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FDA2100LV：2x180 W / 1x300 W low voltage operation PWM digital input power amplifier with I2C diagnostics and step-up driver

The FDA2100LV is a new BCD technology dual bridge class D amplifier, specially intended for car radio applications.

Thanks to the BCD6-SOI (Silicon On Insulation) technology it is possible to integrate a high performance D/A converter together with powerful MOSFET output amplifier working in class D, to get outstanding efficiency with respect to the standard class AB.

The D/A conversion on board allows the performance to reach an outstanding 110 dB S/N ratio with 105 dB of dynamic range. The feedback loop includes the output L-C low-pass filter, allowing superior frequency response linearity and lower distortion independently of the inductor and capacitor quality.

A full diagnostics array communicates the status of each speaker through the I²C bus. The possibility to control the device by means of the I²C bus makes FDA2100LV very flexible.

Thanks to the solutions implemented to solve the EMI problems, the device can be used in the standard single DIN car-radio box together with the tuner.

A built-in step-up driver allows up to 150 W output power with the standard 14 V supply voltage.

The FDA2100LV is moreover compliant to the most recent OEM specifications for low voltage operation (so called 'start-stop' battery profile during engine stop), helping car manufacturers to reduce the overall emissions and thus contributing to environment protection.

Key Features

• Integrated 105 dB D/A conversion
• I2 S & TDM digital input (3.3/1.8 V)
• Input sampling frequency: 44.1kHz, 48 kHz, 96 kHz, 192 kHz
• Step-up driver included
• EMI control for FM/AM compatibility
• Dithering possibility
• Capable to operate down to 6 V (e.g."start-stop")
• 6 V - 35 V operating range (RL = 8 Ω)
• Low component count output low-pass filter
• Output low-pass filter included in the feedback
• Low radiation function (LRF)
• High output power capability
  • 2 x 80 W/4 Ω @ 25 V, 1 kHz, 10 % THD
  • 2 x 120 W/4 Ω @ 30 V, 1 kHz, 10 % THD
  • 1 x 150 W/2 Ω @ 25 V, 1 kHz, 10 % THD
• Full I2 C bus driving (3.3/1.8 V):
  • I2 C bus digital diagnostics (including DC and AC load detection); AC and DC loudspeaker diagnostic
• Very flexible fault detection through integrated diagnostic
• Protected against several kinds of misconnections
• Offset detector (play or mute mode)
• Two independent short circuit protections
• Clipping detector
• C-MOS compatible enable pin (3.3/5 V)
• ESD protection
• Package: TQFP64 exposed pad up

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