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

• 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.