I believe the bandgap reference in the tiny26 is plenty stable, but uncalibrated. In a production environment it might be cheaper to calibrate the unit rather than paying for a high accuracy external trimmed unit. -----Original Message----- From: Dave VanHorn On the tiny-26, I got Vref values of 2.7V. Not very encouraging. We used an external ref.
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RE: [AVR-Chat] ADC accuracy in ATmega8535
2004-11-03 by Larry Barello