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CX20741 PDF预览

CX20741

更新时间: 2024-11-06 12:51:31
品牌 Logo 应用领域
科胜讯 - CONEXANT /
页数 文件大小 规格书
2页 641K
描述
Dedicated Line Output

CX20741 数据手册

 浏览型号CX20741的Datasheet PDF文件第2页 
2
CX20741/45 I S Audio Codec with 2W Class-D,  
Capless HP, and Digital Microphone  
Overview  
Features  
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The CX20741/45 are I S audio codecs with integrated stereo Class-D speaker  
amplifiers, capless headphone amplifiers and provides 98 dB dynamic range. The  
CX20745 supports the Industrial temperature range while the CX20741 supports the  
Commercial temperature range.  
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2 pairs of independent DACs and 3  
pairs of independent ADCs  
Sampling rates include 16-bit, 44.1  
kHz to 24-bit, 192 kHz for DACs, and  
from 16-bit, 44.1 kHz to 24-bit; 96 kHz  
for ADCs.  
Integrated 2 WRMS (per channel)  
class-D stereo speaker amplifier  
Capless headphone eliminates BOM  
Dedicated Line Output  
Multiple input/output retaskable ports  
Stereo Digital Microphone interface  
Integrated boost for all microphones  
Two independent SPDIF outputs  
Integrated regulators maximize  
performance  
Microphone Security Control  
Integrated headphone limiter (GS  
Mark)  
D-Flex Power Management  
Wake on PC BEEP  
PopShield eliminates pops and clicks  
Fidelity exceeds Microsoft WHCK  
requirements  
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The integrated filter-less Class-D stereo amplifier with Spread Spectrum EMI dispersion  
technology is capable of driving up to 2W RMS per channel into 4 Ω speakers. Built-in,  
fully configurable hardware EQ and Dynamic Range Compression improve frequency  
response, maximize output volume, and get maximum audio performance from  
integrated speakers while remaining independent of driver and OS.  
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A stereo pair of capless headphone drivers includes integrated short circuit protection  
and auto-recovery. These high performance headphone drivers save cost by eliminating  
external headphone amplifiers and DC blocking capacitors. The capless architecture  
outputs a full-range frequency response of 98 dB or better. Both Apple and Nokia style  
headsets are supported as well inline command sensing for headset button controls.  
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One single-ended analog line output can be used to drive powered speakers or external  
devices. One stereo differential Microphone/Line In port is available and it is re-taskable  
to single-ended. Programmable microphone boost and bias is provided. Local analog  
loopbacks with EQ/DR from Line or Microphone inputs to the outputs can be configured.  
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A digital microphone interface allows interfacing to two digital microphones. That  
interface includes a hardware DC-level filter that eliminates problems caused by digital  
microphones with DC offset with programmable clock outputs. Hardware Automatic Gain  
Control (AGC) is available for all microphone paths to normalize the capture levels in real  
time. The digital I/Os, I C and I S interfaces support a wide range of and all run at 3.3V.  
The Hardware Digital Volume Control supports up-down buttons as well as an infinity  
volume control knob commonly found in high-end AV equipment.  
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Jack sense detects up to 8 jacks  
Digital Mixer  
Compliant with all Intel High Definition  
Audio Specifications  
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Selectable 1.5V/3.3 V link signaling  
Available in 48-/56-QFN and in 48-/  
64-QFP packages  
Two integrated Low Dropout Regulators (LDOs) generate the internal clean power rails  
needed for analog and digital. All output ports feature PopShield circuitry that eliminates  
pops and clicks. Jack sensing is available that can detect up to four jacks with  
programmable switch de-bounce times.  
Software  
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Linux  
Android 3.x/4.x  
DSP Plug-ins  
Voice input processing  
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Block Diagram  
Applications  
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Tablets  
Portable Media Players  
Smartphones  
Digital Docking Stations  
Part Number CX20741/45  
2
Description I S Audio Codec  

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