AD7298-1 Analog Devices, AD7298-1 Datasheet - Page 11

• 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

Figure 15. THD vs. Analog Input Frequency for Various Source Impedances
–60
–65
–70
–75
–80
–85
–90
6
5
4
3
2
1
0
0
10
Figure 16. Average Supply Current vs. Throughput Rate
V
DD
R
R
R
R
R
R
= V
SOURCE
SOURCE
SOURCE
SOURCE
SOURCE
SOURCE
DRIVE
200
V
= 3V
= 0Ω
= 10Ω
= 33Ω
= 47Ω
= 100Ω
= 200Ω
DD
V
CURRENT
DRIVE
400
INPUT FREQUENCY (kHz)
THROUGHPUT (kSPS)
CURRENT
600
100
800
1000
V
V
DD
DRIVE
= 3V
= 3V
1200
Rev. A | Page 11 of 24
Figure 17. Power vs. Throughput in Normal Mode with V
Figure 18. Full Shutdown Current vs. Supply Voltage for Various
19
18
17
16
15
14
13
12
10
4.0
3.5
3.0
2.5
2.0
1.5
1.0
0.5
11
0
2.8
0
V
DD
100
–40°C
0°C
+25°C
= V
2.9
DRIVE
200
3.0
= 3V
+85°C
+105°C
+125°C
300
THROUGHPUT (kSPS)
3.1
Temperatures
400
V
500
DD
3.2
(V)
600
3.3
700
3.4
800
V
DRIVE
AD7298-1
3.5
900
DD
= 3V
= 3 V
1000
3.6