Rainbow Electronics ATmega8HVD - Manual (Page 147)

147
8052B–AVR–09/08
ATmega4HVD/8HVD
ADC Characteristics
Notes: 1. Values are guidelines only.
2. All characteristics contained in this data sheet are based on simulation and characterization of other AVR microcontrollers
manufactured in the same process technology. These values are preliminary values representing design targets, and will be
updated after characterization of actual silicon.
Table 26-7. ADC Characteristics (2) , T
A
= -20°C to 85°C, VFET = 2.4 to 4.2V (unless otherwise noted)
Symbol Parameter Condition Min (1) Typ (1) Max (1) Units
ADC
Resolution 10 Bits
Absolute Accuracy
(Including INL, DNL, Quantization Error, Gain
and Offset Error) VCELL > 1V LSB
Integral Non-Linearity (INL)
VCELL > 1V
V
CC
= 2.2V
ADC clock = 167 kHz
2 LSB
Differential Non-Linearity (DNL)
VCELL > 1V
V
CC
= 2.2V
ADC clock = 167 kHz
0.5 LSB
Gain Error
VCELL > 1V
V
CC
= 2.2V
ADC clock = 167 kHz
4 LSB
Offset error
VCELL > 1V
V
CC
= 2.2V
ADC clock = 167 kHz
2 LSB
PrescaledClock Frequency Fast RC Osc = 8 MHz 167 kHz
Conversion Time (VCELL, ADC0) ADC clock = 167 kHz 78 µs
Conversion Time (VTEMP) ADC clock = 167 kHz 163 µs
Input Voltage (VCELL) GND 5 V
Input Voltage ( ADC0) VCELL > 1V GND 1 V
Input Voltage ( VTEMP) VCELL > 1V GND 1 V
Input Bandwidth 7.5 kHz
Analog Input Resistance 100 M
Ω
Temp.
Sensor
V
PTAT
, Voltage Proportional to Absolute
Temperature
1.07 mV/K
Absolute Accuracy TBD K