Measurement Computing PCI-DAS1602/12 - Manual (Page 24)

PCI-DAS1602/12 User's Guide Specifications
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Noise performance
Table 5 summarizes the noise performance for the PCI-DAS1602/12. Noise distribution is determined by
gathering 50 K samples @ 330 kHz with inputs tied to ground at the user connector.
Table 5. Noise performance specifications
Range % within ±2 counts % within ±1 count MaxCounts LSBrms*
±10 V 100% 100% 3 0.45
±5 V 100% 100% 3 0.45
±2.5 V 100% 100% 3 0.45
±1.25 V 100% 100% 5 0.76
0 to +10 V 100% 100% 3 0.45
0 to +5 V 100% 100% 3 0.45
0 to +2.5 V 100% 100% 3 0.45
0 to +1.25 V 100% 100% 5 0.76
* RMS noise is defined as the peak-to-peak bin spread divided by 6.6.
Analog output
Table 6. Analog output specifications
A/D converter type AD7945BR multiplying type
Resolution 12-bits
Number of channels 2
Voltage ranges ±10 V, ±5 V, 0 to 5 V, 0 to 10 V. Each independently programmable
Monotonicity Guaranteed monotonic over temperature
Overall analog output drift
 ±0.02 LSB/°C
Slew rate
 ±10 V Range: 15 V/µs
 ±5 V Range: 10 V/µs
 0 to 10 V Range: 7.5V/µs
 0 to 5 V Range: 5 V/µs
Settling time 20 V step to 0.012%: 4 µs max
Current drive ±5 mA
Output short-circuit duration Indefinite @ 25 mA
Output coupling DC
Output impedance 0.1 ohms
Power up and reset DACs cleared to 0 volts ±200 mV max
Accuracy
Table 7. Absolute accuracy specifications
Range Absolute Accuracy
±10 V ±3.0 LSB
±5 V ±3.0 LSB
0 V to +10 V ±3.0 LSB
0 V to +5 V ±3.0 LSB