Rainbow-electronics ATmega163L Manual de usuario descargar pdf (Pagina 98)

ATmega163(L)

Figure 62. ADC Power Connections

Notes: 1. Values are guidelines only. Actual values are TBD.

2. Minimum for AV

is 2.7V.

3. Maximum for AV

is 5.5V.

GND

VCC

PA0 (ADC0)

PA1 (ADC1)

PA2 (ADC2)

PA3 (ADC3)

PA4 (ADC4)

PA5 (ADC5)

PA6 (ADC6)

PA7 (ADC7)

AREF

AVCC

AGND

PC7

10µΗ

100nF

Analog Ground Plane

ATmega163

43 4142 4044

ADC Characteristics - Preliminary Data

Symbol Parameter Condition Min

(1)

Typ

(1)

Max

(1)

Units

Resolution Single-ended Conversion 10 Bits

Absolute accuracy

REF

= 4V

ADC clock = 200 kHz

12LSB

Absolute accuracy

REF

= 4V

ADC clock = 1 MHz

4LSB

Absolute accuracy

REF

= 4V

ADC clock = 2 MHz

16 LSB

Integral Non-linearity V

REF

> 2V 0.5 LSB

Differential Non-linearity V

REF

> 2V 0.5 LSB

Zero Error (Offset) V

REF

> 2V 1 LSB

Conversion Time Free Running Conversion 65 260 µs

Clock Frequency 50 200 kHz

Analog Supply Voltage V

- 0.3

(2)

+ 0.3

(3)

REF

Reference Voltage 2 V AV

INT

Internal Voltage Reference 2.35 2.56 2.77 V

Bandgap Voltage Reference 1.12 1.22 1.32 V

REF

Reference Input Resistance 6 10 13 kΩ

Input Voltage AGND AREF V

AIN

Analog Input Resistance 100 MΩ

1 2 ... 93 94 95 96 97 98 99 100 101 102 103 ... 155 156

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Rainbow-electronics ATmega163L Manual de usuario Pagina 98

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