ADA8282

Data Sheet

Rev. 0 | Page 16 of 21

BASIC CONNECTIONS FOR A TYPICAL

APPLICATION

The ADA8282 is typically configured to operate with a nominal

3.3 V power supply, using the EPAD as the analog ground

connection. Place the bypass capacitors as close as possible to

the power supply pins to minimize the length of metal traces in

series with the bypassing paths. AC couple the inputs and

outputs for each channel as shown in Figure 30. Pull the RESET pin

low with a 10 kΩ resistor and drive it with 3.3 V GPIO logic.

The SPI pins can be directly connected to the SPI bus.

24

+OUTA

23

–OUTA

22

+OUTB

21

–OUTB

20

+OUTC

19

–OUTC

18

+OUTD

17

–OUTD

1

2

3

4

5

6

7

8

+INA

–INA

+INB

–INB

+INC

–INC

+IND

–IND

ADA8282

EPAD TIED

TO GROUND

0.1µF

0.1µF

0.1µF

0.1µF

0.1µF

0.1µF

0.1µF

0.1µF

0.1µF

0.1µF

0.1µF

0.1µF

0.1µF

0.1µF

0.1µF

0.1µF

INPUT A

SOURCE

INPUT B

SOURCE

INPUT C

SOURCE

INPUT D

SOURCE

0.1µF

0.1µF

0.1µF

0.1µF

+3.3V

+3.3V

+3.3V

GPIO: +3.3V/0V

+3.3V

10kΩ

SPI BUS

TO ADC

TO ADC

TO ADC

TO ADC

Figure 30. Typical Component Connections