AD1803
Key Features
- The AD1803 can also be used as a stand-alone codec for voice/handset/telephony applications, or as a cellular telephone interface
- The AD1803 codec uses high-performance sigma-delta ADC and DACs with programmable gain/attenuation
- It has a digital monitor output with selectable mix from ADC and DAC channels for call progress monitoring
- The AD1803 supports ring validation and wake-up interrupt output signalling
- The AD1804 is a solid-state line-side analog phone interface device that replaces a conventional discrete DAA
- The AD1804 eliminates the need for transformer, relays, opto-isolators and a 2-to-4-wire hybrid
- The AD1804 uses high-performance sigmadelta ADC and DACs with programmable gain/attenuation
- It has digitally selectable line termination impedances
- The AD1804 hybrid provides 2-to-4-wire conversion, local echo cancellation and correctly terminates the transmission line
- The AD1803/AD1804 supports several advanced power management features with several power-saving modes
