⚡±12V Voltage & ±24 mA Current Outputs from USB

This compact USB DAC/IDAC module provides two channels of true ±12V voltage output and ±24 mA programmable current output, both with 16-bit resolution. Perfect for rapid prototyping, generating control voltages, simulating sensors, driving analog loads, or creating precise test signals directly from Python.

👉 Now includes all features of the USB to I²C Converter with GUI — giving you both high-precision analog outputs and full USB-to-I²C control in a single device.

🧾 Technical Specifications

• Output Channels: 2 independent outputs
• Update Rate: 20 kS/s per channel
• Resolution: 16-bit
• Power: Powered via USB (5V)
• Connector: USB-C
• Dimensions: 45 × 55 mm
• DAC
  • Voltage Range: ±12 V
  • Voltage Accuracy: ±0.1%
  • Offset Voltage: <1 mV (0 V output)
  • Max. Output Current: ±30 mA per channel, short-circuit safe
  • Output Impedance: ~1.5 Ω
  • Rise Time: >5 V/µs
• IDAC
  • Current Range: ±24 mA
  • Current Accuracy: ±0.1%
  • Offset Current: <10 µA (0 mA output)
  • Rise Time: >8 mA/µs

🐍 Easy Python Control

Control both DAC and IDAC channels through the simple interface-expander Python library. The API provides straightforward functions for setting precise voltages and currents on each channel, making it easy to integrate the module into automated test setups or rapid prototyping workflows.

1) Set voltages example 2) Periodic waveforms example 3) Stream waveforms example 4) Set currents example

You can find this and more example code here.

🎯 Perfect For

This module is an essential tool for:

• Embedded Engineers & Developers creating and testing analog control systems.
• Lab Technicians & Researchers who need a programmable voltage or current source for experiments.
• Audio Engineers & Electronics Hobbyists working with synthesizers and equipment that requires control voltages.
• Anyone who needs reliable, computer-controlled analog outputs

📦 What's Included

• Assembled and tested USB DAC/IDAC module (USB cable not included)
• Access to Python library and documentation
• Full feature set of the USB to I²C Converter with GUI, including graphical control and I²C scripting

🚀 Getting Started

1. Plug in via USB-C cable
2. Run pip install interface-expander
3. Start controlling analog voltages/currents from your code
4. Example code available on GitHub.

Disclaimer: This product is a development and evaluation board intended only for engineers, makers, and developers. It is not a finished consumer product and is not intended for use in any critical or end-user applications. Use at your own risk.

RoHS Compliance: This product is RoHS compliant according to Directive 2011/65/EU and Amendment 2015/863/EU. All components, solder, and the printed circuit board have been sourced from reputable suppliers and do not contain restricted substances above the maximum allowed limits.