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MAX13302
4-Channel, Automotive Class D Audio Amplifier
Industry's Only 6V, Quad 50W, Class D Audio Amp with Exceptional THD (0.05%)
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Key Features
Applications/Uses
Simplified Block Diagram
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Key Features
- High Output Power (10% THD+N)
- 2 x 100W into 1Ω at 14.4V
- 4 x 50W into 2Ω at 14.4V
- 4 x 30W into 4Ω at 14.4V
- 2 Channels Can Be Paralleled
- Feedback After the Filter
- Improves THD+N
- Low Output Impedance
- High-Frequency Response
- Improved Damping of Complex Loads
- Enables Low-Cost Inductors
- 100dB SNR
- Low 0.04% THD+N
- 70dB PSRR
- On-Board Diagnostics
- Short-to-Battery/GND
- Open/Shorted Load
- Tweeter Detect
- Protection and Monitoring Functions:
- Short-Circuit Protection
- 50V Load-Dump Protection
- Programmable Clip Detection
- DC Offset Detection
- Open Battery/GND Tolerant
- Thermal-Overload Protection
- Thermal Warning Indication
- Four-Address I²C Control Interface
- Low-Power Shutdown Mode
- Up to 90.5% Efficiency
- -40°C to +125°C Ambient Operating Temperature
- 48-Pin TSSOP-EPR (Top Side Exposed Pad) Package
- AEC-Q100 Qualified
Applications/Uses
- Active Loudspeaker Systems
- Car Stereo
- Discrete Amplifier Modules
- Mobile Surround Systems
- Radio Head Units
- Rear-Seat Entertainment Units
Description
The MAX13300/MAX13302 combine four high-efficiency Class D amplifiers with integrated diagnostic hardware for reliable automotive audio systems. The MAX13300/ MAX13302 deliver up to 50W at 10% THD+N per channel into 2Ω when operating from a 14.4V supply.
The internal diagnostics evaluate each channel’s output impedance to check for shorts across the outputs, to the battery, or to ground. The I²C interface allows the system to query critical device parameters such as device temperature and output clipping. The devices are programmable to four different I²C addresses.
The audio amplifiers feature single-ended analog inputs with a common negative input. Three gain settings are internally adjustable through the I²C interface to 13dB, 21.6dB, and 26dB.
The Class D amplifier has 10 programmable switching frequencies between 300kHz and 750kHz.
The BTL outputs are protected against short circuits and thermal overload. The outputs can be configured as a 2-, 3-, or 4-channel amplifier. All the devices provide 50V load-dump protection, and are offered in the thermally enhanced, 48-pin TSSOP-EPR package operating over the -40°C to +125°C temperature range.
The internal diagnostics evaluate each channel’s output impedance to check for shorts across the outputs, to the battery, or to ground. The I²C interface allows the system to query critical device parameters such as device temperature and output clipping. The devices are programmable to four different I²C addresses.
The audio amplifiers feature single-ended analog inputs with a common negative input. Three gain settings are internally adjustable through the I²C interface to 13dB, 21.6dB, and 26dB.
The Class D amplifier has 10 programmable switching frequencies between 300kHz and 750kHz.
The BTL outputs are protected against short circuits and thermal overload. The outputs can be configured as a 2-, 3-, or 4-channel amplifier. All the devices provide 50V load-dump protection, and are offered in the thermally enhanced, 48-pin TSSOP-EPR package operating over the -40°C to +125°C temperature range.
Simplified Block Diagram
Technical Docs
Support & Training
Search our knowledge base for answers to your technical questions.
Filtered SearchOur dedicated team of Applications Engineers are also available to answer your technical questions. Visit our support portal .
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