ST TDA7297 15+15W Dual Bridge Amplifier Data Sheet User Manual

Summary

The TDA7297 is a robust dual bridge amplifier specialized for integration into TV and portable radio applications. This technical manual provides comprehensive insights into the device's operation, detailing full electrical specifications, wide supply voltage range (6V–18V), and built-in protections including thermal overload and short circuit safeguards. It guides users through optimal implementation circuits—such as methods to prevent speaker "pop" and "click" noise during power cycles—making it an essential technical resource for embedded developers designing reliable, high-performance audio equipment.

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TDA7297

15+15W DUAL BRIDGE AMPLIFIER

WIDE SUPPLY VOLTAGE RANGE (6V -18V)

TECHNOLOGY BI20II

MINIMUM EXTERNAL COMPONENTS – NO SVR CAPACITOR – NO BOOTSTRAP – NO BOUCHEROT CELLS – INTERNALLY FIXED GAIN STAND-BY & MUTE FUNCTIONS SHORT CIRCUIT PROTECTION THERMAL OVERLOAD PROTECTION

Multiwatt 15

DESCRIPTION ORDERING NUMBER: TDA7297

The TDA7297 is a dual bridge amplifier specially designed for TV and Portable Radio applications.

BLOCK AND APPLICATION DIAGRAM

IN1 OUT1+

ST-BY

S-GND

OUT1-

IN2 OUT2+

OUT2-

PW-GND

D94AU175B

September 2003 1/9

Page Summary Contents For ST TDA7297 15+15W Dual Bridge Amplifier Data Sheet User Manual

Page 1 TDA7297 15+15W DUAL BRIDGE AMPLIFIER WIDE SUPPLY VOLTAGE RANGE (6V -18V) TECHNOLOGY BI20II MINIMUM EXTERNAL COMPONENTS – NO SVR CAPACITOR – NO BOOTSTRAP – NO BOUCHEROT CELLS – INTERNALLY FIXED GAIN ST...

Page 2 TDA7297 ABSOLUTE MAXIMUM RATINGS Symbol Parameter Value Unit VS Supply Voltage IO Output Peak Current (internally limited) Ptot Total Power Dissipation (Tcase = 70°C) Operating Temperature 0 to 70 °C ...

Page 3 TDA7297 ELECTRICAL CHARACTERISTICS (Continued) Symbol Parameter Test Condition Min. Typ. Max. Unit VTMUTE Mute Threshold VO = -30d B 2.3 2.9 4.1 VTST-BY St-by Threshold 0.8 1.3 1.8 IST-BY ST-BY curren...

Page 4 TDA7297 Figure 2: Microprocessor Driving Signals. +VS(V) VIN (m V) VST-BY pin 7 1.8 VMUTE pin 6 Iq (m A) VOUT (V) PLAY MUTE ST-BY OFF ST-BY D96AU259 external voltage divider. (B) Low Cost Application ...

Page 5 TDA7297 Figure 3: Stand-alone Low-cost Application. R1 IN1 OUT1+ ST-BY S-GND OUT1- OUT2+ OUT2- PW-GND D95AU260A Figure 3b: PCB and Component Layout of the Application Circuit (Fig. 1).

Page 6 TDA7297 Figure 4: Distortion vs Output Power Figure 5: Distortion vs Output Power THD(%) THD(%) Vcc = 12 V Vcc = 16.5V Rl = 8 ohm Rl = 8 ohm f = 15KHz f = 15KHz f = 5KHz f = 5KHz f = 1KHz f = 1KHz Pou...

Page 7 TDA7297 Figure 10: Mute Attenuation vs. V pin.6 Figure 11: Stand-By Attenuation vs Vpin.7 Attenuation (d B) Attenuation (d B) Vpin.6(V) Vpin.7 (V) Figure 12: Quiscent Current vs. Supply Voltage Iq (m ...

Page 8 TDA7297 mm inch OUTLINE AND MIN. TYP. MAX. MIN. TYP. MAX. MECHANICAL DATA 0.49 0.55 0.019 0.022 0.66 0.75 0.026 0.030 1.02 1.27 1.52 0.040 0.050 0.060 G1 17.53 17.78 18.03 0.690 0.700 0.710 H1 19.6 0....

Page 9 TDA7297 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...

Manual Details

Brand	Dual
Pages	9
File Size	174.22 KB
Published	June 03, 2026

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Frequently Asked Questions

Is the TDA7297 suitable for applications requiring complex microprocessor control?

Yes, microprocessor applications can use specific signaling sequences to manage St-by and mute signals effectively.