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Analog Devices - AC97 SoundMAX Codec

Numéro de référence AD1885
Description AC97 SoundMAX Codec
Fabricant Analog Devices 
Logo Analog Devices 





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AD1885 fiche technique
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AC’97 SoundMAX® Codec
AD1881A
AC’97 2.1 FEATURES
ENHANCED FEATURES
Variable Sample Rate
Mobile Low Power Mixer Mode
True Line-Level Output
Digital Audio Mixer Mode
Supports Secondary Codec Modes
Full Duplex Variable 8 kHz to 48 kHz Sampling Rate
AC’97 FEATURES
Designed for AC’97 Analog I/O Component
48-Lead LQFP Package
Multibit ⌺⌬ Converter Architecture for Improved
S/N Ratio Greater than 90 dB
with 1 Hz Resolution
PHAT™ Stereo 3D Stereo Enhancement
Split Power Supplies (3.3 V Digital/5 V Analog)
Extended 6-Bit Master Volume Control
Audio Amp Power-Down Signal
16-Bit Stereo Full-Duplex Codec
Four Analog Line-Level Stereo Inputs for Connection
from LINE, CD, VIDEO, and AUX
Two Analog Line-Level Mono Inputs for Speakerphone
and PC BEEP
Mono MIC Input Switchable from Two External
Sources
High Quality CD Input with Ground Sense
Stereo Line-Level Output
Mono Output for Speakerphone or Internal Speaker
Power Management Support
FUNCTIONAL BLOCK DIAGRAM
CS0 CS1 EAPD
MODE
AD1881A
MODE/SYNCHRONIZER
MIC1
MIC2
LINE_IN
AUX
CD
VIDEO
PHONE_IN
MONO_OUT
LNLVL_OUT_L
LINE_OUT_L
LINE_OUT_R
0dB/
20dB
PGA
16-BIT
⌺⌬ A/D
CONVERTER
PGA
16-BIT
⌺⌬ A/D
CONVERTER
MV
MV
D
A
M
MV
⌺⌺
G G GG G G
A A AA A A
M M MM M M
POP
PHAT
STEREO
⌺⌺⌺⌺
G
A
NC M
POP
PHAT
STEREO
⌺⌺⌺ ⌺⌺
NC G
A
M
SAMPLE
RATE
GENERATORS
16-BIT
⌺⌬ D/A
CONVERTER
16-BIT
⌺⌬ D/A
CONVERTER
RESET
SYNC
BIT_CLK
SDATA_OUT
SDATA_IN
LNLVL_OUT_R
PC_BEEP
A G = GAIN
M A = ATTENUATE
M = MUTE
MV = MASTER VOLUME
NC = NO CONNECT
OSCILLATORS
SoundMAX is a registered trademark and PHAT is a trademark of Analog Device, Inc.
REV. 0
XTL_OUT XTL_IN
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
which 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 World Wide Web Site: http://www.analog.com
Fax: 781/326-8703
© Analog Devices, Inc., 2000

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