Atmel AVR XMEGA 8/16-bit High Performance Low Power Flash Microcontrollers Ficha Técnica Página 77

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XMEGA E5 [DATASHEET]
Atmel-8153J–AVR-ATxmega8E5-ATxmega16E5-ATxmega32E5_Datasheet–11/2014
Table 36-8. Clock and Timing
Table 36-9. Accuracy Characteristics
Vin Input range 0 V
REF
VVin Conversion range Differential mode, Vinp - Vinn -0.95*V
REF
0.95*V
REF
Vin Conversion range Single ended unsigned mode, Vinp -0.05*V
REF
0.95*V
REF
Symbol Parameter Condition Min. Typ. Max. Units
Clk
ADC
ADC Clock frequency
Maximum is 1/4 of Peripheral clock
frequency
100 1800
kHz
Measuring internal signals 125
f
ClkADC
Sample rate 16 300
ksps
f
ADC
Sample rate
Current limitation (CURRLIMIT) off 16 300
CURRLIMIT = LOW 250
CURRLIMIT = MEDIUM 150
CURRLIMIT = HIGH 50
Sampling Time 1/2 Clk
ADC
cycle 0.25 5 µs
Conversion time (latency)
(RES+2)/2+(GAIN !=0)
RES (Resolution) = 8 or 12
6 10
Clk
ADC
cycles
Start-up time ADC clock cycles 12 24
ADC settling time
After changing reference or input
mode
7 7
Symbol Parameter Condition Min. Typ. Max. Units
Symbol Parameter Condition
(2)
Min. Typ. Max. Units
RES Resolution 12-bit resolution
Differential 8 12 12
BitsSingle ended signed 7 11 11
Single ended unsigned 8 12 12
INL
(1)
Integral non-linearity
Differential
mode
16ksps, V
REF
= 3V 1
lsb
16ksps, V
REF
= 1V 2
300ksps, V
REF
= 3V 1
300ksps, V
REF
= 1V 2
Single ended
unsigned mode
16ksps, V
REF
= 3.0V 1 1.5
16ksps, V
REF
= 1.0V 2 3
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