ATmega32(L)
ADC Characteristics
Table 121. ADC Characteristics, Single Ended channels, TA = -40°C to 85°C
Symbol Parameter
Condition
Min
Typ
Max
Units
Resolution
Single Ended Conversion
10
Bits
Single Ended Conversion
VREF = 4V, VCC = 4V
ADC clock = 200 kHz
1.5
3
LSB
LSB
Single Ended Conversion
VREF = 4V, VCC = 4V
ADC clock = 1 MHz
Absolute Accuracy (Including INL, DNL,
Quantization Error, Gain, and Offset Error)
Single Ended Conversion
VREF = 4V, VCC = 4V
1.5
3
LSB
LSB
ADC clock = 200 kHz
Noise Reduction mode
Single Ended Conversion
VREF = 4V, VCC = 4V
ADC clock = 1 MHz
Noise Reduction mode
Single Ended Conversion
VREF = 4V, VCC = 4V
ADC clock = 200 kHz
Integral Non-Linearity (INL)
Differential Non-linearity (DNL)
Gain Error
0.75
0.25
0.75
0.75
LSB
LSB
LSB
LSB
Single Ended Conversion
VREF = 4V, VCC = 4V
ADC clock = 200 kHz
Single Ended Conversion
VREF = 4V, VCC = 4V
ADC clock = 200 kHz
Single Ended Conversion
Offset Error
VREF = 4V, VCC = 4V
ADC clock = 200 kHz
Clock Frequency
50
13
1000
260
kHz
µs
Conversion Time
AVCC
VREF
VIN
Analog Supply Voltage
Reference Voltage
VCC - 0.3(1)
VCC + 0.3(2)
AVCC
VREF
V
2.0
V
Input voltage
GND
0
V
ADC conversion output
Input bandwith
1023
LSB
kHz
V
38.5
2.56
32
VINT
Internal Voltage Reference
Reference Input Resistance
Analog Input Resistance
2.3
2.7
RREF
RAIN
kΩ
MΩ
100
Notes: 1. Minimum for AVCC is 2.7V.
2. Maximum for AVCC is 5.5V.
293
2503J–AVR–10/06
ATMEL [ ATMEL ]
