Measurement Computing USB-TC-AI - Manual (Page 21)

USB-TC-AI User's Guide Specifications
21
Microcontroller
Table 15. Microcontroller specifications
Parameter Specification
Type Two high-performance 8-bit RISC microcontrollers
USB +5V voltage
Table 16. USB +5V voltage specifications
Parameter Specification
USB +5V (VBUS) input
voltage range 4.75 V min to 5.25 V max
Power
Table 17. Power specifications
Parameter Conditions Specification
Supply current USB enumeration <100 mA
Supply current
(Note 14) Continuous mode with all inputs configured for
Disabled mode. 270 mA typ
User +5V output voltage range
(terminal block pin 21) 4.9 V min to 5.1 V max
User +5V output current
(terminal block pin 21) Bus-powered and connected to a self-powered hub.
(Note 14) 5 mA max
Isolation Measurement system to PC 500 VDC min
Note 14: This is the total current requirement for the USB-TC-AI which includes up to 10 mA for the
status LED.
USB specifications
Table 18. USB specifications
Parameter Specification
USB device type USB 2.0 (full-speed)
Device compatibility USB 1.1, USB 2.0
Device power capability Self-powered
USB cable type A-B cable, UL type AWM 2725 or equivalent. (min 24 AWG VBUS/GND,
min 28 AWG D+/D–)
USB cable length 3 meters max
Environmental
Table 19. Environmental specifications
Parameter Specification
Operating temperature range 0 °C to 55 °C max
Storage temperature range –40 °C to 85 °C max
Humidity 0% to 90% non-condensing max