AD7324

Rev. 0 | Page 25 of 36

SEQUENCE REGISTER

The sequence register on the AD7324 is a 4-bit, write-only register. Each of the four analog input channels has one corresponding bit in

the sequence register. To select a channel for inclusion in the sequence, set the corresponding channel bit to 1 in the sequence register.

MSB

LSB

16

15

14

13

12

11

10

9

8

7

6

5

4

3

2

1

Write

Register Select 1

Register Select 2

0

0

0

0

0

0

0

0

0

RANGE REGISTER

The range register is used to select one analog input range per analog input channel. It is an 8-bit, write-only register with two dedicated

range bits for each of the analog input channels from Channel 0 to Channel 3. There are four analog input ranges, ±10 V, ±5 V, ±2.5 V, and

0 V to +10 V. A write to the range register is selected by setting the write bit to 1 and the register select bits to 0 and 1. After the initial write to

the range register occurs, each time an analog input is selected, the AD7324 automatically configures the analog input to the appropriate

range, as indicated by the range register. The ±10 V input range is selected by default on each analog input channel (see Table 13).

MSB

LSB

16

15

14

13

12

11

10

9

8

7

6

5

4

3

2

1

Write

Register Select 1

Register Select 2

0

0

0

0

0

Table 13. Range Selection

Description

0

0

0

1

1

0

1

1