CXD2724AQ-1 Overview
The CXD2724AQ-1 is a CMOS LSI developed for Dolby Pro Logic Surround. A SRAM for short delay and AD/DA converters are built in, and all functions necessary for Dolby Pro Logic Surround such as an adaptive matrix, a passive decoder including BNR, auto input balance, a noise sequencer and center channel mode control are contained on a single chip. Further, this LSI also supports Dolby 3 Stereo and Virtual Dolby...
CXD2724AQ-1 Key Features
- Dolby Pro Logic Surround decoding with a single chip
- 2-channel 1-bit AD converter, decimation filter and prefilter operational amplifier
- 4-channel 1-bit DA converter, oversampling filter and post filter
- Analog switch for DSP bypass
- Analog electronic attenuator (+1.5 to -29.5dB) for center/surround channel trim
- 24K-bit SRAM for short delay
- No separation or other variance for digital processing
- External parts reduced by incorporating analog circuits Functions
- Adaptive matrix
- Center channel mode control (Normal/Phantom/Wide)