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Feb 24, 2014
10:30 PM
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Feb 24, 2014
10:30 PM
Hi,
I am using TDA5235 receiver in my project.
My PCB is overheating due to other features/components.
I was to use temperature sensor integrated inside TDA5235.
Is it possible?
How accurate it is?
Are values of temperature stored inside some registers?
Can I read using SPI & do post processing of the temperature data?
Please let me know
Thanks
Abhishekabs
I am using TDA5235 receiver in my project.
My PCB is overheating due to other features/components.
I was to use temperature sensor integrated inside TDA5235.
Is it possible?
How accurate it is?
Are values of temperature stored inside some registers?
Can I read using SPI & do post processing of the temperature data?
Please let me know
Thanks
Abhishekabs
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1 Reply
Feb 26, 2014
02:16 AM
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Feb 26, 2014
02:16 AM
In front of the AD converter there is a multiplexer so that also temperature and VDDD can be measured. You may use it for measuring temperature of the chip estimating temperature on PCB. You should give it a try.
Accuracy is defined in datasheet, please see attached Picture:
Registers: The default value of the ADC-MUX is RSSI (register ADCINSEL: 000 for RSSI; 001 for Temperature; 010 for VDDD/2). Please refer to the datasheet's chapter 2.4.6.5 Analog to Digital Converter (ADC). Readout of the 10-bit ADC has to be done via ADCRESH register (the lower 2 bits in ADCRESL register can be inconsistent and should not be used).
Accuracy is defined in datasheet, please see attached Picture:
Registers: The default value of the ADC-MUX is RSSI (register ADCINSEL: 000 for RSSI; 001 for Temperature; 010 for VDDD/2). Please refer to the datasheet's chapter 2.4.6.5 Analog to Digital Converter (ADC). Readout of the 10-bit ADC has to be done via ADCRESH register (the lower 2 bits in ADCRESL register can be inconsistent and should not be used).