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AD7328
TYPICAL PERFORMANCE CHARACTERISTICS
0
Rev. A | Page 9 of 36
–140
0
500
FREQUENCY (kHz)
S
–20
–40
–60
–80
–100
–120
50
100
150
200
250
300
350
400
450
4096 POINT FFT
V
CC
= V
DRIVE
= 5V
V
DD
, V
T
= 25°C
INT/EXT 2.5V REFERENCE
±10V RANGE
F
= 50kHz
SNR = 77.30dB
SINAD = 76.85dB
THD = –86.96dB
SFDR = –88.22dB
0
Figure 4. FFT True Differential Mode
0
–140
0
500
FREQUENCY (kHz)
S
–20
–40
–60
–80
–100
–120
50
100
150
200
250
300
350
400
450
4096 POINT FFT
V
CC
= V
DRIVE
= 5V
V
DD
, V
T
= 25°C
INT/EXT 2.5V REFERENCE
±10V RANGE
F
= 50kHz
SNR = 74.67dB
SINAD = 74.03dB
THD = –82.68dB
SFDR = –85.40dB
0
Figure 5. FFT Single-Ended Mode
1.0
–1.00
8192
CODE
D
0.8
0.6
0.4
0.2
0
–0.2
–0.4
–0.6
–0.8
1024
2048
3072
4096
5120
6144
7168
512
1536
2560
3584
4608
5632
6656
7680
V
CC
= V
DRIVE
= 5V
T
A
= 25°C
V
, V
= ±15V
INT/EXT 2.5V REFERENCE
±10V RANGE
+DNL = +0.72LSB
–DNL = –0.22LSB
0
Figure 6. Typical DNL True Differential Mode
1.0
–1.00
8192
CODE
I
0.8
0.6
0.4
0.2
0
–0.2
–0.4
–0.6
–0.8
1024
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5120
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7168
512
1536
2560
3584
4608
5632
6656
7680
0
V
CC
= V
DRIVE
= 5V
T
A
= 25°C
V
DD
, V
SS
= ±15V
INT/EXT 2.5V REFERENCE
±10V RANGE
+INL = +0.55LSB
–INL = –0.68LSB
Figure 7. Typical INL True Differential Mode
1.0
–1.00
8192
CODE
D
0.8
0.6
0.4
0.2
0
–0.2
–0.4
–0.6
–0.8
1024
2048
3072
4096
5120
6144
7168
512
1536
2560
3584
4608
5632
6656
7680
V
CC
= V
DRIVE
= 5V
T
A
= 25°C
V
, V
= ±15V
INT/EXT 2.5V REFERENCE
0
±10V RANGE
+DNL = +0.79LSB
–DNL = –0.38LSB
Figure 8. Typical DNL Single-Ended Mode
1.0
–1.00
8192
CODE
I
0.8
0.6
0.4
0.2
0
–0.2
–0.4
–0.6
–0.8
1024
2048
3072
4096
5120
6144
7168
512
1536
2560
3584
4608
5632
6656
7680
V
CC
= V
DRIVE
= 5V
T
A
= 25°C
V
, V
= ±15V
INT/EXT 2.5V REFERENCE
±10V RANGE
+INL = +0.87LSB
–INL = –0.49LSB
0
Figure 9. Typical INL Single-Ended Mode
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