Measurement-computing CIO-DDA06 Manual do Utilizador descarregar pdf (Página 17)

Chapter 5

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 AD7237

Resolution 12-bits

Number of channels 6

Output ranges Bipolar: ±10 V, ±5 V, ±2.5 V, ±1.67 V

Unipolar: 0 to 10 V, 0 to 5 V, 0 to 2.5 V, 0 to 1.67 V

Each channel is independently switch-selectable.

Offset error Trimmable to zero

Gain error Trimmable to zero

Differential nonlinearity ± ½LSB max

Integral nonlinearity ± ½LSB max

Monotonicity ± ½LSB max

D/A gain drift ±15 ppm/°C typical, ±30 ppm/°C max

D/A bipolar offset drift ±7 ppm/°C typical, ±15 ppm of FSR/°C max

D/A unipolar offset drift ±1 ppm/°C typical, ±3 ppm of FSR/°C max

D/A settling time (20 V step to ±0.01%) 5 µs typ, 10 µs max

Slew rate 5 V/µs

Current drive ±5 mA

Output short-circuit current 20 mA indefinite

Output coupling DC

Output impedance 0.1 Ohms max

D/A pacing Software paced

D/A trigger modes Software

Data transfer Programmed I/O

Throughput System dependent

Miscellaneous

 Double buffered output latches

 Update DACs individually or simultaneously (jumper selectable by pairs)

 Power up and reset option, jumper selectable (revision 3 and up): With

jumper set to "ZERO", all DAC's cleared to 0 volts, ±32 mV, DACs set to

simultaneous update mode until first read. With jumper set to "STD", DAC

output on power-up is undefined.

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