AT83C51SND1C_03 ATMEL [ATMEL Corporation], AT83C51SND1C_03 Datasheet - Page 197

• Manufacturer Part Number: AT83C51SND1C_03
• Description: Single-Chip Flash Microcontroller with MP3 Decoder and Human Interface
• Manufacturer: ATMEL [ATMEL Corporation]

Analog to Digital Converter
Definition of symbols
Characteristics
Waveforms
4109E–8051–06/03
ADSST Bit
ADEN Bit
CLK
Table 172. Analog to Digital Converter Timing Symbol Definitions
Table 173. Analog to Digital Converter AC Characteristics
V
Notes:
Figure 153. Analog to Digital Converter Internal Waveforms
C
E
S
T
T
T
DLe
ILe
OSe
Ge
DD
CLCL
EHSH
SHSL
= 2.7 to 3.3 V, T
Symbol
1. AV
2. The differential non-linearity is the difference between the actual step width and the
3. The integral non-linearity is the peak difference between the center of the actual step
4. The offset error is the absolute difference between the straight line which fits the
5. The gain error is the relative difference in percent between the straight line which fits
T
EHSH
ideal step width (see Figure 154).
and the ideal transfer curve after appropriate adjustment of gain and offset errors
(see Figure 154).
actual transfer curve (after removing of gain error), and the straight line which fits the
ideal transfer curve (see Figure 154).
the actual transfer curve (after removing of offset error), and the straight line which
fits the ideal transfer curve (see Figure 154).
DD
Signals
= AV
Clock
Enable (ADEN bit)
Start Conversion
(ADSST bit)
Clock Period
Start-up Time
Conversion Time
Differential non-
linearity error
Integral non-
linearity errorss
Offset error
Gain error
REFP
A
Parameter
T
= -40 to +85°C
CLCL
= 3.0 V, AV
(1)(5)
(1)(4)
(1)(2)
(1)(3)
SS
= AV
REFN
Min
T
4
SHSL
= 0 V. ADC is monotonic with no missing code.
H
L
AT8xC51SND1C
11·T
Max
4
1
2
4
4
CLCL
Conditions
High
Low
Unit
LSB
LSB
LSB
LSB
µs
µs
µs
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