Use module block and input circuit diagrams – Rockwell Automation 1756-XXXX ControlLogix Analog I/O Modules User Manual
Page 67
Publication 1756-UM009C-EN-P - December 2010
67
Non-isolated Analog Voltage/Current Input Modules (1756-IF16, 1756-IF8) Chapter 4
Use Module Block and
Input Circuit Diagrams
This section shows the 1756-IF16 and 1756-IF8 modules’ block diagrams and
input circuit diagrams.
1756-IF16 Module Block Diagram
1756-IF8 Module Block Diagram
DC-DC
Converter
16-bit A/D
Converter
RIUP
Circuit
43504
16-bit A/D
Converter
16-bit A/D
Converter
16-bit A/D
Converter
Vref
Opto
isola-
tion
Micro-
Controller
Backplane
ASIC
Serial
EEPROM
FLASH
ROM
SRAM
System
+5V
Field Side
Backplane Side
DC-DC
Shutdown
Circuit
Input Data
Configuration Data
Control
Channels 0…3
Channels 4…7
Channels 8…11
Channels 12…5
Details of the 1756-IF16 input
circuitry are on the following pages.
DC-DC
Converter
16-bit A/D
Converter
RIUP
Circuit
43494
16-bit A/D
Converter
Vref
Opto
isola-
tion
Serial
EEPROM
FLASH
ROM
SRAM
System
+5V
Field Side
Backplane Side
DC-DC
Shutdown
Circuit
Channels 0…3
Channels 4 …7
Details of the 1756-IF8 input
circuitry are on the following pages
Micro-
Controller
Backplane
ASIC
Input Data
Configuration Data
Control