ATXMEGA256A3U Datasheet, PDF (70/116 Pages) ATMEL Corporation – 8/16-bit Atmel XMEGA A3U Microcontroller

XMEGA A3U
Table 35-5. ADC Characteristics (Continued)
Symbol Parameter
Condition⁽²⁾
External reference
Gain Error
Differential
mode
AVCC/1.6
AVCC/2.0
Bandgap
Temperature drift
Operating voltage drift
Min
Typ
Max
Units
-1
10
mV
8
±5
<0.02
mV/K
<0.5
mV/V
Notes: 1. Maximum numbers are based on characterisation and not tested in production, and valid for 5% to 95% input voltage range.
2. Unless otherwise noted all linearity, offset and gain error numbers are valid under the condition that external VREF is used.
Table 35-6. ADC Gain Stage Characteristics
Symbol
Rin
Cin
Parameter
Input resistance
Input capacitance
Signal range
Condition
Switched in normal mode
Switched in normal mode
Gain stage output
Propagation delay
ADC conversion rate
INL⁽¹⁾
DNL⁽¹⁾
Clock rate
Same as ADC
Integral Non-Linearity
500kSPS
Differential Non-Linearity
All gain settings
All gain setting, guaranteed
monotonic
1x gain, normal mode
Gain Error
8x gain, normal mode
64x gain, normal mode
Offset Error, input
refered
1x gain, normal mode
8x gain normal mode
64x gain normal mode
Min
Typ
Max
Units
4.0
kΩ
4.4
pF
0
V_CC- 0.6
V
1
Clk_ADC
cycles
100
1000
kHz
±2.0
±0.9
4
LSB
1.5
-0.8
-2.5
%
-3.5
-2
-5
mV
-4
Note: 1. Maximum numbers are based on characterisation and not tested in production, and valid for 5% to 95% input voltage range.
70
8386A–AVR–07/11