Preliminary Information - Subject to Change - Product Release April 2026

Description

The ADU816 USB Analog Input Interface provides 8 single-ended, 16-bit analog inputs that accept voltage ( 0-5V, 0-10V, +/-5V,+/-10V ) or current ( 0-20mA, 4-20mA 0-24mA) signals. The ADU816 samples at up to 1000s/s/channel with both polling and data streaming modes. Outstanding 60dB 50/60Hz noise rejection, including lower order harmonics, at 100ms (10Hz) scan rate. This low-cost USB Analog Input Interface is easy to use with VB, VB.NET, C, Python, MATLAB, LABView, Unity, etc. via standard HID drivers included with Windows and most other operating systems. A Windows mini-driver (DLL) is also provided allowing control using standard ASCII commands using familiar readfile, writefile commands. The ADU816 includes a 10' USB cable and is available as a PCB or in an enclosure with several mounting options including FLANGE( standard), DIN rail, or VELCRO.
Download ADU816 3D STEP files for FLANGE and DIN mounting types.

Key Features

Use with standard 0-5V, 0-10V, +/-5V, +/-10V, 0-20mA, 4-20mA, 0-24mA signals
Programmable Scan rates of 100ms (10Hz), 20mS (50Hz), 16.6ms (60Hz), 10ms (100Hz), or 1ms (1KHz)
60dB reduction of 50/60Hz noise, including lower order harmonics, at 100ms(10Hz) scan rate.
All ranges span extra 2.5% for overrange detection. (I.E. 0-5V range reads 0 to 5.12V)
Three standard configurations;
TYPE A : 8 voltage inputs
TYPE B : 4 voltage and 4 current inputs
TYPE C : 8 current inputs.
PTC self-resetting fused inputs.
High Retention USB connector.
CE Marked
Bus Powered, No external power supply required.
2500V isolation to USB connection
Bi-colour LED status indicator.
High quality cage-clamp type terminal blocks.
Uses standard HID drivers included with Windows.
Mini-driver (DLL) provided for use with VB, VC, LabVIEW etc.
Programming examples and sample code available for VB, Visual C++, Matlab, Python etc.
Meets IEC61000-4-2 ESD protection for USB port, and all analog inputs.
Standard with FLANGE mount, DIN mount or VELCRO mount options available.

Typical Applications

Industrial Controls
Process Monitor
OEM Instruments Embedded Control
HVAC/Building Control

Technical Specification

Supply Voltage	NONE (Bus Powered)
USB Supply Current	75mA Typical 100mA Max
USB Connection Type	Full-speed USB 2.0
Operating Temperature	0-70C
Resolution	16-bits (00000 to 65535)
Voltage Input Ranges	0-5.12V, 0-10.24V, +/-5.12V, +/-10.24V
Current Input Range	0-25.6mA, +/- 25.6mA
Total Absolute Unadjusted Error	+/-0.1% FSR Max
Temperature Stability)	+/-4ppm FSR/Degree C Max
Input Impedance (Voltage Input)	1 Mohm Minimum
Input Impedance (Current Input)	300 ohm
Current Loop Compliance Voltage	7 VDC Maximum
Scan Rates	100ms(10Hz), 20ms ( 50Hz), 16.6ms (60Hz), 10ms(100Hz), 1ms(1 KHz)
Data Format	Decimal(ASCII) or Hex
Mounting Options	Desktop, Velcro, Flange (Standard), DIN Rail