Document
CS4265
104 dB, 24-Bit, 192 kHz Stereo Audio CODEC
D/A Features
Multi-Bit Delta Sigma Modulator
104 dB Dynamic Range
-90 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
Popguard® 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
104 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
1.8 V to 5 V
Serial Audio Input Serial Audio Output
I2C Control Data
Reset
Level Translator
Level Translator
Register Configuration PCM Serial Interface / Loopback
3.3 V to 5 V
3.3 V to 5 V
Volume Control
Interpolation Filter
Multibit Modulator
Volume Control
Interpolation Filter
Multibit Modulator
Switched Capacitor DAC and Filter
Switched Capacitor DAC and Filter
Mute Control
Left DAC Output Mute Control Right DAC Output
IEC60958-3 Transmitter
High Pass Filter
Low-Latency Anti-Alias Filter
High Pass Filter
Low-Latency Anti-Alias Filter
Internal Voltage Reference
Mic Bias
Multibit Oversampling
ADC Multibit Oversampling
ADC
PGA PGA
MUX
+32 dB +32 dB
Transmitter Output Microphone Bias
Mic Input 1&2 Stereo Line Input
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Copyright Cirrus Logic, Inc. 2012—2018 (All Rights Reserved)
DEC ’18 DS657F4
System Features
Synchronous IEC60958-3 Transmitter – Up to 192 kHz Sampling Rates – 75 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
General Description
CS4265
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.
A 2:1 stereo input multiplexer is included for selecting between line-level or microphone-level inputs. The microphone input path includes a +32 dB gain stage and a low noise bias voltage supply. The PGA is available for line or microphone inputs and provides gain or attenuation of 12 dB in 0.5 dB steps.
The output of the PGA is followed by an advanced 5thorder, multi-bit delta sigma modulator and digital filtering/decimation. Sampled data is transmitted by the serial audio interface at rates from 4 kHz to 192 kHz in either Slave or Master Mode.
The D/A converter is based on a 4th-order multi-bit delta sigma modulator with an ultra-linear low-pass filter and offers a volume control that operates with a 0.5 dB step size. It incorporates selectable soft ramp and zero crossing transition functions to eliminate clicks and pops.
Standard 50/15 s de-emphasis is available for a 44.1 kHz sample rate for compatibility with digital audio programs mastered using the 50/15 s pre-emphasis technique.
Integrated level translators allow easy interfacing between the CS4265 and other devices operating over a wide range of logic levels.
The CS4265 is available in a 32-pin QFN package for both Commercial (-10° to +70° C) and Automotive (-40° to +105° C) grade. The CDB4265 is also available for device evaluation and implementation suggestions. Please refer to “Ordering Information” on page 56 for complete details.
2 DS657F4
CS4265
TABLE OF CONTENTS
1. PIN DESCRIPTIONS .......................................................................................................................... 7 2. CHARACTERISTICS AND SPECIFICATIONS ...................................................................................... 9
SPECIFIED OPERATING CONDITIONS ............................................................................................. 9 ABSOLUTE MAXIMUM RATINGS ....................................................................................................... 9 DAC ANALOG CHARACTERISTICS ................................................................................................. 10 DAC COMBINED INTERPOLATION & ON-CHIP ANALOG FILTER RESPONSE ............................ 11 ADC ANALOG CHARACTERISTICS ....