Rainbow-electronics ATmega64L Manual do Utilizador descarregar pdf (Página 288)

288

ATmega16(L)

2466B–09/01

ADC Characteristics – Preliminary Data

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

2. Minimum for AV

is 2.7V.

3. Maximum for AV

is 5.5V.

Table 123. ADC Characteristics

Symbol Parameter Condition Min

(1)

Typ

(1)

Max

(1)

Units

Resolution Single Ended Conversion 10 Bits

Differential Conversion

Gain = 1x or 20x 8 Bits

Differential Conversion

Gain = 200x 7 Bits

Absolute accuracy

Single Ended Conversion

REF

= 4 V

ADC clock = 200 kHz

ADHSM = 0

1TBDLSB

Single Ended Conversion

REF

= 4V

ADC clock = 1 MHz

ADHSM = 1

TBD TBD LSB

Integral Non-Linearity V

REF

= 4 V 0.5 LSB

Differential Non-Linearity V

REF

= 4 V 0.5 LSB

Zero Error (Offset) V

REF

= 4 V 1 LSB

Conversion Time Free Running Conversion

ADHSM = 0

65 260 µs

Free Running Conversion

ADHSM = 1

65 TBD µs

Clock Frequency ADHSM = 0 50 200 kHz

ADHSM = 1 50 TBD kHz

Analog Supply Voltage V

- 0.3

(2)

+ 0.3

(3)

REF

Reference Voltage Single Ended Conversion 2.0 AV

Differential Conversion 2.0 AV

- 0.2 V

Input voltage Single ended channels GND V

REF

Differential channels TBD TBD

Input bandwidth Single ended channels TBD kHz

Differential channels 4 kHz

INT

Internal Voltage Reference TBD 2.56 TBD V

REF

Reference Input Resistance TBD TBD TBD kΩ

AIN

Analog Input Resistance TBD MΩ

HSM

Increased current consumption in High-

Speed Mode (ADHSM=1)

TBD µA

1 2 ... 283 284 285 286 287 288 289 290 291 292 293 ... 297 298

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