ATmega16 datasheet(291/315 Pages) ATMEL

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291

ATmega16(L)

2466E–AVR–10/02

ADC Characteristics – Preliminary Data

Table 121. ADC Characteristics

Symbol

Parameter

Condition

Min

Typ

Max

Units

Resolution

Single Ended Conversion

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

2.5

LSB

Single Ended Conversion

REF = 4V, VCC = 4V

ADC clock = 1 MHz

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

3LSB

Integral Non-linearity (INL)

Single Ended Conversion

VREF = 4V, VCC = 4V

ADC clock = 200 kHz

1LSB

Differential Non-linearity (DNL)

Single Ended Conversion

VREF = 4V, VCC = 4V

ADC clock = 200 kHz

0.5

LSB

Gain Error

Single Ended Conversion

VREF = 4V, VCC = 4V

ADC clock = 200 kHz

1LSB

Offset Error

Single Ended Conversion

VREF = 4V, VCC = 4V

ADC clock = 200 kHz

LSB

Conversion Time

Free Running Conversion

260

µs

Clock Frequency

0.05

MHz

AVCC

Analog Supply Voltage

CC - 0.3

(1)

CC + 0.3

(2)

VREF

Reference Voltage

Single Ended Conversion

2.0

AVCC

Differential Conversion

2.0

AVCC

- 0.2

Input voltage

Single ended channels

GND

VREF

Differential channels

VREF

Input bandwidth

Single ended channels

38.5

kHz

Differential channels

kHz

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