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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.

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.

MAS6116

DATA

+5V

+5V

DVDD

AVDD

CLK

XCS

XMUTE

MCU

+3V

GPIO

GPIO

GPIO

GPIO

VDD

GPIO

GPIO

+5V

+5V

OE

+5V

+5V

+3V

AVCC

DVCC

+ 5V supply

MAS6116

RFO

(Right Channel)

1M



1M



IN

10

F

+

10

F OUT (inverted)

RIN

RMO

-

100nF

1M



10k



RGND

DGND

LGND

AGND

10

F

AC