Analog Inputs
The DS1103 contains two different types of analog/digital converters
(ADCs) for the analog input channels:
n
Four ADCs with four multiplexed input signals each:
ADCH1
...
ADCH16
n
Four parallel (non-mulitplexed) ADCs with one input signal each:
ADCH17
...
ADCH20
Objective
Information in this section
Hardware details
I/O Circuit and Electrical Characteristics
Information in other sections
Feature description
ADC Unit
(
DS1103 Features
)
Noise, crosstalk and inductive effects can degrade the
signal and lead to incorrect results if you do not perform
the following correctly.
Proper grounding and shielding reduces noise and inductive effects.
I/O Circuit and Electrical Characteristics
The following illustration is a simplified diagram of the input circuitry
of the ADCs.
Input circuit
R
in,amp
> 10 M
Ω
ADC
1 k
Ω
ADCH1 ... ADCH20
1 M
Ω
R
in
»
1 M
Ω
Where to go from here
s
Analog Inputs
t
DS1103 Hardware Installation and Configuration November 2014
163
t
Summary of Contents for DS1103
Page 10: ...s Contents t 10 s DS1103 Hardware Installation and Configuration November 2014 ...
Page 28: ...s Before You Start t 28 s DS1103 Hardware Installation and Configuration November 2014 ...
Page 52: ...s Installing the Hardware t 52 s DS1103 Hardware Installation and Configuration November 2014 ...
Page 160: ...s Mapping of I O Signals t 160 s DS1103 Hardware Installation and Configuration November 2014 ...
Page 218: ...s Troubleshooting t 218 s DS1103 Hardware Installation and Configuration November 2014 ...
Page 219: ...Data Sheets DS1103 Hardware Installation and Configuration November 2014 219 t ...
Page 226: ...s Data Sheets t 226 s DS1103 Hardware Installation and Configuration November 2014 ...
Page 302: ...s Index t 302 s DS1103 Hardware Installation and Configuration November 2014 ...