Cirrus Logic CS5509 - Manual (Page 18)

CS5509
18 DS125F3
Figure 9b. System Connection Diagram Using Split Supplies
CS5509
+5V
Analog
Supply
VD+ VA+
VREF+
VREF-
GND
0.1 µF 0.1 µF
8
7
9
10
11
12
13
+
-
Analog
Signal
AIN+
AIN-
SCLK
SDATA
14
15
XIN
XOUT
16
DRDY
CAL
3
1
CS
CONV
2
6
BP/UP
4
5
32.768 kHz
Voltage
Reference
Optional
Clock
Source
Serial
Data
Interface
Control
Logic
+3.3V to +5V
Digital
Supply
Note: VD+ must never be more positive than VA+