DA6116.010
5 October, 2017
APPLICATION INFORMATION
Application Note 3 – Single supply voltage usage
Single supply voltage circuit below is based on signal AC coupling and biasing output opamp in the middle point
of supply voltages. Note that only right channel circuit is presented. The left channel circuit would be exactly the
same. The component values have been chosen to limit overall lower corner frequency to about 10 Hz.
AVCC DVCC
+ 5V supply
10F
RFO
MAS6116
(Right Channel)
1M
1M
IN
OUT (inverted)
+
-
10F
10F
RIN
RMO
100nF
AC
10k
1M
RGND
LGND
DGND
AGND
Application Note 4 – Lower supply voltage MCU communication example 1
If the serial control interface is driven from an MCU that operates from a lower supply voltage compared to the 5V
supply voltage, used by MAS6116, level shifting is needed to get correct digital signal levels in the communication.
The bi-directional DATA line requires additionally level shifting in both directions. The figure below shows an
example of a serial interface level shifting between 3V and 5V voltage supplies. In this example level shifters with
output enable function are used. The output enable function is used to disable the level shifter output when the
MAS6116 bi-directional data line direction changes.
+3V
+5V
+5V
DVDD
AVDD
VDD
+3V
+5V
GPIO
MAS6116
MCU
DATA
GPIO
GPIO
OE
+5V
+5V
+5V
CLK
XCS
GPIO
GPIO
GPIO
XMUTE
16 (20)
MAS [ MICRO ANALOG SYSTEMS ]
