Measuring Temperature with the

文章摘要：BE1 voltage. To start the ADC conversion, set the STRT bit in the ADC register. The ADC will do a conversion and the result will be in the DATA register. Read the DATA register value and save as a 16-bit integer named VBE1 for later calculation.Step 7. Set the ADC Input for VR1Set the ADC positive i

Measuring Temperature with the,标签：模拟电子技术基础,模拟电子电路,http://www.88dzw.com
BE1 voltage. To start the ADC conversion, set the STRT bit in the ADC register. The ADC will do a conversion and the result will be in the DATA register. Read the DATA register value and save as a 16-bit integer named V_BE1 for later calculation.

Step 7. Set the ADC Input for V_R1

Set the ADC positive input multiplexer for AGND by setting MUXP[3:0] to 0x09 the MUX register. Set the ADC negative multiplexer for AIN2 by setting MUXN[3:0] to 0x07 the MUX register. To measure the AIN2 input relative to AGND, the polarity flipper bit is used. Set the POL bit in the ADC register. The ADC is now setup with AIN2 as its positive input and AGND as its negative input.

Step 8. Measure V_R1 using the ADC

To start the ADC conversion, set the STRT bit in the ADC register. The ADC will do a conversion and the result will be in the DATA register. Read the DATA register value and save as a 16-bit integer named V_R1 for later calculation.

Step 9. Set the Current Source for I₂ (60µA)

Set the current source for I₂ by setting the IVAL[1:0] bits to 0x01 in the TEMP_CTRL register.

Step 10. Set the ADC Input for AIN1 to AIN2

Set the polarity flipper back to normal by clearing the POL bit in the ADC register. Set the ADC positive input multiplexer for AIN1 by setting MUXP[3:0] to 0x00 the MUX register. Set the ADC negative multiplexer for AIN2 by setting MUXN[3:0] to 0x07 the MUX register.

Step 11. Measure V_BE2 using the ADC

The V_BE2 voltage is measured from the AIN1 to the AIN2 inputs to the ADC. The ADC is already configured and only needs to convert to get the resulting V_BE2 voltage. To start the ADC conversion, set the STRT bit in the ADC register. The ADC will do a conversion and the result will be in the DATA register. Read the DATA register value and save as a 16-bit integer named V_BE2 for later calculation.

Step 12. Set the ADC Input for V_R2

Set the ADC positive input multiplexer for AGND by setting MUXP[3:0] to 0x09 the MUX register. Set the ADC negative multiplexer for AIN2 by setting MUXN[3:0] to 0x07 the MUX register. To measure the AIN2 input relative to AGND, the polarity flipper bit is used. Set the POL bit in the ADC register. The ADC is now setup with AIN2 as its positive input and AGND as its negative input.

Step 13. Measure V_R2 Using the ADC

To start the ADC conversion, set the STRT bit in the ADC register. The ADC will do a conversion and the result will be in the DATA register. Read the DATA register value and save as a 16-bit integer named V_R2 for later calculation.

Step 14. Set the Current Source for I₃ (64µA)

Set the current source for I₃ by setting the IVAL[1:0] bits to 0x10 in the TEMP_CTRL register.

Step 15. Set the ADC Input for AIN1 to AIN2

Set the polarity flipper back to normal by clearing the POL bit in the ADC register. Set the ADC positive input multiplexer for AIN1 by setting MUXP[3:0] to 0x00 the MUX register. Set the ADC negative multiplexer for AIN2 by setting MUXN[3:0] to 0x07 the MUX register.

Step 16. Measure V_BE3 using the ADC

The V_BE3

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