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TFA9881 Datasheet 3.4 W PDM input class-D audio amplifier

Manufacturer: NXP Semiconductors

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General Description

The TFA9881 is a mono, filter-free class-D audio amplifier in a 9-bump WLCSP (Wafer Level Chip-Size Package) with a 400 m pitch.

The digital input interface is an over-sampled Pulse Density Modulated (PDM) bit stream.

The TFA9881 receives audio and control settings via this interface.

Overview

TFA9881 3.4 W PDM input class-D audio amplifier Rev.

3 — 23 April 2013 Product data sheet 1.

Key Features

  • Small outline WLCSP9 package: 1.3  1.3  0.6 mm.
  • Wide supply voltage range (fully operational from 2.5 V to 5.5 V).
  • High efficiency (90 %, 4 /20 H load) and low power dissipation.
  • Quiescent power:.
  • 6.5 mW (VDDD = 1.8 V, VDDP = 3.6 V, 4 /20 H load, fclk = 2.048 MHz).
  • 7.8 mW (VDDD = 1.8 V, VDDP = 3.6 V, 4 /20 H load, fclk = 6.144 MHz).
  • Output power:.
  • 1.4 W into 4  at 3.6 V supply (THD = 1 %).
  • 2.7 W into 4  at 5.0 V supply (THD = 1 %).
  • 3.4.

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