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Overview
The MCP6SX2 PGA Thermistor PICtail Demo Board features the MCP6S22 and MCP6S92 Programmable Gain Amplifiers (PGA). These devices help:
A complete solution is achieved by interfacing this board to the PICkit™ 1 Flash Starter Kit (see DS40051) and the Signal Analysis PICtail™ Daughter Board (see DS51476). The solution provides:
- Overcome the non-linear response of the on-board NTC thermistor
- Provide multiplexing between two inputs; the other input can be any desired source. This opens the possibilities of temperature correcting another sensor, and of increasing the number of PIC® microcontroller I/O pins available for other purposes.
Two on-board variable resistors allow users to experiment with different designs on the bench. DIP switches on the board select certain resistors (in a binary weighted sequence) to add together, thereby emulating the series resistor in the voltage divider and the thermistor’s change in resistance over temperature.
A complete solution is achieved by interfacing this board to the PICkit™ 1 Flash Starter Kit (see DS40051) and the Signal Analysis PICtail™ Daughter Board (see DS51476). The solution provides:
- PC software interface
- PICmicro microcontroller
- Firmware programmability
- 10-bit ADC (on the microcontroller)
- Firmware (with re-locatable assembler code) for the microcontroller.
On-Board Thermistor
- Can select a high accuracy NTC thermistor
- Can select an emulator for quick bench work
- Linearizes thermistor’s response
- Series resistor has an emulator for quick prototyping of different designs
PGA
- Buffers the NTC Thermistor
- Increases linearity and temperature resolution
- Provides an additional input
SMD Test Points
The MCP6SX2 PGA Thermistor PICtail Demo Board features the MCP6S22 and MCP6S92 Programmable Gain Amplifiers (PGA). These devices help:
A complete solution is achieved by interfacing this board to the PICkit™ 1 Flash Starter Kit (see DS40051) and the Signal Analysis PICtail™ Daughter Board (see DS51476). The solution provides:
- Overcome the non-linear response of the on-board NTC thermistor
- Provide multiplexing between two inputs; the other input can be any desired source. This opens the possibilities of temperature correcting another sensor, and of increasing the number of PIC® microcontroller I/O pins available for other purposes.
Two on-board variable resistors allow users to experiment with different designs on the bench. DIP switches on the board select certain resistors (in a binary weighted sequence) to add together, thereby emulating the series resistor in the voltage divider and the thermistor’s change in resistance over temperature.
A complete solution is achieved by interfacing this board to the PICkit™ 1 Flash Starter Kit (see DS40051) and the Signal Analysis PICtail™ Daughter Board (see DS51476). The solution provides:
- PC software interface
- PICmicro microcontroller
- Firmware programmability
- 10-bit ADC (on the microcontroller)
- Firmware (with re-locatable assembler code) for the microcontroller.
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Documentation
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Document Category
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| MCP6S21/2/6/8 Datasheet | Data Sheets | Download | ||
| Thermistor PGA PICtail Daughter Board User's Guide | User Guide | Download | ||
| Thermistor Temperature Sensing with MCP6SX2 PGAs | Application Notes | Link | Download | |
| MCP6SX2 PGA Thermistor PICtail Demo Board Gerbers | Board Design Files | Download | ||
| MCP6SX2 PGA Thermistor PICtail Demo Board Firmware | Software Libraries and Firmware | Download | ||
| Design Spreadsheets | Miscellaneous | Download | ||
| PICkit™ 1 FLASH Starter Kit User's Guide | User Guide | Download | ||
| Single-Ended, Rail-to-Rail I/O, Low-Gain PGA | Data Sheets | Download | ||
| Signal Analysis PICtail™ Daughter Board User's Guide | User Guide | Download |