A-3
Noise
2
Bipolar electrical noise
(in counts)
Unipolar electrical noise
(in counts)
• p-p = 1, rms = 0.1 for gain = 1
• p-p = 1, rms = 0.1 for gain = 5
• p-p = 4, rms = 0.5 for gain = 50
• p-p = 8, rms = 1.0 for gain = 250
• p-p = 1, rms = 0.1 for gain = 1
• p-p = 1, rms = 0.1 for gain = 5
• p-p = 6, rms = 0.9 for gain = 50
• p-p = 9, rms = 1.4 for gain = 250
• p-p = 1, rms = 0.1 for gain = 1
• p-p = 1, rms = 0.1 for gain = 2
• p-p = 1, rms = 0.1 for gain = 4
• p-p = 1, rms = 0.1 for gain = 8
• p-p = 1, rms = 0.1 for gain = 1
• p-p = 1, rms = 0.1 for gain = 2
• p-p = 1, rms = 0.1 for gain = 4
• p-p = 1, rms = 0.1 for gain = 8
DMA levels
5, 6, and 7
Interrupt levels
3, 5, 7, 10, 11, and 15
Internal pacer clock rate
Programmable between 0.0012Hz and 333kHz
Minimum external pacer
clock pulse width
10ns
Maximum external pacer
clock rate
333kHz
Minimum hardware trigger
pulse width
10ns
1
Monotonicity is guaranteed over the operating range.
2
The figures in the table show the electrical noise introduced by the analog front end
but do not include
the uncertainty inherent in the quantization process
. The inherent quantization noise introduced by any
ADC is due to uncertainty at code boundaries and adds a peak-to-peak value of 1 LSB to the electrical
noise; it also makes the rms level 0.5 LSBs.
Table A-1. Analog Input Specifications (cont.)
Feature
DAS-1801HC DAS-1802HC
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