TFA9879HN/N1,157

The TFA9879 contains a processor that supports a range of sound processing features including a 5-band parametric equalizer, separate bass and treble control, a dynamic range compressor, soft clip control and volume control. Excellent audio performance combined with high Power Supply Rejection Ratio (PSRR) is achieved through the use of a closed loop configuration. Two independent digital audio inputs (I²S-bus / PCM / IOM2) are available for connecting both a baseband and a multimedia processor. The TFA9879 is available in a HVQFN24 package.

3.1 General features

• Closed loop amplifier for:
  • High power supply rejection ratio
  • Excellent audio performance
• Digital input for high RF immunity
• High efficiency for maximizing battery life
• Wide supply voltage range (fully operational from 2.5 V to 5.5 V)
• Delivers high output power into 4 O and 8 O load impedances
• Phase-Locked Loop (PLL); no system clock required
• Protection including diagnostics via I²C-bus:
  • OverCurrent Protection (OCP) to protect against short circuits across the speaker, to the supply line or to ground
  • OverTemperature Protection (OTP)
  • Digital inputs protected with UnderFrequency Protection (UFP), OverFrequency Protection (OFP) and Invalid Bit-clock Protection (IBP)
• ‘Pop noise’ free at power-up/power down, during sample rate switching and when switching between digital inputs
• Four separate I²C addresses for multi-channel appl