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AD1981BLJSTZ-REEL

更新时间： 2024-11-25 04:03:39
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
32页 1641K
描述
AC 97 SoundMAX Codec

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AD1981BLJSTZ-REEL 数据手册

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AC ’97 SoundMAX® Codec  
AD1981BL  
AC ’97 2.3 COMPATIBLE FEATURES  
S/PDIF output, 20-bit data format, supporting  
48 kHz and 44.1 kHz sample rates  
Integrated stereo headphone amplifier  
Variable sample rate audio  
External audio power-down control  
>90 dB dynamic range  
Stereo full-duplex codec  
ENHANCED FEATURES  
Stereo MIC preamplifier support  
Built-in digital equalizer function for optimized  
speaker sound  
Full-duplex variable sample rates from 7040 Hz to  
48 kHz with 1 Hz resolution  
Jack sense pins for automatic output switching  
Software-programmed VREFOUT output for biasing  
microphone and external power amplifier  
Low power 3.3 V operation for analog and digital supplies  
Multiple codec configuration options  
20-bit PCM DAC  
3 analog line-level stereo inputs for line-in, AUX, and CD  
Mono line-level phone input  
Dual MIC input with built-in programmable preamplifier  
High quality CD input with ground sense  
Mono output for speakerphone or internal speaker  
power management support  
48-lead LQFP package, Pb-free available  
FUNCTIONAL BLOCK DIAGRAM  
V
V
REF  
XTL_OUT XTL_IN SPDIF  
REFOUT  
AD1981BL  
VOLTAGE  
REFERENCE  
G
MIC PREAMP  
CODEC CORE  
SPDIF  
TX  
MIC1  
G
G
MIC2  
PHONE_IN  
CD_L  
PCM L/R  
ADC RATE  
PLL  
ID0  
16-BIT  
G
G
M
M
CD  
DIFF AMP  
Σ-∆ ADC  
CD_GND  
CD_R  
16-BIT  
ID1  
AUX_L  
Σ-∆ ADC  
AUX_R  
LINE_IN_L  
LINE_IN_R  
ADC  
RESET  
SYNC  
AND  
DAC  
SLOT  
LOGIC  
16-BIT  
G
G
M
M
Σ-∆ADC  
16-BIT  
Σ-∆ ADC  
BIT_CLK  
SDATA_OUT  
SDATA_IN  
A
MONO_OUT  
M
20-BIT  
GA  
GA  
M
M
Σ-∆ DAC  
EQ  
HP  
A
A
A
A
HP_OUT_L  
LINE_OUT_L  
LINE_OUT_R  
HP_OUT_R  
M
20-BIT  
Σ-∆ DAC  
GA  
M
GA  
M
EQ  
PCM FRONT  
DAC RATE  
G = GAIN  
GA  
M
GA  
M
MZ  
A = ATTENUATION  
M = MUTE  
GA  
M
GA  
M
Z = HIGH Z  
GA  
M
GA  
M
AC '97  
MZ  
CONTROL  
REGISTERS  
M
HP  
M
ANALOG MIXING  
CONTROL LOGIC  
EAPD  
EAPD  
M
JS0  
JS1  
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  
© 2005 Analog Devices, Inc. All rights reserved.  
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