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Explore the capabilities of the Sensor AFE System before implementing in hardware. Prepare for offline development and evaluation by generating a register map that can be imported into the offline tool.
- Become familiar with the development environment
- Develop preliminary design
- Save/export register map for offline tool
For more information about Sensor AFE ICs and evaluation boards:
Temperature, Pressure, Load, Force, & Other Sensor AFE Design with
LMP90100 – Multi-Channel 24-bit Sensor AFE
Configure RTD, thermocouples, analog temperature sensors, and pressure sensors using up to 7 single-ended or combination of single-ended and differential mux inputs. Each channel is programmed for gain and output data rate up to 214.65 SPS. Two separate references can be used, and a programmable current source is available to bias the sensor.
The LMP90100 Sensor AFE features the industry's only low-power, fully configurable 24-bit ΣΔ ADC with true continuous background calibration, eliminating gain and offset drift over time and temperature and making it ideal for critical performance and low power applications.
- Multi-channel Sensor AFE with a 24-bit Sigma Delta ADC core
- Flexible, programmable mux (4 differential, 7 single-ended, or a combination)
- Continuous background sensor diagnostics reduces downtime and improves system efficiency
- Quick design and evaluation
- Ideal for high-precision, multi-sensor temperature, pressure, load, and force applications
- Industrial, process control, medical, and test & measurement applications
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The WEBENCH Sensor Designer tool provides a complete sensor to digital serial output solution. Your design will include a sensor interface, excitation source, precision amplifier, and an analog filter. This is followed by a serial-output, ADC that has a resolution between 8- and 16-bits. The WEBENCH Sensor Designer software makes it easy to design and optimize your sensor path. Just click the sensor type that you are interested in below to start your design.
Example schematic: Bridge sensor output is amplified by a 3-amp instrumentation-style amplifier. The amplifier circuit is driving a single-ended ADC.
How to use this design tool:
1. Explore & Learn
Click the blue Start Design button for your desired sensor type and choose a pre-loaded sensor, or enter a custom sensor to meet your needs. Then click the 'Create Design' button.
2. Compare & Select
Review the resulting schematic, bill of materials, performance summary, and other technical results in the Design Summary overview. Click on any of the displayed panels to review more advanced or detailed information behind each panel. You can modify design parameters or further optimize your design by selecting a different sensor, amplifier, ADC, or other system parameters.
3. Design & Build
Print a report to document your design or order evaluation kits, and other tools in the Documentation panel. You can then program your sensor board using the SPUSI2 Data Capture Board and Software.
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Chemical & Gas Sensor AFE Design with
LMP91000 – Micro-Power Chemical & Gas Sensor AFE
Configure the potentiostat, including programmable cell bias and transimpedance amplifier (TIA) gain for oxygen and other gas sensors.
The LMP91000 low-power gas and chemical Sensor AFE provides adjustable bias (sensor drive), sensitivity, and wide dynamic range in an integrated solution for multiple sensing applications. For example, a toxic gas sensing application that today may require several boards and up to 25 components is reduced to just one LMP91000 gas sensor AFE.
- Single analog design for multiple gases and gas concentrations
- Programmable cell bias and TIA gain
- Integrated temperature sensor for external temp monitoring / correction
- Quick design and evaluation
- Ideal for micro-power gas and chemical sensing applications
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