Contents
What is ADC main specification?
ADC Basics, Part 5: Key ADC Specifications for System Analysis
- Basic transfer function.
- Full-scale-input-range.
- Number of bits.
- Analog and/or digital gain capability.
- Power consumption.
- Through-put timing.
- Output noise.
What is dynamic range in ADC?
The dynamic range is defined as the ratio between the largest and smallest values that the ADC can reliably measure. For an ADC, the dynamic range is related to the number of bits that are used to digitize the analog signal.
What are different ADC specs?
Like DAC, ADCs are also having many important specifications. Some of them are Resolution, Quantization error, Conversion time, Analog error, Linearity error, DNL error, INL error & Input voltage range.
When does the ADC module turn on and off?
GO/DONE is the A/D Conversion Status bit. Setting this bit initializes A/D Conversion and will be automatically cleared when the conversion is complete. ADON is used to switch on/off the ADC Module. When it is 1, the ADC Module turns ON and when it is 0, the ADC Module will be OFF.
Which is the select bit in ADC format?
ADFM is the ADC Result Format select bit. Two 8 bit register (ADRESH and ADRESL) are provided to store the 10-bit result of A/D Conversion, thus we need’t use 6 bits. When ADFM is 1, the result will be right justified, ie Most Significant Bits of ADRESH will be read as 0.
Where are the conversion results stored in ADC?
However, multiple conversion results can be stored in a DMA RAM buffer with no CPU overhead when DMA is used with the ADC module. Each conversion result is converted to one of four 16-bit output formats when it is read from the buffer. Note:This family reference manual section is meant to serve as a complement to device data sheets.
What is the reference voltage of an ADC converter?
You can use three sources of ADC reference voltage: The power supply. The internal reference diode (nominally 1.1V). An external voltage reference. The reference voltage is the full-scale voltage applied to the ADC converter operating as described above. Say you changed the Vref value to 1V then the minimum LSB you could detect would be 1/1024 or