ATtiny24A/44ATable 2-6. ADC Characteristics, Differential Channels (Unipolar Mode), T = -40°C to +105°C A SymbolParameterConditionMinTypMaxUnits Gain = 1x 10 Bits Resolution Gain = 20x 10 Bits Gain = 1x VREF = 4V, VCC = 5V 10 LSB Absolute accuracy ADC clock = 50 - 200 kHz (Including INL, DNL, and Quantization, Gain and Offset Errors) Gain = 20x VREF = 4V, VCC = 5V 15 LSB ADC clock = 50 - 200 kHz Gain = 1x VREF = 4V, VCC = 5V 4 LSB Integral Non-Linearity (INL) ADC clock = 50 - 200 kHz (Accuracy after Offset and Gain Calibration) Gain = 20x VREF = 4V, VCC = 5V 10 LSB ADC clock = 50 - 200 kHz Gain = 1x 10 LSB Gain Error Gain = 20x 15 LSB Gain = 1x V = 4V, V = 5V 3 LSB REF CC ADC clock = 50 - 200 kHz Offset Error Gain = 20x V = 4V, V = 5V 4 LSB REF CC ADC clock = 50 - 200 kHz Conversion Time Free Running Conversion 70 280 µs Clock Frequency 50 200 kHz VIN Input Voltage GND VCC V V Input Differential Voltage V /Gain V DIFF REF Input Bandwidth 4 kHz AREF External Reference Voltage 2.0 VCC - 1.0 V V Internal Voltage Reference 1.0 1.1 1.2 V INT R Reference Input Resistance 32 kΩ REF RAIN Analog Input Resistance 100 MΩ ADC Conversion Output 0 1023 LSB 7 8183D-Appendix A–AVR–08/11 Document Outline Appendix A – ATtiny24A/44A Specification at 105°C 1. Memories 1.1 EEPROM Data Memory 2. Electrical Characteristics 2.1 Absolute Maximum Ratings* 2.2 DC Characteristics 2.3 Speed 2.4 Clock Characteristics 2.4.1 Accuracy of Calibrated Internal Oscillator 2.5 System and Reset Characteristics 2.5.1 Power-On Reset 2.6 Analog Comparator Characteristics 2.7 ADC Characteristics 2.8 Serial Programming Characteristics 3. Typical Characteristics 3.1 ATtiny24A 3.1.1 Current Consumption in Active Mode 3.1.2 Current Consumption in Idle Mode 3.1.3 Current Consumption of Standby Supply 3.1.4 Current Consumption in Power-down Mode 3.1.5 Current Consumption of Peripheral Units 3.1.6 Pull-up Resistors 3.1.7 Output Driver Strength 3.1.8 Input Threshold and Hysteresis (for I/O Ports) 3.1.9 BOD and Bandgap 3.1.10 Analog Comparator Offset 3.1.11 Internal Oscillator Speed 3.2 ATtiny44A 3.2.1 Current Consumption in Active Mode 3.2.2 Current Consumption in Idle Mode 3.2.3 Current Consumption of Standby Supply 3.2.4 Current Consumption in Power-down Supply Mode 3.2.5 Current Consumption of Peripheral Units 3.2.6 Pull-up Resistors 3.2.7 Output Driver Strength 3.2.8 Input Threshold and Hysteresis (for I/O Ports) 3.2.9 BOD and Bandgap and Reset 3.2.10 Analog Comparator Offset 3.2.11 Internal Oscillator Speed 4. Ordering Information 4.1 ATtiny24A 4.2 ATtiny44A 5. Revision History