Rainbow Electronics ATmega32L - Manual (Page 290)

290
ATmega32(L)
2503C–AVR–10/02
ADC Characteristics – Preliminary Data
Table 122. ADC Characteristics
Symbol Parameter Condition Min Typ Max Units
Resolution
Single Ended Conversion 10 Bits
Differential Conversion
Gain = 1x or 20x
8 Bits
Differential Conversion
Gain = 200x
7 Bits
Absolute Accuracy (Including INL, DNL,
Quantization Error, Gain, and Offset Error)
Single Ended Conversion
V
REF
= 4V, VCC = 4V
ADC clock = 200 kHz
1.5 1.5 LSB
Single Ended Conversion
V
REF
= 4V, VCC = 4V
ADC clock = 1 MHz
3.5 3.5 LSB
Single Ended Conversion
V
REF
= 4V, VCC = 4V
ADC clock = 200 kHz
Noise Reduction mode
1.5 LSB
Single Ended Conversion
V
REF
= 4V, VCC = 4V
ADC clock = 1 MHz
Noise Reduction mode
3.5 LSB
Integral Non-linearity (INL)
Single Ended Conversion
V
REF
= 4V, VCC = 4V
ADC clock = 200 kHz
0.5 LSB
Differential Non-linearity (DNL)
Single Ended Conversion
V
REF
= 4V, VCC = 4V
ADC clock = 200 kHz
0.5 LSB
Gain Error
Single Ended Conversion
V
REF
= 4V, VCC = 4V
ADC clock = 200 kHz
0.5 LSB
Offset Error
Single Ended Conversion
V
REF
= 4V, VCC = 4V
ADC clock = 200 kHz
0.5 LSB
Conversion Time Free Running Conversion 13 260 µs
Clock Frequency 0.05 1 MHz
AVCC Analog Supply Voltage V
CC
- 0.3 (1) V
CC
+ 0.3
(2)
V
V
REF
Reference Voltage
Single Ended Conversion 2.0 AVCC V
Differential Conversion 2.0 AVCC - 0.2 V
V
IN
Input voltage
Single ended channels GND V
REF
V
Differential channels 0 V
REF
V
Input bandwidth
Single ended channels 38.5 kHz
Differential channels 4 kHz