AD1881A
APPLICATIONS CIRCUITS
The AD1881A has been designed to require a minimum amount of external circuitry. The recommended applications circuits are
shown in Figure 9. Reference designs for the AD1881A are available and may be obtained by contacting your local Analog Devices’
sales representative or authorized distributor.
+5AV
+3.3DV
DD
DD
10F
10F
100nF 100nF
100nF 100nF
AV
SS1
AV
SS2
AV
DD2
DV
DV
DD2
DV
SS1
DV
SS2
AV
DD1
DD1
100nF
10k⍀
1k⍀
PC_BEEP
100nF
0.33F
0.33F
0.33F
0.33F
0.33F
0.33F
0.33F
0.33F
0.33F
0.33F
0.33F
0.33F
0.33F
1F
LINE_IN_R
LINE_IN_L
RESET
MIC1
MIC2
SDATA_OUT
SDATA_IN
SYNC
DIGITAL
CONTROLLER
47⍀
47pF
CD_R
BIT_CLK
CD_L
AD1881A
CD_GND
VIDEO_L
VIDEO_R
CS0
CS1
AUX_L
AUX_R
47
EAPD
EAPD
MODE
48
39
1F
PHONE_IN
LNLVL_OUT_L
7
47k⍀
47k⍀
MONO_OUT
1F
36
LINE_OUT_R
LINE_OUT_L
LNLVL_OUT_R
XTL_IN XTL_OUT
41
1F
47k⍀ 47k⍀
47k⍀
V
V
AFILT1 AFILT2 FILT_L FILT_R CX3D RX3D
34
33
REFOUT
28
REF
27
100nF
24.576MHz
270pF
NP0
270pF
NP0
2.25V
DC
1F
1F
10F
TANT
22pF
NP0
22pF
NP0
47nF
100nF
600Z
DIGITAL GROUND
ANALOG GROUND
NOTE: FOR OPTIMAL PERFORMANCE USE A REGULATED ANALOG POWER SUPPLY.
Figure 9. Recommended One Codec Application Circuit
REV. 0
–21–
ADI [ ADI ]
