The Analog to Digital Converter consists of a 4-channel 16 bit sigma-delta converter and two, 2-channel analog switches. These are configured to allow input and conversion on two differential channels and 4 single ended channels. The 6-channel Analog to Digital signals are contained on connector HD5 which is a 16 pin (2x8) 0.1" spacing header. The connector layout and the signals carried by each pin are defined below. The input range for the differential input channels is 0- 2 VDC, and the input range on the single-ended channel is nominally 0-10 VDC.
Pinout
|
Header
|
Pin
|
Type
|
Signal
|
1
|
Single ended
|
Channel 6
|
2
|
N/A
|
GND
|
3
|
Single ended
|
Channel 5
|
4
|
N/A
|
GND
|
5
|
Single ended
|
Channel 4
|
6
|
N/A
|
GND
|
7
|
Single ended
|
Channel 3
|
8
|
N/A
|
GND
|
9
|
N/A
|
Not connected
|
10
|
N/A
|
GND
|
11
|
Differential
|
Channel 2-
|
12
|
Differential
|
Channel 2+
|
13
|
N/A
|
GND
|
14
|
Differential
|
Channel 1-
|
15
|
Differential
|
Channel 1+
|
16
|
N/A
|
GND
|
|
16
|
15
|
14
|
13
|
12
|
11
|
10
|
9
|
8
|
7
|
6
|
5
|
4
|
3
|
2
|
1
|
|