Datasheet

AD7298-1
Rev. A | Page 11 of 24
–90
–85
–80
–75
–70
–65
–60
10 100
THD (dB)
INPUT FREQUENCY (kHz)
V
DD
= 3V
V
DRIVE
= 3V
R
SOURCE
= 0Ω
R
SOURCE
= 10Ω
R
SOURCE
= 33Ω
R
SOURCE
= 47Ω
R
SOURCE
= 100Ω
R
SOURCE
= 200Ω
09321-045
Figure 15. THD vs. Analog Input Frequency for Various Source Impedances
0
1
2
3
4
5
6
0 200 400 600 800 1000 1200
CURRENT (mA)
THROUGHPUT (kSPS)
V
DD
CURRENT
V
DRIVE
CURRENT
09321-114
V
DD
= V
DRIVE
= 3V
Figure 16. Average Supply Current vs. Throughput Rate
10
11
12
13
14
15
16
17
18
19
0 100 200 300 400 500 600 700 800 900 1000
POWER (mW)
THROUGHPUT (kSPS)
V
DD
= V
DRIVE
= 3V
09321-118
Figure 17. Power vs. Throughput in Normal Mode with V
DD
= 3 V
0
0.5
1.0
1.5
2.0
2.5
3.0
3.5
4.0
2.8 2.9 3.0 3.1 3.2 3.3 3.4 3.5 3.6
TOTAL CURRENT (µA)
V
DD
(V)
–40°C
0°C
+25°C
V
DRIVE
= 3V
+85°C
+105°C
+125°C
09321-119
Figure 18. Full Shutdown Current vs. Supply Voltage for Various
Temperatures