yac526 Yamatake Corporation, yac526 Datasheet - Page 9

• Manufacturer Part Number: yac526
• Description: Electric Variable Resistance
• Manufacturer: Yamatake Corporation

YAC526
■Example of system configuration
Since SDATAO is an
open drain output
pin, connect it to the
power supply of the
destination device
connected through a
resistor.
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
AVSS
SDATAI of
YAC523/
YAC526
IN1, IN2
5V
VDD
Digital Controller
-6V
10
11
12
4
5
6
7
8
9
1
2
3
VSS
TE2
SDATAO
TE1
TE3
ZCEN1
ZCEN2
CSN
SDATAI
DGND
REF
DVSS
SCLK
Analog ground
Digital ground
YAC526
REF2B
REF2A
REF1A
REF1B
AVDD
AVDD
AVSS
AVSS
OUT2
OUT1
IN2
IN1
24
23
22
21
20
19
18
17
15
14
13
16
-6V
+6V
9