TDA7381 STMicroelectronics, TDA7381 Datasheet
TDA7381
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TDA7381 Summary of contents
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... Fortuitous open GND ■ Reversed battery ■ ESD protection Description The TDA7381 is a class AB audio power amplifier in Flexiwatt25 package designed for car radio applications. Thanks to the fully complementary PNP/NPN output configuration the TDA7381 allows a rail to rail output voltage swing with no need of bootstrap capacitors.. ...
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... Thermal data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4 2.3 Electrical characteristcs . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4 2.4 Printed circuit board and component layout . . . . . . . . . . . . . . . . . . . . . . . . 6 3 Application hints . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7 3.1 Biasing and SVR . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7 3.2 Input stage . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7 3.3 Stand-by and muting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7 3.4 Diagnostics facility . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8 3.5 Stability and layout considerations . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10 4 Package information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11 5 Revision history . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12 2/13 TDA7381 ...
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... TDA7381 1 Block / application diagram and pins connection diagram Figure 1. Block and application diagram ST-BY MUTE IN1 0.1μF IN2 0.1μF IN3 0.1μF IN4 0.1μF AC-GND 0.1μF Figure 2. Pins connection diagram (top view) Block / application diagram and pins connection diagram ...
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... Ω amb Test Condition THD = 10 % THD = 1 % THD = 13 THD = 13 (1) EIAJ ( Value 150 -40 to 150 Value max °C; Refer to the test and application Min. Typ. Max. 180 300 100 16 13 0.04 0.3 TDA7381 Unit °C °C Unit °C/W Unit ...
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... TDA7381 Table 4. Electrical characteristcs (continued 14 kHz circuit (Figure 3), unless otherwise specified). Symbol Parameter e Output noise No SVR Supply voltage rejection f Low cut-off frequency cl f High cut-off frequency ch R Input impedance i C Cross talk T I St-by current consumption SB V St-by out threshold voltage ...
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... Electrical specifications 2.4 Printed circuit board and component layout Figure 4. Components and top copper layer of the Figure 5. Bottom copper layer of the 6/13 Figure 3 Figure 3 TDA7381 ...
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... V threshold voltage and the device will consequently fail to turn OFF when the mute line is brought down. About the stand-by, the time constant to be assigned in order to obtain a virtually pop-free transition has to be slower than 2.5 V/ms. 3, all the TDA7381’s main sections, such as Inputs, Outputs and AC ...
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... Application hints 3.4 Diagnostics facility The TDA7381 is equipped with a diagnostics circuitry able to detect the following events: ● Clipping in the output stage ● Overheating (thermal shut-down proximity) ● Output misconnections (OUT-GND and OUT-Vs shorts) Diagnostics information is available across an open collector output located at pin 25 (fig. 8) through a current sinking whenever at least one of the above events is recognized ...
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... TDA7381 Figure 8. Clipping detection waveforms. In other words, this feature offers the means to counteract the extremely sound-damaging effects of clipping, caused by a sudden increase of odd order harmonics and appearance of serious intermodulation phenomena. Another possible kind of distortion control could be the setting of a maximum allowable THD limit (e.g. 0.5%) over the entire audio frequency range. ...
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... Application hints 3.5 Stability and layout considerations If properly layouted and hooked to standard carradio speakers, the TDA7381 will be intrinsically stable with no need of external compensations such as output R-C cells. Due to the high number of channels involved, this translates into a very remarkable components saving if compared to similar devices on the market. ...
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... TDA7381 4 Package information In order to meet environmental requirements, ST (also) offers these devices in ECOPACK packages. ECOPACK is marked on the package and on the inner box label, in compliance with JEDEC Standard JESD97. The maximum ratings related to soldering conditions are also marked on the inner box label. ECOPACK trademark. ECOPACK specifications are available at: www.st.com. ...
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... Revision history 5 Revision history Table 5. Document revision history Date 12-Oct-1999 27-Jun-2008 12/13 Revision 5 Initial release. Document reformatted. Document promoted from preliminary data to datasheet. 6 Added Table 1: Device Added ECOPACK description in Changes summary. Section 4: Package information. TDA7381 ...
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... TDA7381 Information in this document is provided solely in connection with ST products. STMicroelectronics NV and its subsidiaries (“ST”) reserve the right to make changes, corrections, modifications or improvements, to this document, and the products and services described herein at any time, without notice. All ST products are sold pursuant to ST’s terms and conditions of sale. ...