Measurement Computing USB-1608GX-2AO-OEM - Manual (Page 22)

USB-1608GX-2AO-OEM User's Guide Specifications
22
Timer
Table 14. Timer specifications
Parameter Specification
Terminal name TMR
Timer type PWM output with count, period, delay, and pulse width registers
Output value Default state is idle low with pulses high, Software-selectable output invert
Internal clock frequency 64 MHz
Register widths 32-bit
High pulse width 15.625 ns min
Low pulse width 15.625 ns min
Output high voltage 4.4 V min (IOH = –50 µA)
3.76 V min (IOH = –2.5 mA)
Output low voltage 0.1 V max (IOL = 50 µA)
0.44 V max (IOL = 2.5 mA)
Output current ±2.5 mA max
Memory
Table 15. Memory specifications
Parameter Specification
Data FIFO 4 kS analog input/2 kS analog output
Non-volatile memory 32 KB (28 KB firmware storage, 4 KB calibration/user data)
Power
Table 16. Power specifications
Parameter Condition Specification
Supply current (Note 3) Quiescent current 260 mA
+5 V user output voltage range Available at terminal block pin 43 4.5 V min to 5.25 V max
+5 V user output current Available at terminal block pin 43 10 mA max
Note 3: This is the total quiescent current requirement for the device that includes up to 10 mA for the Status
LED. This does not include any potential loading of the digital I/O bits, +5V terminal, or the AOUTx
outputs.
USB
Table 17. USB specifications
Parameter Specification
USB device type USB 2.0 (high-speed)
Device compatibility USB 1.1, USB 2.0
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 m (9.84 ft) max