Manual

CDB5529
DS246DB1 3
REF+
AIN+
AIN-
REF-
J1
+5V / 2.5V Analog
C21
0.1µF
R18
301
Ω
R17
301
Ω
C2
4700pF
HDR5
C3
0.68µF
C4
0.68µF
3
4
20
19
HDR1
HDR2
1,LT1019
2,REF+
3,REF-
4,VA-
1, AGND
2, AIN+
1, AIN-
2, AGND
7
C15
0.1µF
LT1019
2.5V
R22
50
Ω
1
U3
C30
10µF
C16
0.1µF
2
+5V / 2.5V Analog
R21
10
Ω
13
C11
0.1µF
C31
10µF
10
Y2
32768Hz
VA+
VA-
AIN+
AIN-
REF+
REF-
VD+
XIN
XOUT
8
CS
15
SDI
14
SDO
9
SCLK
18
D3
17
D2
16
D1
7
D0
12
DGND
To
Figure 2
U4
CS5529
R16
301
Ω
R15
301
Ω
JP4
JP3
A0
A1
11
VA-
6
5
HDR8
-2.5V Analog
HDR9
+5V / 3.3V Digital
DGND
HDR3
VA-
CS
SDI
SDO
SCLK
A0
A1
D0 D1 D2 D3
HDR6
C1
4700pF
Figure 1. Analog Schematic Section