Abov A96G166 - 20.3-20.23 Electrical Performance Parameters

20. Electrical characteristics A96G166/A96A166/A96S166 User’s manual
202
20.3 A/D converter characteristics
Table 45. A/D Converter Characteristics
(T
A
=-40°C ~ +85°C or T
A
=-40°C ~ 105°C, VDD=2.2V ~ 5.5V, VSS=0V)
Parameter
Symbol
Conditions
MIN
TYP
MAX
Unit
Integral Linear Error
ILE
AVDD = 5.0V
MCLK = 8MHz
–
±4
±8
LSB
Differential Linearity
Error
DLE
–
±1
±2
Offset Error of Top
EOT
–
±4
±8
Offset Error of Bottom
EOB
–
±2
±4
Conversion time
t
CON
12-bit resolution, 8MHz
7.5
–
–
us
Analog input voltage
V
AN
–
VSS
–
VDD
V
Analog input leakage
Current
I
AN
VDDREF = 5.12V
–
1
2
uA
ADC operating current
I
ADC
Enable
VDD =
5.12V
–
1
2
mA
Disable
–
–
0.1
uA
NOTES:
1. When VDD is lower than 2.2V, the ADC resolution will get worse.
2. Zero offset error is the difference between 000000000000 and the converted output for zero input
voltage (VSS).
3. Full scale error is the difference between 111111111111 and the converted output for full-scale input
voltage (VDD).
4. If VDD is less than or equal to 2.2V, the resolution degrades by 1-bit whenever VDD drops 0.1V.
(@ADCLK = 0.5MHz, under 2.2V, resolution has no test.)
5. ADCLK must be less than 0.5MHz. Furthermore, if ADCLK is less than 0.125MHz, it can be improved
INL characteristic.
Table 46. Recommended ADC Resolution
(T
A
=-40°C ~ +85°C or T
A
=-40°C ~ 105°C, VDD=2.5V ~ 5.5V, VSS=0V)
VDD [V]
Resolution
Conditions
2.6
12-bit / Upper 12-bit
ADCLK ≤ 0.5MHz
2.5
12-bit / Upper 12-bit
2.4
12-bit / Upper 12-bit
2.3
12-bit / Upper 12-bit
2.2
11-bit / Upper 11-bit
2.1
10-bit / Upper 10-bit
2.0
9-bit / Upper 9-bit
1.9
8-bit / Upper 8-bit
1.8
7-bit / Upper 7-bit
NOTE: Guaranteed by design.