at83c5132 ATMEL Corporation, at83c5132 Datasheet - Page 30

• Manufacturer Part Number: at83c5132
• Description: Usb Microcontroller With 64k Bytes Flash Memory
• Manufacturer: ATMEL Corporation

Analog to Digital Converter
Definition of Symbols
Characteristics
Waveforms
Figure 12. Analog-to-Digital Converter Internal Waveforms
34
AT89C5132
ADSST Bit
ADEN Bit
CLK
T
EHSH
Table 13. Analog to Digital Converter Timing Symbol Definitions
Table 2. Analog to Digital Converter AC Characteristics
V
Notes:
T
T
T
DLe
ILe
OSe
Ge
DD
CLCL
EHSH
SHSL
= 2.7 to 3.3 V, T
Symbol
T
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
C
E
S
CLCL
ideal step width (see Figure 23).
and the ideal transfer curve after appropriate adjustment of gain and offset errors
(see Figure 23).
actual transfer curve (after removing of gain error), and the straight line which fits the
ideal transfer curve (see Figure 23).
the actual transfer curve (after removing of offset error), and the straight line which
fits the ideal transfer curve (see Figure 23).
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
= -40 to +85°C
= 3.0 V, AV
(1)(5)
(1)(4)
(1)(2)
T
(1)(3)
SHSL
SS
= AV
REFN
Min
4
= 0 V. ADC is monotonic with no missing code.
11·T
Max
4
1
2
4
4
H
L
CLCL
Conditions
High
Low
4173CS–USB–07/04
Unit
LSB
LSB
LSB
LSB
µs
µs
µs