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| ATMEGA128A_14 Datasheet, PDF (313/369 Pages) ATMEL Corporation – 8-bit Microcontroller with 128Kbytes | |||
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Table 27-8. ADC Characteristics, Differential Channels
Symbol Parameter
Condition
Gain = 1x
Resolution
Gain = 10x
Gain = 200x
Gain = 1x
VREF = 4V, VCC = 5V
ADC clock = 50 - 200kHz
Absolute Accuracy
Gain = 10x
VREF = 4V, VCC = 5V
ADC clock = 50 - 200kHz
Gain = 200x
VREF = 4V, VCC = 5V
ADC clock = 50 - 200kHz
Gain = 1x
VREF = 4V, VCC = 5V
ADC clock = 50 - 200kHz
Integral Non-Linearity (INL)
(Accuracy after Calibration for Offset and
Gain Error)
Gain = 10x
VREF = 4V, VCC = 5V
ADC clock = 50 - 200kHz
Gain = 200x
VREF = 4V, VCC = 5V
ADC clock = 50 - 200kHz
Gain = 1x
Gain Error
Gain = 10x
Gain = 200x
Gain = 1x
VREF = 4V, VCC = 5V
ADC clock = 50 - 200kHz
Offset Error
Gain = 10x
VREF = 4V, VCC = 5V
ADC clock = 50 - 200kHz
Gain = 200x
VREF = 4V, VCC = 5V
ADC clock = 50 - 200kHz
Clock Frequency
Conversion Time
AVCC
VREF
VIN
VDIFF
Analog Supply Voltage
Reference Voltage
Input Voltage
Input Differential Voltage
ADC Conversion Output
Input Bandwidth
Min(1)
Typ(1)
17
Max(1)
10
10
10
Units
Bits
Bits
Bits
LSB
17
LSB
7
LSB
1.5
LSB
2
LSB
5
LSB
1.5
%
1.5
%
0.5
%
2
LSB
3
LSB
4
LSB
50
200
kHz
65
VCC - 0.3(2)
2.0
GND
-VREF/Gain
-511
260
VCC + 0.3(3)
AVCC - 0.5
VCC
VREF/Gain
511
µs
V
V
V
V
LSB
4
kHz
ATmega 128A [DATASHEET]
Atmel-8151I-8-bit-AVR-ATmega128A_Datasheet-08/2014
313
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