
Cirrus Logic
General Description
The CS4265 is a highly integrated stereo audio CODEC. The CS4265 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 192 kHz.
D/A Features
● Multi-bit Delta Sigma modulator
● 105 dB Dynamic Range
● -95 dB THD+N
● Up to 192 kHz Sampling Rates
● Single-ended Analog Architecture
● Volume Control with Soft Ramp
– 0.5 dB Step Size
– Zero Crossing Click-free Transitions
● PopguardTM Technology
– Minimizes the effects of output transients.
● Filtered Line-level Outputs
● Selectable Serial Audio Interface Formats
– Left Justified up to 24-bit
– I2S up to 24-bit
– Right Justified 16, 18, 20 and 24-bit
● Selectable 50/15 µs De-emphasis
A/D Features
● Multi-bit Delta Sigma Modulator
● 105 dB Dynamic Range
● -95 dB THD+N
● Stereo 2:1 Input Multiplexer
● Programmable Gain Amplifier (PGA)
– +/- 12 dB gain, 0.5 dB Step Size
– Zero Crossing, Click-free Transitions
● Pseudo-differential Stereo Line Inputs
● Stereo Microphone Inputs
– +32 dB Gain Stage
– Low-noise Bias Supply
● Up to 192 kHz Sampling Rates
● Selectable Serial Audio Interface Formats
– Left Justified up to 24-bit
– I²S up to 24-bit
● High-pass Filter or DC Offset Calibration
System Features
● Synchronous IEC60958-3 Transmitter
– Up to 192 kHz Sampling Rates
– 75 Ω Drive Capability
● Serial Audio Data Input Multiplexer
● Internal Digital Loopback
● Supports Master or Slave Operation
● Mute Output Control
● Power Down Mode
– Available for A/D, D/A, CODEC, Mic
Preamplifier
● +3.3 V to +5 V Analog Power Supply
● +3.3 V to +5 V digital Power Supply
● Direct Interface with 1.8 V to 5 V Logic
Levels
● Supports I²C Control Port Interface