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Revision 1.00

15 - 29

AS1543/44

Data Sheet - D e t a i l e d D e s c r i p t i o n

Analog Input Configuration

Input Channel Selection

The input channels for conversion are selected using control register bits ADDR3:ADDR0 and bit SE/FDN.

Table 7. Analog Input Configuration via bits RANGE and SE/FDN

Analog Input Configuration

RANGE

SE/FDN

Comments

8/4-channel single-ended

11

01

4/2-channel fully-differential

10

00

Table 8. Channel Selection via Bits ADDR3:ADDR0 and SE/FDN, AS1544

ADDR3

ADDR2

ADDR1

ADDR0

Analog Input Channel

SE/FDN = 1

(Single-Ended)

Analog Input Channel

SE/FDN = 0

(Fully-Differential)

XX

0

0

XX

0

1

XX

1

0

XX

1

1

Table 9. Channel Selection via Bits ADDR3:ADDR0 and SE/FDN, AS1543

ADDR3

ADDR2

ADDR1

ADDR0

Analog Input Channel

SE/FDN = 1

(Single-Ended)

Analog Input Channel

SE/FDN = 0

(Fully-Differential)

X0

0

0

X0

0

1

X0

1

0

X0

1

1

X1

0

0

X1

0

1

X1

1

0

X1

1

1