The DS2401 Resistive Sensor Simulation Board makes it possible to simulate resistive sensors, such as thermistors or resistance temperature detectors (RTDs) for temperature measurement.
In hardware-in-the-loop applications, the simulation of sensors plays an important role. While many sensors provide voltages or currents, others have a resistance output, for example, thermistors or resistance temperature detectors (RTDs) for temperature measurement. To simulate these resistive sensors, precise resistance values must be provided.
The DS2401 features four resistance output channels with an identical structure. All channels are insulated from system ground individually. The application running on the processor board writes the desired resistance to the DS2401 board, and the resistance is then simulated electronically between the two output pins of that channel.
| Parameter | Specification | |
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| General |
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| Resistor terminals | Resistance range |
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| Cutoff frequency (-3 dB) |
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| Settling time to 1% |
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| Voltage across resistor |
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| Load current |
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| Initial offset voltage error |
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| Initial resistance error |
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| Total linearity error |
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| Monotonicity |
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| Offset drift |
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| Resistance drift |
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| Noise voltage |
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| Isolation |
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| Overload relay state outputs | Voltage output range |
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| Output current |
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| DEF_EN output | Voltage output range |
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| Output current | Max. -0.4 mA/+20 mA | |
| Triggering |
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| Physical connections |
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| Host interface |
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| Physical characteristics | Physical size |
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| Ambient temperature |
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| Power supply |
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