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TDA7801：Digital input (I2S), quad BTL output power amplifier with full I2C diagnostics

The TDA7801 is a new BCD technology quad bridge amplifier for car audio applications.

Thanks to the BCD6 technology it is possible to integrate a high performance D/A converter together with powerful MOSFET outputs.

The possibility of having the D/A conversion on board allows the performance to reach an outstanding 115 dB S/N ratio with more than 105 dB of dynamic range.

This device is equipped with a full diagnostics array that communicates the status of each speaker through the I²C bus. The possibility to control the configuration and behavior of the device by means of the I²C bus makes TDA7801 a very flexible machine.

Key Features

• Integrated 110 dB D/A conversion
• I2 S digital input (3.3/1.8 V) with TDM option
• Selectable input sampling frequency: 44.1 kHz, 48 kHz, 96 kHz, 192 kHz
• MOSFET power outputs
• High output power capability 4x28 W/ 4 Ω @ 14.4 V, 1 kHz, 10 % THD
• Max. output power 4x72 W/2 Ω
• Full I2 C bus driving (3.3/5 V):
  • Independent front/rear soft play/ mute
  • Selectable gain (four levels) for very low noise line-out function
  • I2 C bus digital diagnostics (including DC and AC load detection)
• Two I2 C bus addresses and 8-ch TDM mode (only in PowerSO package)
• Optional non I2 C bus mode
• Offset detector (play or mute mode)
• Clipping detector (selectable level) and diagnostics pin
• CMOS compatible enable pin (3.3/5 V)
• Full fault protection
• Four independent short circuit protections
• Linear thermal protection (four thermal warnings)
• ESD protection

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