Datasheet

ADS1258-EP

www.ti.com

SBAS445D –MARCH 2009– REVISED MARCH 2011

BITS DATA[23:0] OF DATA BYTES

The ADC output data are 24 bits wide (DATA[23:0]). DATA23 is the most significant bit (MSB) and DATA0 is the

least significant bit (LSB). The data is coded in binary twos complement format.

Table 11. Channel ID and Measurement Order (Auto-Scan Mode)

BITS CHID[4:0] PRIORITY CHANNEL DESCRIPTION

00h 1 (Highest) DIFF0 (AIN0–AIN1) Differential 0

01h 2 DIFF1 (AIN2–AIN3) Differential 1

02h 3 DIFF2 (AIN4–AIN5) Differential 2

03h 4 DIFF3 (AIN6–AIN7) Differential 3

04h 5 DIFF4 (AIN8– AIN9) Differential 4

05h 6 DIFF5 (AIN10–AIN11) Differential 5

06h 7 DIFF6 (AIN12–AIN13) Differential 6

07h 8 DIFF7 (AIN14–AIN15) Differential 7

08h 9 AIN0 Single-Ended 0

09h 10 AIN1 Single-Ended 1

0Ah 11 AIN2 Single-Ended 2

0Bh 12 AIN3 Single-Ended 3

0Ch 13 AIN4 Single-Ended 4

0Dh 14 AIN5 Single-Ended 5

0Eh 15 AIN6 Single-Ended 6

0Fh 16 AIN7 Single-Ended 7

10h 17 AIN8 Single-Ended 8

11h 18 AIN9 Single-Ended 9

12h 19 AIN10 Single-Ended 10

13h 20 AIN11 Single-Ended 11

14h 21 AIN12 Single-Ended 12

15h 22 AIN13 Single-Ended 13

16h 23 AIN14 Single-Ended 14

17h 24 AIN15 Single-Ended 15

18h 25 OFFSET OFFSET

1Ah 26 VCC AVDD – AVSS Supplies

1Bh 27 TEMP Temperature

1Ch 28 GAIN Gain

1Dh 29 (Lowest) REF External Reference

Product Folder Link(s): ADS1258-EP