Digital Amplifier Controller 64-Pin LQFP

The CS44600 pin-compatible Class-D digital audio amplifier controller provides a simple, small and cost-effective solution for DVD receivers, home theater recorders and entry-level audio/video recorders and home-theater-in-a-box systems.This multichannel digital-to-PWM (pulse width modulation) audio system controller includes interpolation, sample-rate conversion and half- and full-bridge PWM driver outputs. The architecture uses a direct-to-digital approach that maintains digital signal integrity to the final output filter, minimizing the effects of analog interference that negatively affect system performance.The 6-channel CS44600 offers technology enhancements that allow system designers to lower costs while improving audio quality. The product integrates on-chip digital volume control, peak detect with limiter and seven general-purpose I/Os that allow an easy interface to many power stages. The PWM amplifier can achieve 90 percent efficiency or more, allowing the design of smaller device packages, fewer heat-sink requirements and smaller power supplies.

• Integrated sample-rate converter
• Patented power-supply noise rejection feedback capability
• 6-channel PWM output
• 32 kHz to 192 kHz sample rates
• >100 dB dynamic range - system level
• <0.05% THD+N
• 24-bit conversion
• Single-ended or differential operation
• Popguard ® technology to minimize clicks and pops in single-ended mode
• System clock generation
• AM frequency-compatible
• Digital volume control with soft ramp
• +24 dB to -127 dB in 0.25 dB steps
• Peak detect and volume limiter with programmable attack and release rates
• SPI and I²C host control interfaces
• Separate control and serial port supplies
• 1.8 V to 5 V supply
• Glueless interface to DSPs/MPEG processors
• 2.5 V digital supply
• 3.3 V to 5 V power stage interface supply
• Package: 64-pin LQFP; lead-free assembly