2.5.3
Mode 3 - 0-5V Differential
This in put mode pro vides for 8 chan nels of 0- 5volt dif fer en tial in put. The cor rect jump
-
er ing for this mode is shown be low :
Each chan nel's in put is con nected to J3. Ref er to sec tion 2.6 for the in put pin defi ni -
tions.
When used in mode 3, bi nary val ues range from 0 to FFFFH as shown in the fol low ing
ta ble.
Full Scale Range :
0.0 - 5.0 Volts
Least Sig nifi cant Bit (LSB) :
76uV (16- Bit)
or 1.22mV (12- Bit)
+Full Scale (FS- 1LSB) :
4.999924V(16- Bit)
or 4.99878V (12- Bit) FFFFH
Mid scale :
2.50V 8000H
One LSB Be low Mid scale :
2.4999924V(16- Bit)
or 2.49878(12- Bit) 7FFFH
-Full Scale
0.0V 0000H
NOTE : On the PCM-A/D-12 the lower nib ble of the hex value will al ways be 0.
Page 2-6
PCM-A/D-12/16 OPERATIONS MANUAL
970513
WinSystems - "The Embedded Systems Authority"
1 o o 2
3 o o 4
5 o o 6
7 o o 8
9 o o 10
11 o o 12
13 o o 14
15 o o 16
2 4 6
o o o
o o o
1 3 5
1 o
2 o
1 o
2 o
3 o
J1
J7
J5
J4
0-5 Volt - Differential Mode
