Hi,
I want to buy boards from china for cheap, to not spend at least $50 on interface for dynamic microphone which is XM8500.
I know I need to buy AMP and ADC, but IDK what output power should the AMP have.
Here's few things I've found (I was looking for headphone and microphone AMPs, so they don't have a lot of power, but IDK how much is required for ADC, I thought is should be something around this)
AMP:
I want to buy boards from china for cheap, to not spend at least $50 on interface for dynamic microphone which is XM8500.
I know I need to buy AMP and ADC, but IDK what output power should the AMP have.
Here's few things I've found (I was looking for headphone and microphone AMPs, so they don't have a lot of power, but IDK how much is required for ADC, I thought is should be something around this)
AMP:
LM386 2x NE5532 NE5532 or AD828 MAX4410
ADC:PCM1808 ADS1015 or ADS1115 ADS1115
Can any of those be reasonably paired?
Thank you for answers in advance.
I just want to amplify and digitalize microphones signal with low SNR, flat FR, and decent sound quality in general. I don't know to what power the amp should amplify in this case, so how to choose amp.
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Taking the PCM1808 as an example, the input impedance is stated as 60K, which should pose no problem even for a TLO71. Input capacitance is not specified, but I don't think it is out of the ordinary otherwise it would be mentioned somewhere
You don't care about power, only about voltage or current, and it all depends on the ADC's input characteristics, which aren't specified in English.
A programmable gain amplifier (PGA) is implemented before the ΔΣ ADC of the ADS1114 and ADS1115. The full-scale range is configured by bits PGA[2:0] in the Config register and can be set to ±6.144 V, ±4.096 V, ±2.048 V, ±1.024 V, ±0.512 V, ±0.256
ADS1115 datasheet:
https://www.ti.com/lit/ds/symlink/ads1115.pdf
ADS1115 datasheet:
https://www.ti.com/lit/ds/symlink/ads1115.pdf