TFA9887UK: 3.7 W audio system with adaptive sound maximizer and speaker protection ARCHIVED

End-user benefits

• Louder sound: the maximum possible from small speakers
• Deeper bass: reproduces lower frequencies than traditional systems
• Better quality: unmatched sound clarity with less clipping in the amplifier and less distortion from the speaker
• Longer life: prevents speaker damage with adaptive excursion control and real-time temperature protection

Key features

• Sophisticated algorithm for speaker boost protection maximizes audio performance
• Environmental awareness lets the system adapt automatically to acoustic and thermal changes
• Adaptive excursion control guarantees the speaker membrane stays within its rated limit for excursion
• Direct, real-time measurement of the voice-coil temperature ensures that the system keeps the coil within its rated limit
• Advanced clip controller prevents clipping even with a sagging supply voltage
• Optional bandwidth extension increases low-frequency response
• Dedicated speech mode with speech activity detector
• Intelligent 5.3 V DC-to-DC converter maximizes audio headroom from any supply level
• Reference output available for Acoustic Echo Cancellation (AEC) in the host processor
• High efficiency and low-power dissipation
• Maximum RMS output power:
  • 1.65 W into 8 Ω at 3.6 V power supply (THD = 1%)
  • 2.65 W into 4 Ω at 3.6 V power supply (THD = 1%)
• Wide supply voltage range (fully operational from 2.5 to 5.5 V)
• I²S digital input and output audio interface
• WLCSP29 package (3.19 x 2.07 x 0.6 mm)