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Datasheets and User Guides

App Notes

Software & Driver


1.1 Core Features

Analog I/O

  • 14 Analog Inputs (16-18+ Bits Depending on Speed), expand to 84 with Mux80
  • Single-Ended Inputs (14) or Differential Inputs (7)
  • Instrumentation Amplifier Inputs
  • Software Programmable Gains of x1, x10, x100, and x1000
  • Analog Input Ranges of ±10, ±1, ±0.1, and ±0.01 Volts
  • 2 Analog Outputs (12-Bit, ~0-5 Volts)

Digital I/O

  • 23 Digital I/O
  • Supports SPI, I2C, 1-Wire and Asynchronous Serial Protocols (Master Only)
  • Supports Software or Hardware Timed Acquisition
  • Maximum Input Stream Rate of 100 kHz (Depending on Resolution)
  • Capable of Command/Response Times Less Than 1 Millisecond

Digital I/O Extended Features

  • Simple PWM Output (1-32 bit)
  • PWM Output w/ phase control
  • Pulse Output w/ phase control
  • Positive edge capture
  • Negative edge capture
  • PWM measure
  • Edge capture & compare
  • High speed counter
  • Software counter
  • Software counter w/ debounce
  • Quadrature Input
  • Easy Frequency Input

Analog Input Extended Features

  • User Defined Slope & Offset
  • Thermocouple type E, J, K, R, T, and C calculations
  • RTDs
  • Thermistors

Other highlights

  • Built-In CJC Temperature Sensor
  • Watchdog system
  • Field Upgradable Firmware
  • Programmable Startup Defaults
  • LJTick Compatible

Fixed Current Outputs

  • 200 µA
  • 10 µA



Can you please add the specs for the VS supply here? Maybe a voltage vs load curve? I'm trying to drive ratiometric sensors, and knowing what the supply is would really help. Thanks!

That would likely go in the VS section, but we can't provide a voltage versus load curve as that depends on the power supply you are using.  If you are using a ratiometric sensor consider powering it from a DAC output rather than VS, and either way use an analog input to measure the actual excitation voltage in real time.

I figured out that the 5V supply was whatever was coming from the USB cable. It would have been nice to see that spelled out directly, which I didn't find. Perhaps stating something like this would help: the 5V supply on the labjack comes directly from the USB port, so the voltage stability and current availability will change depending on the USB power source. Please ensure loads do not draw VS below 4.75V.