Measurement-computing USB-1208FS-Plus-OEM Manuel d'utilisateur télécharger pdf (Page 18)

USB-1208FS-Plus-OEM User's Guide Functional Details

Power

Connecting the device to a computer draws <100 mA of current from the USB +5V supply. When running

applications, the current that can be drawn from all device connections (analog, digital, SYNC, and +VO output

loading) is <500 mA. The maximum output current that is available at the +VO power output terminal is

100 mA.

With all outputs at their maximum output current, the USB-1208FS-Plus-OEM in a fully-loaded configuration

may be above that allowed by the computer. In this case, determine the per-pin loading in the application to

ensure that the maximum loading criteria is met. The per-pin loading is calculated by dividing +5V by the load

impedance of the pin in question.

Mechanical drawings

Figure 13. Circuit board dimensions

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Measurement-computing USB-1208FS-Plus-OEM Manuel d'utilisateur Page 18