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Suggest me a device which shall be able to convert negative Analog voltage (0.0 to -3.3) to Digital with minimum 10/12 bit resolution.
Device shall be powered with 5V/3.3V DC or if -3.3V and max current of 20mA shall be tapped.
Above analog range is received from 10k pot.
In reply to Tom Hendrick:
Brief about the Application:
This is one of the outgoing signal from the Display Unit where -3.3V is given to the 10k pot with reference to the ground. The wiper output voltage need to be measured by the microcontroller to display the actual's. But we unable to measure the range (0 to -3.3V) using inverting amplifier. Instead of building a complicated circuit we planned to go for a negative input ADC. This is the application, therefore your inputs are always awaited.
In reply to Arunkumar Ramalingam:
Yes this model helps me.
Also simple inversion will increase one more ADC rather than negative reference ADC.
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