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AD1981AJST 参数 Datasheet PDF下载

AD1981AJST图片预览
型号: AD1981AJST
PDF下载: 下载PDF文件 查看货源
内容描述: AC '97的SoundMAX编解码器 [AC ‘97 SoundMAX Codec]
分类和应用: 解码器编解码器
文件页数/大小: 24 页 / 184 K
品牌: AD [ ANALOG DEVICES ]
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a
AC ’97 2.2-COMPLIANT CODEC
FEATURES
S/PDIF Output, 20 Bits Data Format, Supporting
48 kHz and 44.1 kHz Sample Rates
Integrated Stereo Headphone Amplifier
Variable Sample Rate Audio
External Audio Power-Down Control
Greater than 90 dB Dynamic Range
16-Bit Stereo Full-Duplex Codec
20-Bit DAC Input
Three Analog Line-Level Stereo Inputs for
LINE-IN, AUX, and CD
Mono Line-Level Phone Input
Mono MIC Input with Built-In Programmable Preamp
AC ‘97 SoundMAX Codec
AD1981A
High Quality CD Input with Ground Sense
Mono Output for Speakerphone or Internal Speaker
Power Management Support
48-Lead LQFP Package
ENHANCED FEATURES
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 Provide Automatic Output Switching
Software-Programmed V
REFOUT
Output for Microphone
Bias and External Power Amp
Split Power Supplies: 3.3 V Digital and 5 V Analog
Multiple Codec Configuration Options
®
FUNCTIONAL BLOCK DIAGRAM
V
REF
V
REFOUT
XTL_OUT
XTL_IN
ID1
ID0
AD1981A
MIC_IN
AUX
PHONE_IN
CD_L
CD_GND
CD_R
LINE_IN
CD
DIFF AMP
MIC PREAMP
G
VREF
SELECTOR
G
XTAL OSCILLATOR
LINK PORT/
ID SELECT
A/D SAMPLE RATE
GENERATOR
G
G
M
M
16-BIT - A/D
CONVERTER
16-BIT - A/D
CONVERTER
PLL CLOCK
GENERATOR
G
G
M
HP_OUT_L
HP
M
A
M
LINE_OUT_L
M
A
SELECTOR
GA
GA
M
M
M
GA
M
M
GA
GA
M
M
M
GA
GA
GA
M
16-BIT - A/D
CONVERTER
16-BIT - A/D
CONVERTER
20-BIT - D/A
CONVERTER
20-BIT - D/A
CONVERTER
D/A SAMPLE RATE
GENERATOR
AC ’97 SERIAL INTERFACE
M
GA
SPKR
EQ
SPKR
EQ
GA
EQ COEFF STORAGE
MONO_OUT
M
A
AC ’97 CONTROL REGISTERS
M
ANALOG
MUTE
CONTROL
LOGIC
M
SPDIF
LINE_OUT_R
M
A
HP_OUT_R
HP
M
A
JACK SENSE
EAPD
KEY:
G = GAIN
A = ATTENUATE
M = MUTE
JS0
JS1
EAPD
SPDIF
SoundMAX is a registered trademark of Analog Devices, Inc.
REV. 0
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. No license is granted by implication or otherwise
under any patent or patent rights of Analog Devices.
One Technology Way, P.O. Box 9106, Norwood, MA 02062-9106, U.S.A.
Tel: 781/329-4700
Fax: 781/326-8703
© Analog Devices, Inc., 2002
AC ’97 LINK SIGNALS