AD7452 Analog Devices, AD7452 Datasheet - Page 11

• Manufacturer Part Number: AD7452
• Description: Differential Input, 555 kSPS, 12-Bit A/D Converter in 8-Lead SOT-23
• Manufacturer: Analog Devices

Specifications of AD7452

• Resolution (bits): 12bit
• # Chan: 1
• Sample Rate: 555kSPS
• Interface: Ser,SPI
• Analog Input Type: Diff-Uni
• Ain Range: (2Vref) p-p
• Adc Architecture: SAR
• Pkg Type: SOT

–0.5
–1.0
–0.5
–1.0
3.0
2.5
2.0
1.5
1.0
0.5
2.5
2.0
1.5
1.0
0.5
–1
–2
–3
–4
–5
0
0
5
4
3
2
1
0
0
0
0
Figure 11. Change in DNL vs. V
Figure 12. Change in DNL vs. V
Figure 13. Change in INL vs. V
0.5
0.5
0.5
1.0
1.0
1.0
1.5
1.5
POSITIVE DNL
V
V
V
NEGATIVE DNL
REF
REF
REF
(V)
(V)
(V)
2.0
2.0
1.5
POSITIVE DNL
REF
NEGATIVE DNL
REF
REF
POSITIVE INL
NEGATIVE INL
for V
for V
for V
2.5
2.5
DD
DD
DD
= 5 V
= 5 V
= 3 V
2.0
3.0
3.0
2.2
3.5
2.5
3.5
Rev. B | Page 11 of 28
Figure 15. Change in Zero-Code Error vs. Reference Voltage V
Figure 16. Change in ENOB vs. Reference Voltage V
–0.5
–1.5
–2.0
12.0
11.5
11.0
10.5
10.0
2.0
1.5
1.0
0.5
9.5
9.0
8.5
8.0
7.5
7.0
8
7
6
5
4
3
2
1
0
0
0
0
0
V
DD
Figure 14. Change in INL vs. V
V
= 3V
DD
V
0.5
0.5
DD
= 3V
0.5
= 5V
V
DD
= 5V
1.0
1.0
1.0
1.5
1.5
V
V
V
REF
REF
REF
POSITIVE INL
NEGATIVE INL
(V)
(V)
(V)
2.0
2.0
1.5
REF
for V
2.5
2.5
DD
= 3 V
DD
2.0
= 5 V and 3 V
3.0
3.0
DD
2.2
AD7452
= 5 V and 3 V
2.5
3.5
3.5