OM-USB-TEMP-AI User's Guide
Specifications
30
Memory
Table 17. Memory specifications
EEPROM
1,024 bytes isolated micro reserved for sensor configuration
256 bytes USB micro for external application use
Microcontroller
Table 18. Microcontroller specifications
Type
Two high-performance 8-bit RISC microcontrollers
USB +5V voltage
Table 19. USB +5V voltage specifications
Parameter
Specification
USB +5V (VBUS) input voltage range
4.75 V minimum to 5.25 V maximum
Power
Table 20. Power specifications
Parameter
Conditions
Specification
Supply current
USB enumeration
<100 mA
Supply current
(Note 21)
Quiescent mode with all inputs configured for Disabled mode
270 mA typical
User +5V output voltage range
(terminal block pin 21)
4.9 V minimum to
5.1 V maximum
User +5V output current
(terminal block pin 21)
Bus-powered and connected to a self-powered hub. (Note 21)
5 mA maximum
Isolation
Measurement system to PC
500 VDC minimum
Note 21:
This is the total current requirement for the OM-USB-TEMP-AI which includes up to 10 mA for
the status LED.
USB specifications
Table 21. USB specifications
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 2527 or equivalent. (min 24 AWG VBUS/GND,
min 28 AWG D+/D–)
USB cable length
3 meters maximum