DESCRIPTION

· The Si2704/05/06/07 is an EMI mitigating 2.1 digital audio processing Class D amplifier, integrating a power stage, PWM DAC, and digital audio processing for simplified, low-cost, power-efficient system designs in consumer audio electronics.

FEATURES

· Digital input Delta-Sigma PWM with patent-pending EMI mitigation technology.

· AM radio band noise-free notch and GSM/iPhone compatibility.

· Wideband PWM carrier spreading and power stage slew rate control.

· Power stage feedback for PSR/THD, achieving 88% efficiency with >50 dB PSRR.

· 95 dB dynamic range and <0.1% THD, with stereo PWM DAC line analog outputs.

· Master/slave I2S with 3 inputs & 1 output, and automatic digital audio rate detection.

· Standard audio rates from 32–192 kHz, with audio activity detector and auto-standby.

· Operates from external XTAL or clock, with buffered master/regulator clock output.

· Programmable 7-band parametric EQ, dynamic range compressor, and tone control.

· Crossbar input mixer with scaling, digital tone and alert generation.

· 128 dB volume control in 0.5 dB steps, multiple low power operating modes.

· Over-current and over-temperature detection with auto recovery.

· Pop and click free operation, standard 2-wire control with 2 addresses.

· System flexibility with 3 multi-function pins, dual supply voltage: 2.7–3.6 V main and 4.0–6.6 V power stage.

· Available in 4x4 24-pin Power QFN and 7x7 48-pin Power eTQFP packages, both Pb-free/RoHS compliant.

APPLICATIONS

· PMP/MP3 docking stations and portable consumer audio electronics.

· Table top and portable radios, active/wireless speakers.

· TVs and monitors, TV sound bars.