Datasheet

68
8068U–AVR–06/2013
XMEGA A3
Not recommended for new designs -
Use XMEGA A3U series
34.6 DAC Characteristics
34.7 Analog Comparator Characteristics
34.8 Bandgap Characteristics
Table 34-7. DAC Characteristics
Symbol Parameter Condition Min Typ Max Units
INL Integral Non-Linearity V
CC
= 1.6-3.6V VREF = Ext. ref 5
LSB
DNL Differential Non-Linearity V
CC
= 1.6-3.6V
VREF = Ext. ref <±1
VREF= AV
CC
F
clk
Conversion rate 1000 ksps
AREF External reference voltage 1.1 AV
CC
-0.6 V
Reference input impedance >10 M

Max output voltage R
load
=100k
AV
CC
*0.98
V
Min output voltage R
load
=100k 0.015
Offset factory calibration accuracy
Continues mode, V
CC
=3.0V,
VREF = Int 1.00V, T=85°C
±0.5
LSB
Gain factory calibration accuracy
±2.5
Table 34-8. Analog Comparator Characteristics
Symbol Parameter Condition Min Typ Max Units
V
off
Input Offset Voltage V
CC
= 1.6 - 3.6V <±10 mV
I
lk
Input Leakage Current V
CC
= 1.6 - 3.6V < 1000 pA
V
hys1
Hysteresis, No V
CC
= 1.6 - 3.6V 0
mVV
hys2
Hysteresis, Small V
CC
= 1.6 - 3.6V mode = HS 20
V
hys3
Hysteresis, Large V
CC
= 1.6 - 3.6V mode = HS 40
t
delay
Propagation delay
V
CC
= 3.0V, T= 85°C mode = HS 100
nsV
CC
= 1.6 - 3.6V mode = HS 110
V
CC
= 1.6 - 3.6V mode = LP 175
Table 34-9. Bandgap Voltage Characteristics
Symbol Parameter Condition Min Typ Max Units
Bandgap startup time
As reference for ADC or DAC 1 Clk_PER + 2.5µs
µs
As input to AC or ADC 1.5
Bandgap voltage 1.1
V
INT1V Internal 1.00V reference T= 85°C, After calibration 0.99 1 1.01
Variation over voltage and temperature V
CC
= 1.6 - 3.6V, T = -40C to 85C±2 %