Acromag IP320 12-Bit A/D Analog Input Module

The Acromag IP320 is a 12-bit analog-to-digital input module engineered for high-density data acquisition in industrial process control, monitoring, and automation systems. It combines 40 single-ended or 20 differential input channels with successive approximation conversion at 8.5 µS per sample, delivering up to 100K samples per second. Four modules can cascade on a single carrier board for up to 160 single-ended inputs, making it ideal for distributed I/O applications requiring precision analog measurement across multiple voltage ranges and gain settings.

Technical Specifications

• 40 single-ended or 20 differential channels per module


• Up to four modules per carrier board: 160 single-ended or 80 differential inputs


• Programmable channel selection via control register ADC Performance


• 12-bit resolution


• Successive approximation architecture


• 8.5 µS conversion time


• 100K samples per second maximum throughput


• Programmable input gains: ×1, ×2, ×4, ×8 Input Voltage Ranges


• −5 V to +5 V


• −10 V to +10 V (requires ±15 V external supply; ±12 V supplies clip to ±9 V)


• 0 V to +10 V Calibration & References


• On-board precision voltage references


• Software-calibrated via built-in calibration references Power Consumption


• +5 V: 350 mA maximum


• ±12 V or ±15 V rails: 20 mA maximum each Environmental


• Operating temperature: 0 °C to 70 °C


• Storage temperature: −40 °C to 100 °C


• Relative humidity: 5 % to 95 % non-condensing


• MTBF: 564,198 hours at 25 °C (MIL-HDBK-217F) Physical


• Single-size Industry Pack form factor


• ANSI/VITA 4-1995 compliant


• 8 MHz clock; 250 nS cycle (0 wait states) for most operations; 375 nS for control register write; 625 nS for ADC read

Key Features

• External hardware trigger input for event synchronization


• Software-initiated A/D conversion


• Supports IOSel* and IDSel* cycle types


• Multiple gain settings accommodate low-level and high-level signals without external conditioning

Typical Applications

• Industrial process monitoring and control


• Multi-channel data acquisition systems


• Sensor signal conditioning and digitization


• Distributed I/O in automated manufacturing

Compatibility & Integration The IP320 integrates into any Industry Pack carrier board supporting ANSI/VITA 4-1995 modules. Stacking up to four units provides dense analog input capability within a single system slot, simplifying board-level integration for space-constrained applications.