Measurement Computing PCI-DAC6702 - Manual (Page 18)

18
Chapter 4
Specifications
Typical for 25 °C unless otherwise specified.
Specifications in italic text are guaranteed by design
Analog output
Table 1. Analog output specifications
D/A converter type Enhanced R-2R
Resolution 16-bits, 1 in 65536
Number of channels PCI-DAC6703: 16 voltage
PCI-DAC6702: 8 voltage
DNL ±1 LSB max
Monotonicity 16-bits, guaranteed after calibration
Update rate, max PCI-DAC6703: 1111 S/s per channel
PCI-DAC6702: 1111 S/s per channel
Update modes Software selectable per channel for update immediate (default), or update from
NVRAM on command
Output short-circuit duration Indefinite @ 25 mA
Power-on state Independent, user-defined power-on states.
Table 2. Voltage output specifications
Range ±10.1 V
Output coupling DC
Output impedance 0.1 Ω max.
Current drive ±10 mA max
Load capacitance 10,000 pF
Slew rate 0.5 V/µs typ.
Settling time (full scale step) 7.2 ms max to ±0.5 LSB
Noise 100 µVrms, DC to 1 MHz BW
Offset temperature coefficient ±5 µV/ºC
Gain temperature coefficient ±1 ppm/ºC
Protection Short circuit to ground
Data transfer Programmed I/O
Table 3. Absolute accuracy components - all values are (±)
Range 1 % of Reading Offset Temp Drift 2
(%/ºC)
Absolute Accuracy at FS
±10 V 0.0019 ±710 µV 0.0001 ±1 mV
Note 1: Temp drift applies only if the ambient temperature changes by more than ±10ºC since the last
calibration.
Note 2: Each PCI-DAC670x board is tested at the factory to assure that the overall error does not exceed
the values specified in Table 3.
Table 4. Relative accuracy
Range Relative Accuracy
±10 V ±1.0 LSB, max
Relative accuracy is defined as the measured deviation from a straight line drawn between measured endpoints
of the transfer function.