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CS4245
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
A/D Features
? Multi-bit Delta Sigma Modulator
? 104 dB Dynamic Range
? -95 dB THD+N
? Stereo 6:1 Input Multiplexer
? Programmable Gain Amplifier (PGA)
– ± 12 dB Gain, 0.5 dB Step Size
– Zero Crossing, Click-Free Transitions
? Stereo Microphone Inputs
– +32 dB Gain Stage
?
Filtered Line-Level Outputs
–
Low-Noise Bias Supply
?
?
?
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
Control Output for External Muting
? 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
3.3 V to 5 V
3.3 V to 5 V
MUX
Serial
Audio
Input
I 2 C/SPI
Control Data
Interrupt
ADC Overflow
Reset
Serial
Audio
Output
Volume Interpolation
Control Filter
Volume Interpolation
Control Filter
Register Configuration
High Pass Low-Latency
Filter Anti-Alias Filter
High Pass Low-Latency
Filter Anti-Alias Filter
Multibit Switched Capacitor
??? Modulator DAC and Filter
Multibit Switched Capacitor
??? Modulator DAC and Filter
Internal Voltage
Reference
Multibit
ADC
Multibit
ADC
Oversampling PGA
Oversampling PGA
Mute
Control
MUX
+32 dB
+32 dB
Left DAC Output
Mute Control
Right DAC Output
Left Aux Output
Right Aux Output
Stereo Input 1
Stereo Input 2
Stereo Input 3
Stereo Input 4 /
Mic Input 1 & 2
Stereo Input 5
Stereo Input 6
http://www.cirrus.com
Copyright ? Cirrus Logic, Inc. 2012
(All Rights Reserved)
AUG '12
DS656F3
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