Measurement-computing PCI-DAC6702 Manuel d'utilisateur télécharger pdf (Page 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

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

% of Reading

Offset

Temp Drift

(%/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.

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