National Instruments sbRIO-9605 - Page 52

NI sbRIO-960x/962x/963x OEM Instructions & Specifications 52 ni.com
Analog Output Characteristics
NI sbRIO-9623/9633
Number of channels................................4
DAC resolution.......................................12 bits
Max update rate
1
.....................................336 kS/s
Range ......................................................0–5 V
Output impedance...................................13 Ω typical, 27 Ω max
Current drive...........................................±1 mA / channel max.
Protection................................................Short-circuit to ground
Power-on state
2
.......................................0 V
1
This is the maximum update rate when running one AO channel in a loop with the FPGA top-level clock set to 40 MHz.
2
When power is applied, the analog outputs remain high impedance until the FPGA loads for the first time. When the FPGA
loads, the analog outputs become low-impedance sources driving 0 V. During the transition from high to low impedance, the
outputs typically glitch for about 60 µs. The magnitude of the glitch is inversely proportional to the load capacitance. With a
300 pF load, the peak is typically 0.25 V.
Error (ppm of Step Size)
Source Impedance (Ω)
100 1000
10000
100000
100000
10000
1000
100
10