Features

■ Wide-range supply voltage

– 4.5 V to 25.5 V (operating range)

– 27 V (absolute maximum rating)

■ I2C control with selectable device address

■ Embedded full IC protection

– Manufacturing short-circuit protection (out

vs. gnd, out vs. vcc, out vs. out)

– Thermal protection

– Overcurrent protection

– Undervoltage protection

■ 1 Vrms stereo analog input

■ I2S interface, sampling rate 32 kHz ~ 192 kHz,

with internal sampling frequency converter for

fixed processing frequency

■ Three output power stage configurations

– 2.0 mode, L/R full bridges

– 2.1 mode, L/R two half-bridges, subwoofer

full bridge

– 2.1 mode, L/R full bridges, PWM output for

external subwoofer amplifier

■ Driving load capabilities

– 2 x 20 W into 8 Ω ternary modulation

– 2 x 9 W into 4 Ω + 1 x 20 W into 8 Ω

■ FFXTM 100 dB dynamic range

■ Fixed output PWM frequency at any input

sampling frequency

■ Embedded RMS meter for measuring real-time

loudness

■ Two analog outputs

– Selectable headphone / line out driver with

adjustable gain via external resistors

– New F3XTM analog output

■ New fully programmable noise-gating function

■ Headphone

– Embedded negative charge pump

– Full capless output configuration

– Driving load capabilities: 40 mW into 32 Ω

■ Line out

– 2 Vrms line output capability

■ Up to 12 user-programmable biquads with

noise-shaping technology

■ Direct access to coefficients through I2C

shadowing mechanism

■ Fixed (88.2 kHz / 96 kHz) internal processing

sampling rate

■ Two independent DRCs configurable as a

dual-band anticlipper or independent

limiters/compressors (B2DRC)

■ Digital gain/att +48 dB to -80 dB with

0.125 dB/step resolution

■ Independent (fade-in, fade-out) soft volume

update with programmable rate 48 ~ 1.5 dB/ms

■ Bass/treble tones control

■ Audio presets: 15 crossover filters,

5 anticlipping modes, nighttime listening mode

■ STSpeakerSafeTM protection circuitry

– Pre- and post-processing DC blocking filters

– Checksum engine for filter coefficients

– PWM fault self-diagnosis

■ STCompressorTM dual-band DRC