CS42L52 Просмотр технического описания (PDF) - Cirrus Logic
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CS42L52 Datasheet PDF : 82 Pages
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DRAFTv1
5/13/08
CS42L52
Low-power, Stereo CODEC w/ Headphone & Speaker Amps
Stereo CODEC
High Performance Stereo ADC & DAC
– 99 dB (ADC), 98 dB (DAC) Dyn. Range (A-wtd)
– -88 dB THD+N
Flexible Stereo Analog Input Architecture
– 4:1 Analog Input MUX
– Analog Input Mixing
– Analog Passthrough with Volume Control
– Analog Programmable Gain Amplifier (PGA)
Programmable Automatic Level Control (ALC)
– Noise Gate for Noise Suppression
– Programmable Threshold & Attack/Release
Rates
Dual MIC Inputs
– Differential or Single-ended
– +16 dB to +32 dB w/ 1dB step MIC Pre-
Amplifiers
– Programmable, Low-noise MIC Bias Levels
Digital Signal Processing Engine
– Bass & Treble Tone Control, De-emphasis
– Master Vol. and Independent PCM SDIN + ADC
SDOUT Mix Volume Control
– Soft-ramp & Zero-Cross Transitions
– Programmable Peak-detect and Limiter
– Beep Generator w/Full Tone Control
Class D Stereo/Mono Speaker Amplifier
No External Filter Required
High-power Stereo Output at 10% THD+N
– 2 x 1.00 W into 8 Ω @ 5.0 V
– 2 x 550 mW into 8 Ω @ 3.7 V
– 2 x 230 mW into 8 Ω @ 2.5 V
High-power Mono Output at 10% THD+N
– 1 x 1.90 W into 4 Ω @ 5.0 V
– 1 x 1.00 W into 4 Ω @ 3.7 V
– 1 x 350 mW into 4 Ω @ 2.5 V
Direct Battery-powered Operation
– Battery Level Monitoring & Compensation
81% Efficiency at 800 mW
Phase-aligned PWM Output Reduces Idle
Channel Current
Spread Spectrum Modulation
Low Quiescent Current
Stereo Headphone Amplifier
Ground-centered Outputs
– No DC-Blocking Capacitors Required
– Integrated Negative Voltage Regulator
High-power Output at -75 dB THD+N
– 2 x 23 mW Into 16 Ω @ 1.8 V
– 2 x 44 mW Into 16 Ω @ 2.5 V
(Features continued on page 2)
Left
1
2
Inputs
3
4
Right
1
2
Inputs
3
4
+1.65 V to +2.63 V
Analog Supply
Summing
Programmable
Gain Amps
Σ
Multi-bit
∆Σ ADC
Σ
+16 to +32 dB Diff./
S.E. MIC Pre-Amps
MIC Bias
+1.65 V to +2.63 V
Digital Supply
+1.60 V to +5.25 V
Battery
Battery Level Monitoring & Compensation
Pulse-Width
Modulator
ALC
(PWM)
Beep
Volume, Mono
Swap, Mix
Mono mix,
Limiter, Bass,
Treble Adjust
HPF
ALC
Multi-bit
∆Σ DAC
Control Port
Serial Audio Port
Level Shifter
+ Stereo/Mono
- Full-Bridge
+
-
Speaker
Outputs
Class D Amps
Left HP/Line
Output
Ground-Centered
Amps
-VHP
+VHP
Charge Pump
Right HP/Line
Output
Speaker/HP
Switch
+1.65 V to +2.63 V
Headphone Supply
Selectable
Bias Voltage
+1.65 V to +3.47 V
Interface Supply
I2C Control
Reset
Serial Audio
Input/Output
+1.65 V to +2.63 V
Analog Supply
http://www.cirrus.com
Copyright © Cirrus Logic, Inc. 2008
(All Rights Reserved)
MAY '08
DS680F1
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