Description
The CS4398 is a complete stereo 24 bit/192 kHz digital-to-analog system. This D/A system includes digital deemphasis, half dB step size volume control, ATAPI
channel mixing, selectable fast and slow digital interpolation filters followed by an oversampled multi-bit delta-sigma modulator that includes mismatch shaping technology that eliminates distortion due to capacitor
mismatch. Following this stage is a multi-element
switched capacitor stage and low pass filter with differential analog outputs.
The CS4398 also has an proprietary DSD processor that allows for volume control and 50 kHz on-chip filtering without an intermediate decimation stage. It also offers an optional path for direct DSD conversion by directly using the multi-element switched capacitor array.
The CS4398 accepts PCM data at sample rates from 32 kHz to 216 kHz, DSD audio data, has selectable digital filters, consumes little power, and delivers excellent sound quality.

Features
◆ Advanced Multi-bit Delta-Sigma Architecture
   – 120 dB Dynamic Range
   – -107 dB THD+N
   – Low Clock Jitter Sensitivity
   – Differential Analog Outputs
◆ PCM input
   – 102 dB of Stopband Attenuation
   – Supports Sample Rates up to 192 kHz
   – Accepts up to 24 bit Audio Data
   – Supports All Industry Standard Audio
      Interface Formats
   – Selectable Digital Filter Response
   – Volume Control with 1/2 dB Step Size and
      Soft Ramp
   – Flexible Channel Routing and Mixing
   – Selectable De-Emphasis
◆ Supports Stand-Alone or I²C/SPI™ Configuration
   Embedded Level Translators
   – 1.8 V to 5 V Serial Audio Input
   – 1.8 V to 5 V Control Data Input
◆ Direct Stream Digital (DSD)
   – Dedicated DSD Input Pins
   – On-Chip 50 kHz Filter to Meet Scarlet Book
      SACD Recommendations
   – Matched PCM and DSD Analog Output
      Levels
   – Non-Decimating Volume Control with
      1/2 dB Step Size and Soft Ramp
   – DSD Mute Detection
   – Supports Phase-Modulated Inputs
   – Optional Direct DSD Path to On-Chip
      Switched Capacitor Filter
◆ Control Output for External Muting
   – Independent Left and Right Mute Controls
   – Supports Auto Detection of Mute Output
      Polarity
◆ Typical Applications
   – DVD Players
   – SACD Players
   – A/V Receivers
   – Professional Audio Products (Continue ...)