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PCIe/104  16-Channel 12-Bit Analog Data Acquisition Module

Operating Temperature -40° to +85°C

SDM35540HR Smart Data Acquisition Module
Rugged IDAN configurations available


At each 10°C temperature increment, the Autonomous SmartCal™ board calibrates in less than 300 ms its analog section before digitizing a known voltage input. Each point on the graph shows how the measured value differs from the known value in Least Significant Bits (LSB). Accuracy is within ±½ LSB.

RTD’s operating system independent unique Autonomous SmartCal™ sets a new industry standard for data acquisition precision and accuracy over a wide temperature range



The SDM35540 turns a PCIe/104 stack into a high-speed, high-performance data acquisition control system. This 16-channel, 12-bit analog I/O module includes auto-calibration for A/D and D/A with an onboard DSP. The SDM35540 features bus mastering, SyncBus, and McBSP serial port.

Key Features

  • PC/104 form factor
  • PCIe/104 stackable bus structure
    • PCIe universal expansion bus (Type 1 or Type 2)
  • Autonomous SmartCal™ - Software Independent Auto-Calibration
    • Texas Instruments TMS320F2812 DSP performs analog auto-calibration onboard
    • 2K EEPROM to save/restore calibration values
    • Self-calibrates in under 300 msec
    • Does not use any host resources during calibration
    • Autonomous SmartCal™ initiated by a single driver function
    • Requires no special software libraries
  • Bus Mastering
  • High Reliability Temperature Range
    • -40°C to +85°C Operation
  • High-speed Analog Inputs
    • Muxed 8 differential or 16 single-ended channels
    • 12-bit, Successive Approximation Register A/D with internal Sample and Hold circuitry
    • 0.8 µs conversion time (1.25 MHz throughput)
    • ±5, ±10, 0 to +10V Analog Input Ranges
    • Programmable binary gains of 1, 2, 4, 8, 16, 32 & 64
    • 8K entry Channel-Gain Scan Memory with Skip Bit
  • High-speed Data Paths
    • PCIe x1 Bus Interface
    • Multichannel Buffered Serial Port (McBSP)
    • 500 kHz sine wave generator
    • DMA
      • 8K A/D FIFO
      • 8K D/A FIFO (x2)
  • Versatile Triggering
    • Software, Pacer Clock, Burst Clock, and External Triggers
    • Pre-, Post-, and About-Trigger Modes
    • Random scan, burst and multiburst using channel-gain table
  • Two fast analog outputs
    • 12-bit resolution
    • Typical 5µs settling time (+/-10V range)
    • ±5, +5, ±10, & +10V output ranges
    • 5mA output current
  • Digital I/O
    • 3 Data-marker Input Bits
    • 8K digital input buffer
    • 8 bit-programmable digital I/O lines and an 8-bit programmable port
    • Advanced digital interrupts
    • -12/+24mA output drive currents
  • Timers and Counters
    • Three 16-bit 8 MHz timer/counters available for User applications.
  • Easy to Use
    • Programmable Interrupt Source
    • Single +5V power supply
  • Mating Connectors
    • Standard 26-pin 0.1" DIL header (Analog)
    • Standard 40-pin 0.1" DIL header (Digital I/O)
    • Standard 10-pin 0.1" DIL header (SyncBus)
    • Standard 10-pin 0.1" DIL header (McBSP)
  • Available in stackable, rugged enclosures
  • Requires only +5 VDC for operation


  • Includes software packages for the following Operating Systems:
    • Windows 7 (32/64-bit) and Windows 10 (32/64-bit)
    • Linux 2.4.x and 2.6.x
  • Source code provided for easy porting to other platforms, including RTOSes.
  • Data acquisition toolkits such as LabVIEW and MATLAB may be used with the Windows drivers.
  • Example programs with source code provide a starting point for developing custom applications.

Physical Attributes

  • Dimensions
    • Length (L): 3.775 inches (95.89 mm)
    • Width (W): 3.550 inches (90.17 mm)
    • Stand-off Height: 0.600 inches (15.24 mm)
  • Weight: Approximately 0.22 lbs. (0.10 Kg)
  • Standard Operating Temperature, 90% humidity non-condensing: -40 to +85°C
  • Storage Temperature: -55 to +125°C
  • Power Consumption: 4.0 W at 5 V

Documentation and Downloads

Ordering Information

Part Number Description Value

  PCIe/104 12-bit 1.25 MHz Smart dataModule with 8K FIFO buffer, and McBSP serial port



RTD Embedded Technologies, Inc.
Designed and Made in the USA
[email protected]   |   +1-814-234-8087