GC1809

GC1809 is a CMOS monolithic receiver and converter circuit for digital audio signals, featuring 8-to-1 input selection with support for IEC60958, S/PDIF, EIAJ CP1201, and AES3 audio interfaces. The GC1809 integrates a serial digital audio output interface, interpolation filter, multi-bit DAC, and output analog filter. The internal PLL recovers a clean clock signal from the AES3 data stream. The GC1809 is available in a QFN32 package with an operating temperature range of -40°C to +85°C.

Applications

• A/V receivers
• CD-R, DVD receivers
• Multimedia audio equipment
• Digital mixing
• Audio processors
• Set-top boxes
• Computer and automotive audio systems

Key features

• Compatible with IEC60958, S/PDIF, EIAJ CP1201, and AES3 protocols
• +3.3V analog supply (VA)
• +3.3V digital supply (VD)
• +3.3V or +5.0V digital interface supply (VL)
• 8:2 S/PDIF input multiplexer
• AES/SPDIF input selectable in hardware mode
• 3 programmable output pins (GPO)
• S/PDIF output to TX selectable in hardware mode
• 3-wire serial digital interface support
• Sample rate range: 32KHz to 192KHz
• Low-jitter clock recovery
• Channel status and user data readable via PIN by controller
• Differential input support
• On-chip status data registers
• Automatic compressed audio stream detection
• CD Q Sub-Code decoding
• OMCK system clock mode
• 24-bit DAC
• 105dB dynamic range, -90dB THD+N