TDA7376B
15Pages

Catalog excerpts

TDA7376B 2 x 35 W Power amplifier for car radio Datasheet - production data  Protections: – short circuit (out to ground, out to supply voltage, across the load) – overrating chip temperature with soft thermal limiter – load dump voltage – fortuitous open ground – loudspeaker dc current – ESD Description The TDA7376B is a new technology dual bridge audio amplifier in Multiwatt 15 package designed for car radio applications. Thanks to the fully complementary PNP/NPN output stage configuration the TDA7376B delivers a rail-to-rail voltage swing with no need of bootstrap capacitors. Features  High output power capability: – 2 x 40 W max./ 4  – 2 x 35 W/4  EIAJ – 2 x 25 W/4  (14.4 V, 1 kHz, 10 %) – 2 x 25 W/ 2 (14.4 V, 1 kHz, 10 %) Differential input pairs, that will accept either single ended or differential input signals, guarantee high noise immunity making the device suitable for both car radio and car boosters applications.  2  driving  Differential inputs  Minimum external components count  Internally fixed gain (26 db)  Mute function (cmos compatible)  Automute at minimum supply voltage detection  Standby function  No audible pop during mute and standby operations  Clipping detector with programmable distortion threshold The audio mute control, that attenuates the output signal of the audio amplifiers, suppresses pop On - Off transients and cuts any noises coming from previous stages. The standby control, that de-biases the amplifiers, reduces the cost of the power switch. The on-board programmable distortion detector allows compression facility whenever the amplifier is over driven, so limiting the distortion at any levels inside the presettable range. Table 1. Device summary Order code September 2013 This is information on a product in f

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Block and pin connection diagrams . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5 1.1 Test and application circuits . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7 Absolute maximum ratings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9 Electrical characteristics curves . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .11

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List of tables Table 1. Table 2. Table 3. Table 4. Table 5. Device summary . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1 Absolute maximum ratings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9 Thermal data. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9 Electrical characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9 Document...

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List of figures Figure 1. Figure 2. Figure 3. Figure 4. Figure 5. Figure 6. Figure 7. Figure 8. Figure 9. Figure 10. Figure 11. Figure 12. Figure 13. Figure 14. Figure 15. Figure 16. Figure 17. Figure 18. Figure 19. Block diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5 Pin connection diagram (top view) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6 Differential inputs test and application circuit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ....

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Block and pin connection diagrams Block and pin connection diagrams Block diagram Figure 1. Block diagram

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Block and pin connection diagrams Pin connection Figure 2. Pin connection diagram (top view)

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Test and application circuits Test and application circuits Figure 3. Differential inputs test and application circuit Figure 4. Single ended inputs test and application circuit

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Test and application circuits TDA7376B Figure 5. Application board reference circuit Figure 6. Printed circuit board and components layout of the circuit of figure 5

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Electrical specifications Electrical specifications Absolute maximum ratings Table 2. Absolute maximum ratings Symbol Power Dissipation Tcase = 85 °C Output Peak Current (repetitive f > 10 Hz) Output Peak Current (not repetitive t = 100 s) Peak supply voltage (t = 50 ms) Operating supply voltage Operative ambient temperature range 1. A suitable heatsink/dissipation system should be used to keep Tj inside specified limits. Thermal data Table 3. Thermal data Symbol Thermal Resistance Junction to case Electrical characteristics Refer to the test circuits figures 3 and 4, VS = 14.4 V; RL = 4...

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Electrical specifications TDA7376B Table 4. Electrical characteristics (continued) Test condition Cross talk Input Impedance differential input Single Ended input Voltage gain differential input Single Ended input Channel gain balance Input Noise Voltage Supply Voltage Rejection Power bandwidth Common mode rejection ratio VCM = 1 Vrms input referred Standby Attenuation Standby current consumption Mute attenuation Distortion detection level(2) Output low, sinked current Distortion detector output dc current Output high, leakage current (Vpin10 = VS, @ VSmax = 18V) 1. Saturated square wave...

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Electrical specifications Electrical characteristics curves Figure 7. Clip detector threshold vs. THD set. voltage Figure 8. Quiescent current vs. supply voltage Figure 9. Output power vs. supply voltage Figure 10. Output power vs. supply voltage Figure 11. EIAJ power vs. supply voltage

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Electrical specifications Figure 13. THD vs. output power (RL = 4 ) Figure 14. THD vs. output power (RL = 2 ) Figure 15. Dissipated power & efficiency vs. output power Figure 17. CMRR vs. frequency Figure 18. Crosstalk vs. frequency

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Package information Package information In order to meet environmental requirements, ST offers these devices in different grades of ECOPACK® packages, depending on their level of environmental compliance. ECOPACK® specifications, grade definitions and product status are available at: www.st.com. ECOPACK® is an ST trademark Figure 19. Multiwatt15 (vertical) mechanical data and package dimensions

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