YAC526
■Example of system configuration
When there is a fear that voltage exceeding the maximum rating is applied to the analog input pins (IN1 and IN2)
of YAC526, connect diodes between AVDD and AVSS as shown below to prevent application of voltage
exceeding the maximum rating to the input pins.
Please make an analog domain and a digital domain into the ground side separated, respectively, and arrange
YAC526 to an analog domain and the impedance to an AVSS pin should become small as much as possible.
And please secure an area large enough, and a radiation noise should fully be stopped and an analog ground and
a digital ground also make it.
Control signals, such as serial interface, should wire a digital ground side collectively. In order to prevent
interference with a control signal and an analog signal, be careful for an analog signal and a digital signal not to
cross or not to adjoin.
Analog input terminal protection
AVDD
IN1,ꢀIN2
AVSS
5V
Since SDATAO is an
open drain output
pin, connect it to the
power supply of the
destination device
connected through a
resistor.
Digital Controller
VDD
VSS
YAC526
SDATAI of
YAC523/
YAC526
1
24
23
22
21
20
19
18
17
16
15
14
13
ZCEN1
ZCEN2
CSN
IN1
REF1A
REF1B
OUT1
AVDD
AVSS
AVSS
AVDD
OUT2
REF2B
REF2A
IN2
2
3
4
SDATAI
DGND
REF
5
6
-6V
7
-6V
DVSS
SCLK
SDATAO
TE1
8
+6V
9
10
11
12
TE2
TE3
Digital ground
Analog ground
9
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