AD7298-1 Analog Devices, AD7298-1 Datasheet - Page 9

• Manufacturer Part Number: AD7298-1
• Description: 8-Channel, 1 MSPS, 10-Bit SAR ADC
• Manufacturer: Analog Devices

Specifications of AD7298-1

• Resolution (bits): 10bit
• # Chan: 8
• Sample Rate: 1MSPS
• Interface: SPI
• Analog Input Type: SE-Uni
• Ain Range: Uni (Vref),Uni 1.0V,Uni 1.25,Uni 2.0V,Uni 2.5V
• Adc Architecture: SAR
• Pkg Type: CSP

TYPICAL PERFORMANCE CHARACTERISTICS
–100
–110
–10
–20
–30
–40
–50
–60
–70
–80
–90
–0.6
–0.8
–1.0
–0.4
–0.6
–0.8
–1.0
1.0
0.8
0.6
0.4
0.2
0.2
0.4
1.0
0.8
0.6
0.4
0.2
0.2
0
0
0
0
1
1
101
101
100
201
201
Figure 5. Typical ADC DNL
Figure 4. Typical ADC INL
301
301
Figure 3. Typical FFT
200
FREQUENCY (MHz)
401
401
CODE
501
300
CODE
501
601
601
V
f
f
f
SNR = 61.83dB
THD = –80.23dB
SAMPLE
IN
SCLK
400
DD
701
= 50kHz
701
= V
= 20MHz
DRIVE
= 1.17647MHz
801
801
500
V
V
V
DD
DRIVE
= 3V
DRIVE
901 1001
V
901 1001
= 3V
DD
= 3V
= 3V
= 3V
600
Rev. A | Page 9 of 24
–0.10
–0.20
–0.30
–0.40
–0.50
–0.10
–0.20
–0.30
–0.40
–0.50
0.50
0.40
0.30
0.20
0.10
0.50
0.40
0.30
0.20
0.10
11
10
9
8
7
6
5
4
3
2
0
0
0
1.0
1.0
1.2
1.2
Figure 8. Effective Number of Bits vs. V
0.5
EXTERNAL VOLTAGE REFERENCE (V)
1.4
1.4
Figure 7. DNL vs. V
Figure 6. INL vs. V
INL (Positive)
INL (Negative)
INL (Negative)
INL (Positive)
1.6
1.6
1.0
V
V
REF
REF
1.8
1.8
(V)
(V)
1.5
REF
2.0
2.0
REF
2.2
2.2
2.0
V
REF
DRIVE
AD7298-1
V
DD
2.4
2.4
= 3V
= 3V
2.5
2.6
2.6