Measurement-computing CIO-DAS08/JR-AO Instrukcja Użytkownika Pobierz pdf (Strona 12)

Chapter 3

Specifications

Typical for 25°C unless otherwise specified.

Specifications in italic text are guaranteed by design.

Analog input

Table 1. Analog input specifications

Parameter

Specification

A/D converter type

AD574

Resolution

12 bits

Number of channels

8 single-ended

Input ranges

±5 V

A/D pacing

Software polled

Data transfer

Software polled

A/D conversion time

25 µs

Throughput

System dependant

Gain drift (A/D specs)

±50 ppm/°C

Zero drift (A/D specs)

±10 ppm/°C

Absolute maximum input voltage

±30 V continuous

Noise Distribution (Rate = N/A, Average % +/- 2 bins, Average % +/- 1 bin, Average # bins)

Bipolar (5 V)

100% / 100% / 3 bins

Analog output

Table 2. Analog output specifications

Parameter

Specification

D/A converter type

AD7237

Resolution

12 bits

Number of channels

Output ranges

±5V

D/A pacing

Software paced

Data transfer

Programmed I/O

Offset error

±2 LSB typical, ±5 LSB max

Gain error

±2 LSB typical, ±5 LSB max

Differential nonlinearity

±0.9 LSB max

Relative accuracy

±1 LSB max

Monotonicity

Guaranteed monotonic to 12 bits over temperature

D/A gain drift

±25 ppm/°C max

Settling time (10 V step to ±½ LSB)

10 µs max

Current drive

±5 mA

Output coupling

Output impedance

0.5 Ohms max

Miscellaneous

Update DACs simultaneously

1 2 ... 7 8 9 10 11 12 13 14 15 16

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