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Data Sheet AD7328
Rev. C | Page 9 of 36
TYPICAL PERFORMANCE CHARACTERISTICS
0
–14
0
0
50
0
FREQUENCY (kH
z)
SNR (dB)
–20
–40
–6
0
–8
0
–100
–120
50
10
0
15
0
20
0 25
0 30
0
350
400 450
4096 POINT FFT
V
C
C
=
V
DRIVE
=
5
V
V
DD
,
V
S
S
= ±
15V
T
A
=
25
°
C
INT/EXT 2
.5
V
RE
FE
R
ENC
E
±
10V
RAN
GE
F
IN
= 50kHz
S
NR =
77.
30
dB
S
INAD
=
76.
85d
B
T
HD
=
–86
.
96d
B
SFDR = –88
.
22d
B
04852-004
Figure 4. FFT for True Differential Mode
0
–140
0
500
FREQUENCY (kHz)
SNR (dB)
–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
SS
= ±15V
T
A
= 25°C
INT/EXT 2.5V REFERENCE
±10V RANGE
F
IN
= 50kHz
SNR = 74.67dB
SINAD = 74.03dB
THD = –82.68dB
SFDR = –85.40dB
04852-005
Figure 5. FFT for Single-Ended Mode
1
.0
–1.0
0
8192
CODE
DNL ERROR (LSB)
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 358
4 4608 5632 6656 7680
V
CC
= V
DRI
VE
=
5V
T
A
= 25°C
V
DD
, V
SS
=
±15V
INT/EXT 2.5V
REFERENCE
±
10V RANGE
+DNL = +
0.72LSB
–DNL = –0.
22LSB
04852-006
Figure 6. Typical DNL for True Differential Mode
1.0
–1.0
0
8192
CODE
INL ERROR (LSB)
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
04852-007
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 for True Differential Mode
1.0
–1.0
0
8192
CODE
DNL ERROR (LSB)
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
DD
, V
SS
= ±15V
INT/EXT 2.5V REFERENCE
04852-043
±10V RANGE
+DNL = +0.79LSB
–DNL = –0.38LSB
Figure 8. Typical DNL for Single-Ended Mode
1.0
–1.0
0
8192
CODE
INL ERROR (LSB)
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
DD
, V
SS
= ±15V
IN
T/EXT 2.5V REFERENCE
±10V RANGE
+INL = +0.87LSB
–IN
L = –0.49LSB
04852-044
Figure 9. Typical INL for Single-Ended Mode