J1: Analog Connector
2-4
Table 2−1. Analog Connector Pin Descriptions
Pin Number
Pin Name
Standard
Name
Direction
Function
Connection
1
AN0−
AN0−
Input
Negative input 0
Through S1
2
AN0+
AN0+
Input
Positive input 0
Through S2
3
AN1−
AN1−
Input
Negative input 1
Through S3
4
AN1+
AN1+
Input
Positive input 1
Through S4
5
AN2−
AN2−
Input
Negative input 2
Direct
6
AN2+
AN2+
Input
Positive input 2
Direct
7
AN3−
AN3−
Input
Negative input 3
Direct
8
AN3+
AN3+
Input
Positive input 3
Direct
10
OBREF
VCOM
Output
Reference output/
common-mode reference
Direct
18
SYSREFN
REF−
Input
Negative reference input
Through S5
20
SYSREFP
REF+
Input
Positive reference input
Through S6
9, 11, 13, 17, 19
GND
AGND
Power
Signal ground
n/a
Note: Channels 0 and 1 are not used unless the input select switches S1−S4 are set to the appropriate
positions. Channels 1 and 2 are hard-wired to the device.
Summary of Contents for ADS1224EVM
Page 1: ... April 2004 User s Guide SBAU095 Data Acquisition Products ...
Page 14: ...Setting Up 1 6 ...
Page 30: ...Clock Circuitry 3 4 ...
