AD1881 查看數據表（PDF） - Analog Devices
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AD1881 Datasheet PDF : 22 Pages
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ANALOGDEVICESfAX-ON-DEMANDHOTLINE - Page 38
AD1881
APPLICATIONS CIRCUITS
The AD1881 has been designed to require a minimum amount of external circuitry. The recommended applications circuits are
shown in Figures 9 and 10. Reference designs for the AD1881 are available and may be obtained by contacting your local Analog
Devices' sales representative or authorized distributor. Example shell programs for establishing a communications path between the
ADl881 and an ADSP-21xx are also available.
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AD1881
' RESET
SDATA_OUT 5
~ SDATA_IN 8
BIT_CLK
DIGITAL
CONTROLLER
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REV. 0
Figure 9. Recommended
BOOZ
DIGITAL GROUND
One Codec Application Circuit
2.21kJl-
~MIC
INPUT
-to
=10mVRM~
(mean)
200Hz < FREQUENCY RESPONSE < 5kHz @ -JdB
NOTES:
-MA Y NEED TO OPTIMIZE TO SUIT MICROPHONE
"SELECT MIC1 AND MAX GAIN 20dB +12dB for 10mV
RMS MICROPHONE OUTPUT.
Figure 10. Microphone Input
AD1881
-21-
~--
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