Apex Embedded Systems LLC

STX104 16-bit Analog I/O

Compatible Operating Systems: Linux, Windows, DOS, OSless
Supported Architectures: x86, ARM

The STX104 is a 16-bit data acquisition (DAQ) card featuring a one million sample buffer. The one million sample buffer significantly reduces software complexity and eliminates interrupt overhead problems, saving time and money. The STX104 is capable of 200K samples/sec transient data recording using no CPU interrupts. The STX104 operating temperature is -40C to +85C. The STX104 also supports two channels of analog output. Please see quick link: stx104.com.

The STX104 offers many feature rich functions for advanced applications including event triggering and a variety of data collection modes. The STX104 is downwardly compatible with the DAS1602 and DAS16jr/16.

The STX104 has 16-channel single-ended or eight true differential 16-bit analog inputs at 200,000 samples/ sec. A variety of data collection modes are possible independent of software, thus significantly reducing software complexity and overhead, saving time and money. Analog input sample timing resolution to 25 nanoseconds.

The STX104 supports two 16-bit analog output channels with sample rates to 100,000 samples/sec. The STX104- ND is a version without the analog output channels; please see product quick link: nodacs.stx104.com.

The STX104 has very flexible CPU interface support including ten or sixteen bit address decoding, and eight or sixteen bit data bus (i.e. without or with 40-pin PC/104 connector, respectively). Bus activity status LED indicates any valid I/O operation.

We are committed to serving our customers. We offer 24/7 online ordering with a variety of payment and shipping options for quick and hassle free ordering. Quick link: buy.stx104.com.

We are committed to delivering long product life and dedicated to ongoing product updates and improvements to enhance long product life.



  • Analog input ranges: ±10V, ±5V, ±2.5V, ±1.25V, 0-10V, 0-5V, 0-2.5V, 0-1.25V
  • Analog output ranges: ±10V, ±5V, 0-5V or 0-10V
  • Interrupts can be generated via a broad range of events including analog input sample count thresholds (one sample to half a million samples), external digital inputs and triggering events. All IRQ lines are supported.
  • Hardware moving average filter
  • Triggering includes: 14 selectable trigger start events, 15 selectable trigger stop events, 12 selectable synchronization events, trigger delay and three possible triggering sequences
  • Single +5V Supply Operation means reduced power supply and system level complexities.


STX104 and STX104-ND (w/o DACs) are available now, in stock and ready to ship today. Please visit us at our website www.apexembeddedsystems.com for more products and services.

Contact Information

Apex Embedded Systems LLC

116 Owen Road
Monona, WI, 53716

tele: 608-256-0767 x24
fax: 608-256-0765

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