Rainbow-electronics ATmega32L Instrukcja Użytkownika Pobierz pdf (Strona 290)

290

ATmega32(L)

2503C–AVR–10/02

ADC Characteristics – Preliminary Data

Table 122. ADC Characteristics

Symbol Parameter Condition Min Typ Max Units

Resolution

Single Ended Conversion 10 Bits

Differential Conversion

Gain = 1x or 20x

8Bits

Differential Conversion

Gain = 200x

7Bits

Absolute Accuracy (Including INL, DNL,

Quantization Error, Gain, and Offset Error)

Single Ended Conversion

REF

= 4V, VCC = 4V

ADC clock = 200 kHz

1.5 1.5 LSB

Single Ended Conversion

REF

= 4V, VCC = 4V

ADC clock = 1 MHz

3.5 3.5 LSB

Single Ended Conversion

REF

= 4V, VCC = 4V

ADC clock = 200 kHz

Noise Reduction mode

1.5 LSB

Single Ended Conversion

REF

= 4V, VCC = 4V

ADC clock = 1 MHz

Noise Reduction mode

3.5 LSB

Integral Non-linearity (INL)

Single Ended Conversion

REF

= 4V, VCC = 4V

ADC clock = 200 kHz

0.5 LSB

Differential Non-linearity (DNL)

Single Ended Conversion

REF

= 4V, VCC = 4V

ADC clock = 200 kHz

0.5 LSB

Gain Error

Single Ended Conversion

REF

= 4V, VCC = 4V

ADC clock = 200 kHz

0.5 LSB

Offset Error

Single Ended Conversion

REF

= 4V, VCC = 4V

ADC clock = 200 kHz

0.5 LSB

Conversion Time Free Running Conversion 13 260 µs

Clock Frequency 0.05 1 MHz

AVCC Analog Supply Voltage V

- 0.3

(1)

+ 0.3

(2)

REF

Reference Voltage

Single Ended Conversion 2.0 AVCC V

Differential Conversion 2.0 AVCC

- 0.2 V

Input voltage

Single ended channels GND V

REF

Differential channels 0 V

REF

Input bandwidth

Single ended channels 38.5 kHz

Differential channels 4 kHz

1 2 ... 285 286 287 288 289 290 291 292 293 294 295 ... 312 313

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