The Acromag IP330 is a 16-bit analog-to-digital input module engineered for high-resolution data acquisition in industrial control and monitoring systems. It delivers flexible channel configurations—16 differential or 32 single-ended inputs—with programmable gain settings and multiple input voltage ranges. The module integrates with carrier boards to scale channel capacity and employs surface-mounted technology for dense signal conditioning in demanding environments.
Technical Specifications
Analog Inputs
• Resolution: 16-bit A/D converter
• Channel configuration: 16 differential or 32 single-ended channels
• Input ranges: ±5 V, ±10 V (requires ±15 V external supplies), 0–5 V, 0–10 V (requires ±15 V external supplies)
• Programmable gains: 1×, 2×, 4×, 8× per channel
• System accuracy: 2 LSB (0.0030%) typical at 25°C with software calibration and 1× gain
• Data format: Straight binary or two’s complement
• Input overvoltage protection: Vss −20 V to Vdd 40 V (powered); −35 V to 55 V (unpowered)
• Common-mode rejection ratio (60 Hz): 96 dB typical
• Channel-to-channel rejection ratio (60 Hz): 96 dB typical
Performance
• Maximum throughput (single channel): 125 kHz (8 µs/conversion); 66 kHz (15 µs/conversion) recommended
• Maximum throughput (16 differential channels): 4.2 kHz (240 µs)
• Maximum throughput (32 single-ended channels): 2.1 kHz (480 µs)
• Conversion time: 8 µs per conversion
• Data sample memory: Individual channel mailbox with one or two storage buffer registers per channel
Scanning and Triggering
• Burst mode: Scans selected channels at maximum conversion rate
• Uniform mode: User-defined conversion intervals
• External trigger input: TTL-compatible, active low edge-sensitive, minimum 500 ns low pulse
• External trigger output: Hardware-generated synchronization signal
• Timed periodic triggering: Programmable Timer Prescaler (8-bit) and Conversion Timer (16-bit), variable periods 8 µs to 2.0889 s
• Continuous or single-cycle acquisition modes
Interrupts
• Post-conversion interrupt generation after single channel or group completion
• INTREQ0* signal to carrier; ROAK acknowledge mechanism
• 8-bit interrupt service routine vector on data line
– Key Features
• Flexible input topology accommodates balanced and single-ended signal sources
• Per-channel gain adjustment eliminates external amplification for low-level signals
• Programmable acquisition timing supports both synchronous and asynchronous measurement scenarios
• Overvoltage protection safeguards inputs across power states
• Modular design enables multi-module synchronization via external trigger output
– Typical Applications
• Multi-channel sensor data logging and signal conditioning
• Process control feedback loops requiring independent gain scaling
• Synchronized measurement systems using external hardware triggering
• High-density analog front ends in distributed industrial networks
– Compatibility & Integration
The IP330 integrates with Acromag carrier boards to form complete analog acquisition systems. External ±15 V supply rails support operation across the full input voltage range. Hardware trigger outputs enable master-slave configurations for multi-module synchronization without software overhead.
