DESCRIPTION

The WM8608 comprises a high performance multi-channel PWM digital power amplifier controller. Simply by adding appropriate power output stages a multi-channel power amplifier may be built. Six identical full audio bandwidth channels, plus a reduced bandwidth sub channel are provided as PWM outputs, to drive 6 speakers plus Sub.

FEATURES

• Multi-channel PWM audio amplifier controller

• Supports Stereo, 5.1, 6.1 or 7.1 inputs

• Supports 2.1, 5.1 or 6.1 outputs with optional rear centre channel generation

• PWM Audio Performance with typical output stage

− 100dB SNR (‘A’ weighted @ 48kHz)

− 0.01 THD @ 1Watt

− 0.1 THD @ 30Watt

• Integrated Bass Management support with adjustable filter

• Integrated 4-band Graphic Equaliser for 3 front channels

• Adjustable output stage filter compensation for different speakers

• Volume control on each 6.1 channel +24dB to -103.5dB in 0.5dB steps, with volume ramping and auto-mute functions

• Programmable Dynamic Peak Compressor avoids clipping even at high volume settings

• Internal PLL and optional crystal oscillator, supporting Audio and MPEG standards

• 2/3-Wire MPU Serial Control Interface

• Master or Slave Clocking Mode

• Programmable Audio Data Interface Modes

− I2S, Left, Right Justified or DSP

− 16/20/24/32 bit Word Lengths

• De-emphasis support for stereo

• Selectable CMOS or LVDS digital outputs

APPLICATIONS

• Surround Sound AV Processors and Hi-Fi systems

• Automotive Audio

• DVD receivers