Acromag IP231-16E 16-Bit D/A Analog Output Module

The Acromag IP231-16E is a 16-bit Digital-to-Analog (D/A) output module for industrial control and data acquisition systems. It delivers 16 independent single-ended analog voltage output channels, each with its own 16-bit DAC and 13 µS settling time. The module operates over a bipolar output range of −10 to +10 V with maximum output current of ±5 mA and supports both individual and simultaneous channel updates. Built to ANSI/VITA 4-1995 IP specifications, the IP231-16E functions across extended industrial temperatures from −40 to 85 °C, making it suitable for harsh environments where precision analog output is critical.

– Technical Specifications

Analog Outputs
• 16 single-ended voltage output channels
• 16-bit D/A resolution with bipolar offset binary format
• Output range: −10 to +10 V
• Settling time: 13 µS per channel
• System accuracy: 0.00305% of 20 V span maximum at 25 °C, unloaded
• Linearity error: ±2 LSB maximum
• Maximum output current: ±5 mA (minimum load resistance 5 kΩ at 10 V)
• Double-buffered data latches per channel
• Output at reset: 0 V

Performance
• Single-channel update throughput: 13 µS/conversion
• Simultaneous 16-channel update: 13 µS/16 channels
• Built-in calibration coefficients for software calibration
• Individual D/A converters eliminate glitches and improve speed

Access Times (8 MHz Clock)
• ID EEPROM read: 250 nS (0 wait states)
• DAC channel data write: 500 nS (2 wait states)
• Control register access: 375 nS (1 wait state)
• Offset/gain coefficient read: 375 nS (1 wait state)

Environmental
• Operating temperature: −40 to 85 °C
• Storage temperature: −55 to 100 °C
• Relative humidity: 5 to 95% non-condensing
• MTBF: 3,445,793 hours at 25 °C (MIL-HDBK-217F, notice 2)

– Key Features

• Industry Pack (IP) module form factor per ANSI/VITA 4-1995
• Individual update (transparent mode) or simultaneous update of all outputs
• Supports 14–26 AWG solid or stranded wiring with 85 °C minimum temperature rating
• Twisted pair or shielded twisted pair wiring recommended

– Typical Applications

Process control, instrumentation, automated test systems, industrial data acquisition, and closed-loop feedback systems requiring multi-channel precision analog output.

– Compatibility & Integration

Designed for upright DIN rail mounting. Supports IOSel and IDSel data transfer cycle types for DAC data, control registers, and calibration coefficient access.