Parametrics; Noise Performance - Measurement Computing PCI-DAS6030 User Manual

PCI-DAS6030 & PCI-DAS6032 User's Guide

Parametrics

Parameter
Max working voltage
(signal + common-mode)
CMRR @ 60 Hz
Small signal bandwidth, all ranges
Input coupling
Input impedance
Input bias current
Input offset current
Absolute maximum input voltage
Power on and reset state
Crosstalk
Note 3: The analog input sink/source current must be limited to an maximum of ±20 mA in the power OFF
state to prevent damage to the board. A 1000 Ω (¼ W) current limiting resistor should be placed in
series with each analog input channel being used in applications where the power OFF state
sink/source current into the board can exceed ±20 mA. Resistance values >1000 Ω may adversely
affect the noise and settling time performance of the board.
Note 4: Care should be taken to avoid the application of an input voltage to CH0 IN that could overdrive the
analog input circuit. Any unused analog input channel should be connected to LLGND.

Noise performance

Table 8 summarizes the noise performance for the PCI-DAS6030 and PCI-DAS6032. Noise distribution is
determined by gathering 50 K samples with inputs tied to ground at the user connector. Samples are gathered
100 kS/s sampling rate. The specification applies to both single-ended and differential modes of operation.
Range
±10 V
±5 V
±2 V
±1 V
±500 mV
±200 mV
±100 mV
0 to 10 V
0 to 5 V
0 to 2 V
0 to 1 V
0 to 500 mV
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Table 7. Parametric specifications
Specification
±11 V
±10 V range and 0 to 10 V: 92 dB
±5 V range and 0 to 5 V:
±2 V range and 0 to 2 V:
±1 V range and 0 to 1 V:
±0.5 V range and 0 to 0.5 V: 105 dB
±0.2 V range and 0 to 0.2 V: 105 dB
±0.1 V range and 0 to 0.1 V: 105 dB
255 kHz
DC
100 GΩ in normal operation.
±200 pA
±100 pA
Power ON: ±25 V, Power OFF: ±15 V (±20 mA, Note 3)
Protected inputs:
 CH<15:0> IN
 AISENSE
CH0 IN, single-ended mode, 0 V to 0.1 V input range (Note 4)
Adjacent Channels: –75 dB
All other Channels: –90 dB
Table 8. Analog input noise performance specifications
LSBrms
0.6
0.6
0.6
0.6
0.7
1.1
2.0
0.8
0.8
0.8
0.8
1.1
37
97 dB
101 dB
104 dB
Typical counts
8
8
8
8
8
11
17
8
8
8
8
11
Specifications