Rainbow-electronics ATmega3290P_V Manual de usuario descargar pdf (Pagina 318)

318

ATmega329/3290/649/6490

2552H–AVR–11/06

ADC Characteristics – Preliminary Data

Table 141. ADC Characteristics

Symbol Parameter Condition Min Typ Max Units

Resolution

Single Ended Conversion 10 Bits

Differential Conversion 8 Bits

Absolute accuracy (Including

INL, DNL, quantization error,

gain and offset error)

Single Ended Conversion

REF

= 4V, V

= 4V,

ADC clock = 200 kHz

22.5LSB

Single Ended Conversion

REF

= 4V, V

= 4V,

ADC clock = 1 MHz

4.5 LSB

Single Ended Conversion

REF

= 4V, V

= 4V,

ADC clock = 200 kHz

Noise Reduction Mode

2LSB

Single Ended Conversion

REF

= 4V, V

= 4V,

ADC clock = 1 MHz

Noise Reduction Mode

4.5 LSB

Integral Non-Linearity (INL)

Single Ended Conversion

REF

= 4V, V

= 4V,

ADC clock = 200 kHz

0.5 LSB

Differential Non-Linearity (DNL)

Single Ended Conversion

REF

= 4V, V

= 4V,

ADC clock = 200 kHz

0.25 LSB

Gain Error

Single Ended Conversion

REF

= 4V, V

= 4V,

ADC clock = 200 kHz

2LSB

Offset Error

Single Ended Conversion

REF

= 4V, V

= 4V,

ADC clock = 200 kHz

2LSB

Conversion Time Free Running Conversion 13 260 µs

Clock Frequency Single Ended Conversion 50 1000 kHz

AVCC Analog Supply Voltage V

- 0.3 V

+ 0.3 V

REF

Reference Voltage

Single Ended Conversion 1.0 AVCC V

Differential Conversion 1.0 AVCC - 0.5 V

Pin Input Voltage

Single Ended Channels GND V

REF

Differential Channels GND AVCC V

Input Range

Single Ended Channels GND V

REF

Differential Channels

(1)

-0.85V

REF

Input Bandwidth

Single Ended Channels 38.5 kHz

Differential Channels 4 kHz

1 2 ... 313 314 315 316 317 318 319 320 321 322 323 ... 374 375

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