For the ads1015 and 1115 the conversion delays are
-----------------------------------------------------------------------*/
#define ADS1015_CONVERSIONDELAY (1)
#define ADS1115_CONVERSIONDELAY (8)
/*=========================================================================*/
This is from the library code which I am studying so I understand the operations properly.
Where in the Texas instrument PDF is this mentioned?
http://www.adafruit.com/datasheets/ads1115.pdf
Conversion delay
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adafruit_support_mike
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Re: Conversion delay
Those are derived values.
The ADS1x15 family of ADCs have an ALERT/READY pin that generates a pulse when each conversion is complete, but using that consumes a microcontroller pin and an interrupt service routine. Instead of using that, we wrote the library to wait for a fixed amount of time for the conversion to finish.
The ADS1015's maximum sampling rate is 3ksps, so a 1ms delay (corresponding to a rate of 1ksps) strikes a balance between simplicity and guaranteed success of getting a conversion. The ADS1115 can do 860sps, and our default delay takes the rate to 125sps.
The ADS1x15 family of ADCs have an ALERT/READY pin that generates a pulse when each conversion is complete, but using that consumes a microcontroller pin and an interrupt service routine. Instead of using that, we wrote the library to wait for a fixed amount of time for the conversion to finish.
The ADS1015's maximum sampling rate is 3ksps, so a 1ms delay (corresponding to a rate of 1ksps) strikes a balance between simplicity and guaranteed success of getting a conversion. The ADS1115 can do 860sps, and our default delay takes the rate to 125sps.
Please be positive and constructive with your questions and comments.