●General Description
●The CS4270 is a high-performance, integrated audio CODEC. The CS4270 performs stereo analog-to-digital (A/D) and digital-to-analog (D/A) conversion of up to 24-bit serial values at sample rates up to 216 kHz. Standard 50/15 µs de-emphasis is available for sampling rates of 44.1 kHz for compatibility with digital audio programs mastered using the 50/15 µs pre-emphasis technique.
●Integrated level translators allow easy interfacing be tween the CS4270 and other devices operating over a wide range of logic levels.
●Independently addressable high-pass filters are available for the right and left channel of the A/D. This allows the A/D to be used in a wide variety of applications where one audio channel and one DC measurement channel is desired.
●D/A Features
●♦ High Performance
● – 105 dB Dynamic Range
● – -95 dB THD+N
●♦ Selectable Serial Audio Interface Formats
● – Left-Justified up to 24-bit
● – I²S up to 24-bit
● – Right-Justified 16-, and 24-Bit
●♦ Control Output for External Muting
●♦ On-Chip Digital De-Emphasis
●♦ Popguard® Technology
●♦ Multi-bit ∆Σ Conversion
●♦ Digital Volume Control
●♦ Single-Ended Output
●A/D Features
●♦ High Performance
● – 105 dB Dynamic Range
● – -95 dB THD+N
●♦ Multi-bit ∆Σ Conversion
●♦ High-Pass Filter to Remove DC Offsets
●♦ Selectable Serial Audio Interface Formats
● – Left-Justified up to 24-bit
● – I²S up to 24-bit
●♦ Single-Ended Input
●System Features
●♦ Direct Interface with Logic Levels 1.8 V to 5 V
●♦ Internal Digital Loopback
●♦ Stand-Alone or Control Port Functionality
●♦ Single-Ended Analog Architecture
●♦ Supports all Audio Sample Rates from 4 kHz to 216 kHz
●♦ 3.3 V or 5 V Core Supply
●Stand-Alone Mode Feature Set
●♦ System Features
● – Serial Audio Port Master or Slave Operation
● – Single-, Double-, or Quad-Speed Operation
●♦ D/A Features
● – Auto-Mute on Static Samples
● – 44.1 kHz 50/15 µs De-emphasis Available
● – Selectable Serial Audio Interface Formats
● • Left-Justified up to 24-bit
● • I²S up to 24-bit
●♦ A/D Features
● – High-Pass Filter
● – Selectable Serial Audio Interface Formats
● • Left-Justified up to 24-bit
● • I²S up to 24-bit
●Software Mode Feature Set
●♦ System Features
● – Serial Audio Port Master or Slave Operation
● – Internal Digital Loopback Available
●♦ D/A Features
● – Selectable Auto-mute
● – 44.1-kHz De-emphasis Filters
● – Configurable Muting Controls
● – Volume Control
● – Selectable Serial Audio Interface Formats
● • Left-Justified up to 24-bit
● • I²S up to 24-bit
● • Right-Justified 16, and 24-bit
●♦ A/D Features
● – Selectable High-Pass Filter or DC Offset Calibration
● – Selectable Serial Audio Interface Formats
● • Left-Justified up to 24-bit
● • I²S up to 24-bit
