Rainbow Electronics ATmega128L - Manual (Page 316)

316
ATmega128(L)
2467B–09/01
ADC Characteristics - Preliminary Data
Note: 1. Values are guidelines only. Actual values are TBD.
2. Minimum for AV
CC
is 2.7 V.
3. Maximum for AV
CC
is 5.5 V.
Table 137. 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
V
REF
= 4 V
ADC clock = 200 kHz
ADHSM = 0
1 TBD LSB
Single Ended Conversion
V
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
AV
CC
Analog Supply Voltage V
CC
- 0.3 (2) V
CC
+ 0.3
(3)
V
V
REF
Reference Voltage Single Ended Conversion 2.0 AV
CC
V
Differential Conversion 2.0 AV
CC
- 0.2 V
V
IN
Input voltage Single ended channels GND V
REF
Differential channels TBD TBD
Input bandwidth Single ended channels TBD kHz
Differential channels 4 kHz
V
INT
Internal Voltage Reference TBD 2.56 TBD V
R
REF
Reference Input Resistance TBD TBD TBD k Ω
R
AIN
Analog Input Resistance TBD M Ω
I
HSM
Increased current consumption
in High-Speed Mode
(ADHSM=1) TBD µA