Operating conditions:
- VDD = 1.8 to 5.5V
- Temperature = -40°C to 125°C
- DUTYCYC = 25%
- CLKADC = 13 *
fADC
- SAMPCAP is 5 pF
The accuracy characteristics numbers are based on the characterization of the
following input reference levels and V
DD ranges:
- VREF = 1.8V,
VDD = 1.8 to 5.5V
- VREF = 2.6V,
VDD = 2.7 to 5.5V
- VREF = 4.096V,
VDD = 4.5 to 5.5V
- VREF = 4.3V,
VDD = 4.5 to 5.5V
Table 1. ADC Accuracy Characteristics
External Reference(2)
| Symbol |
Description |
Conditions |
Min. |
Typ. |
Max. |
Unit |
| Res |
Resolution |
|
|
- |
10 |
- |
bit |
| INL |
Integral Non-linearity |
|
fADC = 15 ksps |
- |
0.9 |
3.5 |
LSB |
| |
fADC = 77 ksps |
- |
0.9 |
3.5 |
| fADC = 115 ksps |
- |
1.2 |
3.5 |
| DNL(1) |
Differential Non-linearity |
|
fADC = 15 ksps |
- |
0.2 |
1.0 |
LSB |
| |
fADC = 77 ksps |
- |
0.4 |
1.0 |
| |
fADC = 115 ksps |
- |
0.8 |
2.0 |
| EABS |
Absolute accuracy |
|
fADC = 15 ksps |
- |
2 |
5 |
LSB |
| fADC = 77 ksps |
- |
2 |
5 |
| fADC = 115 ksps |
- |
2 |
5 |
| EGAIN |
Gain error |
|
fADC = 15 ksps |
-1 |
2 |
4 |
LSB |
| fADC = 77 ksps |
-1 |
2 |
4 |
| fADC = 115 ksps |
-1 |
2 |
4 |
| EOFF |
Offset error |
|
|
-4 |
-0.5 |
2 |
LSB |
Notes:
- 1.A DNL error of less than or equal
to 1 LSB ensures a monotonic transfer function with no missing codes.
- 2.These parameters are for design
guidance only. Not production tested.