參數(shù)資料
型號(hào)： CRD42L51
廠商： Cirrus Logic, Inc.
元件分類： Codec
英文描述： Low Power, Stereo CODEC with Headphone Amp
中文描述： 低功耗，立體聲耳機(jī)放大器編解碼器
文件頁數(shù)： 1/83頁
文件大小： 1348K
代理商： CRD42L51
Copyright
Cirrus Logic, Inc. 2005
(All Rights Reserved)
http://www.cirrus.com
Advance Product Information
This document contains information for a new product.
Cirrus Logic reserves the right to modify this product without notice.
SEPTEMBER '05
DS679A2
Low Power, Stereo CODEC with Headphone Amp
DIGITAL to ANALOG FEATURES
!
98 dB Dynamic Range (A-wtd)
!
-86 dB THD+N
!
Headphone Amplifier - GND Centered
–
On-Chip Charge Pump Provides -VA_HP
–
No DC-Blocking Capacitor Required
–
46 mW Power Into Stereo 16
@ 1.8 V
–
88 mW Power Into Stereo 16
@ 2.5 V
–
-75 dB THD+N
!
Digital Signal Processing Engine
–
Bass & Treble Tone Control, De-Emphasis
–
PCM + ADC Mix w/Independent Vol Control
–
Master Digital Volume Control
–
Soft Ramp & Zero Cross Transitions
!
Beep Generator
–
Tone Selections Across Two Octaves
–
Separate Volume Control
–
Programmable On & Off Time Intervals
–
Continuous, Periodic or One-Shot Beep
Selections
!
Programmable Peak-Detect and Limiter
!
Pop and Click Suppression
ANALOG to DIGITAL FEATURES
!
98 dB Dynamic Range (A-wtd)
!
-88 dB THD+N
!
Analog Gain Controls
–
+32 dB or +16 dB MIC Pre-Amplifiers
–
Analog Programmable Gain Amplifier
(PGA)
!
+20 dB Digital Boost
!
Programmable Automatic Level Control (ALC)
–
Noise Gate for Noise Suppression
–
Programmable Threshold and
Attack/Release Rates
!
Independent Channel Control
!
Digital Volume Control
!
High-Pass Filter Disable for DC Measurements
!
Stereo 3:1 Analog Input MUX
!
Dual MIC Inputs
–
Programmable, Low Noise MIC Bias Levels
–
Differential MIC Mix for Common Mode
Noise Rejection
!
Very Low 64 Fs Oversampling Clock Reduces
Power Consumption
1.8 V to 3.3 V
Multibit
Σ
Modulator
Charge
Pump
Left HP Out
Right HP Out
Multibit
Oversampling
ADC
Multibit
Oversampling
ADC
Serial Audio
Input
Serial Audio
Output
1.8 V to 2.5 V
1.8 V to 2.5 V
MUX
PGA
P
CRegister
L
Reset
Hardware
Mode or I
C &
SPI Software
Mode
Control Data
Stereo Input 1
Stereo Input 2
Stereo Input 3 /
Mic Input 1 & 2
PGA
+32 dB
+32 dB
Volume
Controls
Beep
Generator
MUX
MUX
Headphone
Amp - GND
Centered
Headphone
Amp - GND
Centered
ALC
MIC
1.8 V to 2.5 V
MUX
MUX
Switched
Capacitor DAC
and Filter
Switched
Capacitor DAC
and Filter
High Pass
Filters
ALC
Digital
Signal
Processing
Engine
CS42L51
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