17.65 18.1 L3 17.25 17.5 17.75 L4 10.3 10 ...
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... Revision History Table 7. Revision History Date Revision January 2003 February 2005 1 First Issue in EDOCS (migrated from ST-Press DMS). 2 Added “Clip Detector Electrical Characteristics” in the Table 5 (page 6). Description of Changes TDA7294S 15/16 ...
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... TDA7294S 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 ...