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TDA8939
Datasheet
General description
Zero dead time Class-D 7.5 A power comparator
The TDA8939 is a power comparator designed for use in a high efficiency class-D audio power amplifier system.
It contains power switches, drive logic, protection circuitry, bias circuitry and a fully differential input stage (comparator).
This device is optimized for applications in fully digital open-loop class-D audio systems (in combination with a digital PWM controller).
The TDA8939 power comparator operates with high efficiency and low dissipation. The system operates over a wide supply voltage range from +-10 V up to +-30 V.
Features
- Zero dead time switching
- Maximum output current 7.5 A
- Standby mode
- High efficiency
- Operating voltage from +-10 V to +-30 V (symmetrical) or 20 V to 60 V (asymmetrical)
- Low quiescent current
- High output power
- Diagnostic output
- Thermal protection, current protection and voltage protection.
Applications
- Television sets
- Home-sound sets
- Multimedia systems
- All mains fed audio systems
- Car audio (boosters).
Related applications
50-60 Hz CRT integrated DTV (TV210D)
DVB-T iDTV reference solution (TV505D)
Mid-range integrated DTV (TV810)
Mainstream integrated LCD DTV reference designs TV520
LCD TV - MMS functionality
Highest-quality digital TV system TV520/8x
Design support
Support Documents
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