ATXMEGA32D4-CU View Datasheet(PDF) - Atmel Corporation

Part Name

Description

Manufacturer

ATXMEGA32D4-CU

8/16-bit Atmel XMEGA D4 Microcontroller

Atmel Corporation 

XMEGA D4

32.6 ADC characteristics

Table 32-8. Power supply, reference and input range.

Symbol Parameter

Condition

AVCC

VREF

Rin

Csample

RAREF

CAREF

VIN

Analog supply voltage

Reference voltage

Input resistance

Input capacitance

Reference input resistance

Reference input capacitance

Input range

Conversion range

Switched

Switched

(leakage only)

Static load

Differential mode, Vinp - Vinn

VIN

Conversion range

ΔV

Fixed offset voltage

Single ended unsigned mode, Vinp

Min.

VCC- 0.3

1

-0.1

-VREF

-ΔV

Typ.

4.0

4.4

>10

7

190

Max.

VCC+ 0.3

AVCC- 0.6

AVCC+0.1

VREF

VREF-ΔV

Units

V

kΩ

pF

MΩ

pF

V

LSB

Table 32-9. Clock and timing.

Symbol Parameter

ClkADC ADC Clock frequency

fADC

Sample rate

Sampling Time

Conversion time (latency)

Start-up time

ADC settling time

Condition

Maximum is 1/4 of Peripheral clock

frequency

Measuring internal signals

Current limitation (CURRLIMIT) off

CURRLIMIT = LOW

CURRLIMIT = MEDIUM

CURRLIMIT = HIGH

1/2 ClkADC cycle

(RES+2)/2+GAIN

RES = 8 or 12, GAIN = 0, 1, 2, or 3

ADC clock cycles

After changing reference or input mode

After ADC flush

Min.

100

100

14

14

14

14

0.25

5

Typ.

7

12

7

1

Max.

1400

125

200

150

100

50

5

10

24

7

1

Units

kHz

ksps

µs

ClkADC

cycles

ClkADC

cycles

Table 32-10. Accuracy characteristics.

Symbol Parameter

Condition (2)

RES

Resolution

Programmable to 8 or 12 bit

INL (1) Integral non-linearity

DNL (1) Differential non-linearity

50ksps

VCC-1.0V < VREF < VCC-0.6V

All VREF

200ksps

VCC-1.0V < VREF < VCC-0.6V

All VREF

guaranteed monotonic

Min.

8

Typ.

12

±1.2

±1.5

±1.0

±1.5

<±0.8

Max.

12

±3

±4

±3

±4

<±1

Units

Bits

lsb

70

8135L–AVR–06/12

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