ATmega169P
27.7 ADC Characteristics – Preliminary Data
Table 27-4. ADC Characteristics
Symbol
Parameter
Condition
Min
Typ
10
8
Max
Units
Bits
Single Ended Conversion
Differential Conversion
Single Ended Conversion
Resolution
Bits
V
REF = 4V, VCC = 4V,
2
2.5
LSB
LSB
ADC clock = 200 kHz
Single Ended Conversion
VREF = 4V, VCC = 4V,
4.5
ADC clock = 1 MHz
Absolute accuracy
(Including INL, DNL,
quantization error, gain and
offset error)
Single Ended Conversion
VREF = 4V, VCC = 4V,
2
LSB
LSB
ADC clock = 200 kHz
Noise Reduction Mode
Single Ended Conversion
VREF = 4V, VCC = 4V,
4.5
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
0.5
0.25
2
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,
2
ADC clock = 200 kHz
Conversion Time
Free Running Conversion
Single Ended Conversion
13
50
260
1000
µs
kHz
V
Clock Frequency
AVCC
VREF
Analog Supply Voltage
V
CC - 0.3
1.0
VCC + 0.3
AVCC
Single Ended Conversion
Differential Conversion
Single ended channels
Differential Conversion
Single Ended Channels
Differential Channels
V
Reference Voltage
Input Voltage
1.0
AVCC - 0.5
V
GND
0
VREF
V
VIN
AVCC(1)
V
38,5
4
kHz
kHz
V
Input Bandwidth
VINT
RREF
RAIN
Internal Voltage Reference
Reference Input Resistance
Analog Input Resistance
1.0
1.1
32
1.2
kΩ
MΩ
100
Note:
1. VDIFF must be below VREF
333
8018A–AVR–03/06
ATMEL [ ATMEL ]
