User`s manual

Noise Performance
Table 6 below summarizes the noise performance for the PCI-DAS1602/12. Noise distribution is deter-
mined by gathering 50K samples @ 330 kHz with inputs tied to ground at the user connector.
Table 6 – Board Noise Performance
0.765100%100%0 to +1.250V
0.453100%100%0 to +2.500V
0.453100%100%0 to +5.000V
0.453100%100%0 to +10.00V
0.765100%100%±1.250V
0.453100%100%±2.500V
0.453100%100%±5.000V
0.453100%100%±10.00V
LSBrms*MaxCounts% within ±1
count
% within ±2
counts
Range
* RMS noise is defined as the peak-to-peak bin spread divided by 6.6
ANALOG OUTPUT SECTION
Table 7. Analog Output Specs
DACs cleared to 0 volts ±200mV maxPower up and reset
0.1 ohmsOutput impedance
DCOutput coupling
Indefinite @ 25 mAOutput short-circuit duration
±5 mACurrent Drive
20V step to 0.012%: 4 µs maxSettling Time
±10V Range: 15V/µs
±5V Range: 10V/µs
0 to 10V Range: 7.5V/µs
0 to 5V Range: 5V/µs
Slew Rate
±0.02 LSB/°COverall Analog Output drift
Guaranteed monotonic over temperature Monotonicity
±10V, ±5V, 0 to 5V, 0 to 10V. Each independently programmableVoltage Ranges
2Number of Channels
12-bitsResolution
AD7945BR multiplying typeA/D Converter type
ACCURACY
Table 8 – Absolute Accuracy – Analog Output
±3.0 LSB0V to +5.000V
±3.0 LSB0V to +10.000V
±3.0 LSB±5.000V
±3.0 LSB±10.000V
Absolute AccuracyRange
39