Output Timing Characteristics

Output Timing Characteristics

Opto-isolated Output Timing

Opto-isolated Output Performance (VEXT = 5 V, REXT = 1.0 KΩ)

Parameter Symbol Measured Value
Output Low Voltage VL 0.81 V
Output High Voltage VH 5.0 V
Output Rise Time tR 7.41 µS
Output Fall Time tF 0.965 uS
Propagation Delay (High to Low) tPDHL 2.01 µS
Propagation Delay (Low to High) tPDLH 31.467 µS

Notes:

  • Rise time measured from 10% to 90% of the pulse amplitude
  • Fall time measured from 90% to 10% of the pulse amplitude
  • Propagation delay measured at middle of rising and falling edges of the pulses
  • Camera’s top case temperature during measurements was ~55°C
  • Values are for reference only. They could vary depending on the test conditions

Output Timing Characteristics of GPIO (Pin 3 / Line 2)

Output measured at point A (Internal VCC = 3.3 V, Internal pull-up resistor, RINT = 4.7 KΩ)

Parameter Symbol Measured Value
Input Rise Time (Signal from FPGA) tR 14.6 nS
Input Fall time (Signal from FPGA) tF 14.6 nS
Propagation Delay (Output Low to High) tPDLH 666.018 nS
Propagation Delay (Output High to Low) tPDHL 148.198 nS
Output Rise Time (GPIO terminal side) tR 388.558 nS
Output Fall time (GPIO terminal side) tF 84.554 nS
Output Low Voltage (GPIO terminal side) VL 0.05 V
Output High Voltage (GPIO terminal side) VH 3.10 V

Notes:

  • Rise time measured from 10% to 90% of the pulse amplitude
  • Fall time measured from 90% to 10% of the pulse amplitude
  • Propagation delay measured at middle of rising and falling edges of the pulses
  • Camera’s top case temperature during measurements was ~55°C

  • Measured Pulse Frequency from FPGA = 65.52 Hz

  • Measured Pulse Width from FPGA = 500.1 uS

  • Values are for reference only. They could vary depending on the test conditions.