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Measurement Computing CIO-DAS6402/12 User Manual

Page 34

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8.2

CIO-DAS6402/12

Typical for 25°C unless otherwise specified.

Power consumption

Icc: Operating

1.05 A typical, 1.6 A max

Analog input section

A/D converter type

ADS7800, Successive Approximation

Resolution

12 bits

Programmable ranges

±10V, ±5V, ±2.5V, ±1.25V, 0 to 10V, 0 to 5V, 0 to 2.5V, 0 to 1.25V

A/D pacing

Programmable: internal counter or external source (DIN0, rising edge)

Data transfer

Compatible: Byte wide, interrupt, software polled, DMA
Enhanced: Word wide, interrupt, software polled, REP INSW
Above via 1k sample FIFO
Burst Mode (programmable option) @ 250 kHz

Polarity

Unipolar/Bipolar, software-selectable

Number of channels

Compatible: 8 differential or 16 single-ended, software-selectable
Enhanced: 32 differential or 64 single-ended, software-selectable

Interrupts

Programmable levels 2, 3, 5, 7, 10, 11, 15
Positive-edge triggered

Interrupt enable

Programmable interrupt enable for internal and external interrupt

Interrupt sources

End-of-conversion, FIFO not empty, FIFO half full, end-of-burst, external

Trigger sources

Compatible: External hardware/software (DIN0)
Enhanced: External trigger/gate (DIN1), edge/level, polarity/edge programmable.

A/D Triggering Modes

Digital:

Software configurable for Edge (triggered) or level-activated (gated).
Programmable polarity (rising/falling edge trigger, high/low gate).
Pre-trigger:
Unlimited pre- and post-trigger samples. Total # of samples must be > 512.

A/D conversion time

3 µs

Throughput

333 kHz min

Differential Linearity error

±.75 LSB

Integral Linearity error

±.5 LSB

No missing codes guaranteed

12 bits

Gain drift (A/D specs)

±6 ppm/°C, all ranges

Zero drift (A/D specs)

±1 ppm/°C, all ranges

Input leakage current (@25 Deg C)

200 nA

Input impedance

Min 10Meg Ohms

Absolute maximum input voltage

±15V

30

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