Allen-Bradley 1756-IF8I | 8-Channel Isolated Analog Input Module (Voltage/Current, 24-Bit, Loop Power)

Overview

The Allen-Bradley 1756-IF8I is a high-precision analog input module for ControlLogix systems, offering 8 isolated differential input channels for voltage or current signals. Featuring 24-bit resolution, notch filtering, and a software-configurable internal loop power source per channel, this module delivers superior accuracy and flexibility in industrial process and control applications.

Its fully isolated inputs ensure minimal noise interference, while the 36-pin interface allows easy wiring and secure connections.

Key Features

• 8 Individually Isolated Analog Inputs – Each channel is fully isolated from others

• Voltage & Current Input Support – User-selectable input type

• 24-Bit Resolution – High-resolution signal acquisition

• Differential Inputs – Reduces common-mode noise

• Notch Filter – Suppresses unwanted signal frequencies

• Internal Loop Power Option – Software-configurable per channel

• 36-Pin Terminal Interface – For secure and organized wiring

• Hot-Swappable & ControlLogix Compatible

Technical Specifications

• Catalog Number: 1756-IF8I

• Number of Inputs: 8 isolated differential channels

• Signal Types: Voltage (±10V), Current (0–20 mA, 4–20 mA)

• Resolution: 24 bits

• Input Isolation: Channel-to-channel and channel-to-backplane

• User-Selectable Loop Power: Yes (internal or external per channel)

• Notch Filter: Built-in, software-configurable

• Accuracy: ±0.03% of full scale (typical)

• Backplane Current: ~350 mA @ 5.1V DC

• Connector: 36-pin RTB (removable terminal block)

• Operating Temperature: 0°C to +60°C

• Mounting: ControlLogix chassis

• Compatible Software: Studio 5000 Logix Designer

Applications

• Precision Process Control – Ideal for instrumentation and analog sensors

• Machine Automation – Accurate input for motion and position feedback

• Loop-Powered Sensors – Internal power simplifies installation

• Electrical Isolation Needs – Prevents cross-talk and signal degradation

Why Choose the 1756-IF8I?

• 24-bit high-resolution input with full isolation per channel

• Built-in loop power saves space and wiring time

• Ideal for clean analog signal acquisition in complex environments

Order Now

Available and ready to ship globally.