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AD1985JSTZ1

更新时间： 2024-11-24 22:18:19
品牌 Logo 应用领域
亚德诺 - ADI 解码器编解码器
页数 文件大小 规格书
48页 357K
描述
AC ’97 SoundMAX Codec

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AD1985JSTZ1 数据手册

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AC ’97 SoundMAX® Codec  
AD1985  
AC ’97 2.3 COMPLIANT FEATURES  
6 DAC channels for 5.1 surround  
Greater than 90 dB dynamic range  
20-bit resolution on all DACs  
S/PDIF Output  
ENHANCED FEATURES  
Integrated parametric equalizer (EQ)  
Stereo microphone with preamplifiers  
Integrated PLL for system clocking  
Variable sample rate 7 kHz to 96 kHz  
7 kHz to 48 kHz in 1 Hz increments  
96 kHz for double rate audio  
Integrated stereo headphone amplifiers  
Variable rate audio  
Double rate audio (fS = 96 kHz)  
Line-level mono phone input  
High quality CD mixer input  
Selectable MIC input with preamp  
AUX and line in stereo inputs  
External amplifier power down (EAPD)  
Power management modes  
Advanced jack sense with auto topology switching  
Software enabled VREFOUT for microphones and external  
power amp  
Software enabled outputs for jack sharing  
Auto down-mix and channel spreading  
Microphone to mono output  
Stereo microphone analog passthrough to outputs  
Built-in stereo microphone and Center/LFE pin sharing  
Selectable Center/LFE tip/ring swapping to support various  
speaker products  
Jack sensing and peripheral enumeration/identification  
48-lead LQFP package  
FUNCTIONAL BLOCK DIAGRAM  
V
V
XTL_OUT XTL_IN SPDIF_OUT  
REF  
REFOUT  
AD1985  
VOLTAGE  
REFERENCE  
MIC1  
MIC2  
G
Z
G
G
SPDIF  
TX  
CODEC CORE  
PCM L/R  
PHONE_IN  
CD_L  
PLL  
ADC RATE  
ID0  
16-BIT  
M
M
G
G
CD  
Σ-∆ ADC  
ADC  
SLOT  
LOGIC  
CD_GND  
CD_R  
AUX_L  
DIFF AMP  
16-BIT  
Σ-∆ ADC  
ID1  
AUX_R  
LINE_IN_L  
LINE_IN_R  
PCM C/LFE  
DAC RATE  
RESET  
SYNC  
20-BIT  
DAC  
SLOT  
LOGIC  
M
M
GA  
GA  
Σ-∆ DAC  
LFE_OUT  
MZ  
MZ  
A
A
20-BIT  
Σ-∆ DAC  
CENTER_OUT  
LINE_OUT_L  
GA  
GA  
M
GA  
M
GA  
M
GA  
M
BITCLK  
SDATA_OUT  
SDATA_IN  
GA  
M
GA  
M
GA  
M
GA  
M
M
M
M
M M  
MZ  
A
PC BEEP  
GENERATOR  
A
M
M
MONO_OUT  
LINE_OUT_R  
A
A
PCM FRONT  
DAC RATE  
EQ  
EQ  
MZ  
20-BIT  
M
M
GA  
GA  
Σ
Σ-∆ DAC  
Σ
20-BIT  
Σ
AC '97  
Σ-∆ DAC  
SURR_OUT_L/  
HP_OUT_L  
A
A
M
M
HP  
HP  
CONTROL  
REGISTERS  
M
20-BIT  
M
M
GA  
GA  
Σ-∆ DAC  
M
SURR_OUT_R/  
HP_OUT_R  
ANALOG MIXING  
CONTROL  
JACK SENSE  
20-BIT  
Σ-∆ DAC  
G = GAIN  
EAPD  
A = ATTENUATION  
M = MUTE  
PCM SURR  
DAC RATE  
Z = HIGH Z  
EAPD JS0 JS1 JS2 JS3  
Figure 1.  
Rev. A  
Information furnished by Analog Devices is believed to be accurate and reliable.  
However, no responsibility is assumed by Analog Devices for its use, nor for any  
infringements of patents or other rights of third parties that may result from its use.  
Specifications subject to change without notice. No license is granted by implication  
or otherwise under any patent or patent rights of Analog Devices. Trademarks and  
registered trademarks are the property of their respective owners.  
One Technology Way, P.O. Box 9106, Norwood, MA 02062-9106, U.S.A.  
Tel: 781.329.4700  
Fax: 781.326.8703  
www.analog.com  
© 2004 Analog Devices, Inc. All rights reserved.  
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