CXD2719Q
CXD2719Q is Single-Chip Dolby Pro Logic Surround Decoder manufactured by Sony Semiconductor Solutions.
Single-Chip Dolby Pro Logic Surround Decoder
Description The CXD2719Q 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. 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
- 29.5d B) 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)
- Dolby 3 Stereo
- Auto input balance control (ON/OFF)
- Noise sequencer
- Variable delay time (0 to 34.8ms)
- 7 k Hz low-pass filter (12d B/Oct)
- Modified Dolby B-type NR
- Simple SFC function
- SFC mode
- DSP bypass mode (L, R-channel through) Structure Silicon gate CMOS Applications Equipment having Dolby Pro Logic Surround function such as AV amplifiers, receivers and pact music systems 80 pin QFP...
