The AD1819B is an analog front end for high performance PC audio, modem, or DSP applications. The AC’97 architecture defines a 2-chip audio solution comprising a digital audio controller, plus a high quality analog component that includes Digital-to-Analog Converters (DACs), Analog-to-Digital Converters (ADCs) mixer and I/O.
The main architectural features of the AD1819B are the high quality analog mixer section, two channels of Σ∆ ADC conversion, two channels of Σ∆ DAC conversion and Data Direct Scrambling (D2S) rate generators. The AD1819B’s left channel ADC and DAC are compatible for modem applications supporting irrational sample rates and modem filtering requirements.
AC’97 FEATURES
Fully Compliant AC’97 Analog I/O Component
48-Terminal LQFP Package
Multibit SD Converter Architecture for Improved S/N Ratio >90 dB
16-Bit Stereo Full-Duplex Codec
Four Analog Line-Level Stereo Inputs for Connection from LINE, CD, VIDEO, and AUX
Two Analog Line-Level Mono Inputs for Speakerphone and PC BEEP
Mono MIC Input Switchable from Two External Sources
High Quality CD Input with Ground Sense
Stereo Line Level Output
Mono Output for Speakerphone
Power Management Support
ENHANCED FEATURES
Support for Multiple Codec Communications
DSP 16-Bit Serial Port Format
Variable 7 kHz to 48 kHz Sampling Rate with 1 Hz Resolution
