26 OPAL-RT Technologies OP4200 User Manual
OP4242-1 16 Analog inputs
OP4242-1 16 ANALOG INPUTS
FEATURES
• 16 analog input channels, 16 bits, 2 MSPS
• All inputs are sampled simultaneously for additional simulation accuracy. They can be sampled up
to 2 MS/s
• 16 bit resolution
• ±20V input range.
DESCRIPTION
The OP4240-1-1 module provides 16 differential analog input channels. Each channel uses a 16-bit
resolution analog-to-digital converter. By default, the maximum input signal is set to ±20 volts.
SCHEMATICS
The figure below represents a simplified schematic of the input stage of the OP5342 modules. The first
filter removes excessive noise. The signal is then attenuated to maintain the maximum input voltage
range of ±20 Volts with no additional resistors.
- To ADC
- To ADC
-
+
-
+
+ IN
+ IN
R1
R5
1K0 1%
475k1%
475k 1%
24K91%
24K91%
1K0 1%
R2
R6
10
R1
200pF
R1
200pF
R1
R1
Filter 800kHz
-10
0
10
-10
0
Figure 17: Differential input ADC circuit
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