2.1 channel high-efficiency digital audio system

Features
 Wide supply voltage range (10 V - 36 V)
 Three power output configurations
– 2 x 10 W + 1 x 20 W
– 2 x 20 W
– 1 x 40 W
 Thermal protection
 Under-voltage protection
 Short-circuit protection
 PowerSO-36 slug down package
 2.1 channels of 24-bit DDX®
 100-dB SNR and dynamic range
 32 kHz to 192 kHz input sample rates
 Digital gain/attenuation +48 dB to -80 dB in
0.5-dB steps
 Four 28-bit user programmable biquads (EQ)
per channel
 I²C control
 2-channel I²S input data interface
 Individual channel and master gain/attenuation
 Individual channel and master soft and hard
mute
 Individual channel volume and EQ bypass
 DDX® POP free operation
 Bass/treble tone control
 Dual independent programmable
limiters/compressors
 AutoModes™ settings for:
– 32 preset EQ curves
– 15 preset crossover settings
– Auto volume controlled loudness
– 3 preset volume curves
– 2 preset anti-clipping modes
– Preset night-time listening mode
– Preset TV AGC
 Input and output channel mapping
 AM noise-reduction and PWM frequency
shifting modes
 Soft volume update and muting
 Auto zero detect and invalid input detect
muting selectable DDX® ternary or binary
PWM output plus variable PWM speeds
 Selectable de-emphasis
 Post-EQ user programmable mix with default
2.1 bass-management settings
 Variable max power correction for lower
full-power THD
 Four output routing configurations
 Selectable clock input ratio
 96 kHz internal processing sample rate, 24 to
28-bit precision
 Video application supports 576 * fs input mode

Circuit Diagram

2.1 channel high-efficiency digital audio system