ATmega32A Datasheet - Sunrom Technologies

ATmega32A27.8 ADC CharacteristicsTable 27-4. ADC Characteristics, Single Ended channels, T A = -40°C to 85°CSymbol Parameter Condition Min Typ Max UnitsResolution Single Ended Conversion 10 BitsSingle Ended ConversionV REF = 4V, V CC = 4VADC clock = 200kHz1.5 LSBAbsolute Accuracy (Including INL, DNL,Quantization Error, Gain, and Offset Error)Integral Non-Linearity (INL)Differential Non-linearity (DNL)Gain ErrorOffset ErrorNotes: 1. Minimum for AVCC is 2.7V.2. Maximum for AVCC is 5.5V.Single Ended ConversionV REF = 4V, V CC = 4VADC clock = 1MHzSingle Ended ConversionV REF = 4V, V CC = 4VADC clock = 200kHzNoise Reduction modeSingle Ended ConversionV REF = 4V, V CC = 4VADC clock = 1MHzNoise Reduction modeSingle Ended ConversionV REF = 4V, V CC = 4VADC clock = 200kHzSingle Ended ConversionV REF = 4V, V CC = 4VADC clock = 200kHzSingle Ended ConversionV REF = 4V, V CC = 4VADC clock = 200kHzSingle Ended ConversionV REF = 4V, V CC = 4VADC clock = 200kHz3 LSB1.5 LSB3 LSB0.75 LSB0.25 LSB0.75 LSB0.75 LSBClock Frequency 50 1000 kHzConversion Time 13 260 µsAVCC Analog Supply Voltage V CC - 0.3 (1) V CC + 0.3 (2) VV REF Reference Voltage 2.0 AVCC VV IN Input voltage GND V REF VADC conversion output 0 1023 LSBInput bandwith 38.5 kHzV INT Internal Voltage Reference 2.3 2.56 2.7 VR REF Reference Input Resistance 32 kΩR AIN Analog Input Resistance 100 MΩ8155C–AVR–02/11304