Measurement Computing CIO-DAS48-PGA - Manual (Page 15)

15
Chapter 4
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 48 single-ended, 24 differential (configurable as 24 modified differential via
installation of SIP resistor)
Input type Voltage input or current input, configurable by jumper and installation of SIP
resistors for current configuration
Input ranges ±10 V, ±5 V, ±2.5 V, ±1.25 V, ±0.625 V, 0 to 10 V, 0 to 5 V, 0 to 2.5 V, 0 to
1.25 V, software selectable
Polarity Unipolar/Bipolar, software selectable
A/D pacing Software polled
Data transfer Software polled
A/D conversion time 25µs
Throughput 20 kS/s, PC dependent
Accuracy ±0.01% of reading ±1 LSB
Differential linearity error ±1 LSB
Integral linearity error ±0.5 LSB
No missing codes guaranteed 12 bits
Gain drift (A/D specs) ±25 ppm/°C
Zero drift (A/D specs) ±10 µV/°C
Common mode range ±10 V
CMRR 72 dB
Input leakage current (@ 25 C) 100 nA
Input impedance 10 Meg Ohms min
Absolute maximum input voltage ±35V
Noise distribution (Rate = 1-10 kHz, Average % +/- 2 bins, Average % +/- 1 bin, Average # bins)
Bipolar 10V 100% / 100% / 3 bins
5V 100% / 98.8% / 4 bins
2.5V 100% / 96.8% / 4 bins
1.25V 100% / 98.2% / 5 bins
0.625V 100% / 99% / 5 bins
Unipolar 10V 100% / 98.6% / 4 bins
5V 100% / 98.8% / 4 bins
2.5V 100% / 97.4% / 4 bins
1.25V 100% / 98.2% / 4 bins
Power consumption
Table 2. Power consumption specifications
+5 V 620 mA typical, 800 mA max