●General Description
●The CS44600 is a multi-channel digital-to-PWM Class D audio system controller including interpolation, sample rate conversion, half- and full-bridge PWM driver outputs, and power supply rejection feedback in a 64-pin LQFP pack age.The architecture uses a direct-to-digital approach that maintains digital signal integrity to the final output filter, minimizing analog interference effects which negatively affect system performance.
●The CS44600 integrates on-chip digital volume control, peak detect with limiter, de-emphasis, and 7 GPIO’s, allow ing easy interfacing to many commonly available power stages. The PWM amplifier can achieve greater than 90% efficiency. This efficiency provides for smaller device package, less heat sink requirements, and smaller power supplies.
●The CS44600 is ideal for audio systems requiring wide dynamic range, negligible distortion and low noise, such as A/V receivers, DVD receivers, digital speaker and automotive audio systems.
●Features
●♦ > 100 dB Dynamic Range - System Level
●♦ < 0.03% THD+N @ 1 W - System Level
●♦ 32 kHz to 192 kHz Sample Rates
●♦ Internal Oscillator Circuit Supports 24.576 MHz to 54 MHz Crystals
●♦ Integrated Sample Rate Converter (SRC)
● – Eliminates Clock Jitter Effects
● – Input Sample Rate Independent Operation
●♦ Power Supply Rejection Realtime Feedback
●♦ Spread Spectrum Modulation - Reduces EMI
●♦ PWM Popguard® for Single-Ended Mode
●♦ Eliminates AM Frequency Interference
●♦ Programmable Load Compensation Filters
●♦ Support for up to 40 kHz Audio Bandwidth
●♦ Digital Volume Control with Soft Ramp
● – +24 to -127 dB in 0.25 dB Steps
●♦ Per Channel Programmable Peak Detect and Limiter
●♦ SPI™ and I²C® Host Control Interfaces
●♦ Separate 2.5 V to 5.0 V Serial Port and Host Control Port Supplies
