Datasheet

Data Sheet AD7327
Rev. B | Page 11 of 36
–
50
–100
10 1000
ANALOG INPUT FREQUENCY (kHz)
THD (dB)
100
–55
–60
–65
–70
–75
–80
–85
–90
–95
05401-060
0V TO +10V SE
0V TO +10V DIFF
±10V DIFF
±10V SE
±2.5V SE
±2.5V DIFF
±5V DIFF
±5V SE
V
CC
=V
DRIVE
=3V
V
DD
/V
SS
= ±12V
T
A
=25°C
f
S
= 500kSPS
INTERNAL REFERENCE
Figure 10. THD vs. Analog Input Frequency
for Single-Ended (SE) and True Differential Mode (Diff) at 3 V V
CC
–
50
–100
10 1000
ANALOG INPUT FREQUENCY (kHz)
THD (dB)
100
–55
–60
–65
–70
–75
–80
–85
–90
–95
05401-061
V
CC
=V
DRIVE
=5V
V
DD
/V
SS
=±12V
T
A
= 25°C
f
S
= 500kSPS
INTERNAL REFERENCE
0V TO +10V SE
±10V SE
±10V DIFF
0V TO +10V DIFF
±5V SE
±5V DIFF
±2.5V SE
±2.5V DIFF
Figure 11. THD vs. Analog Input Frequency
for Single-Ended (SE) and True Differential Mode (Diff) at 5 V V
CC
80
50
10 1000
ANALOG INPUT FREQUENCY (kHz)
SINAD (dB)
100
75
70
65
60
55
05401-062
V
CC
=V
DRIVE
=3V
V
DD
/V
SS
=±12V
T
A
= 25°C
f
S
= 500kSPS
INTERNAL REFERENCE
±5V DIFF
±2.5V DIFF
±5V SE
±2.5V SE
0V TO +10V DIFF
±10V DIFF
±10V SE
0V TO +10V SE
Figure 12. SINAD vs. Analog Input Frequency
for Single-Ended (SE) and True Differential Mode (Diff) at 3 V V
CC
80
50
10 1000
ANALOG INPUT FREQUENCY (kHz)
SINAD (dB)
100
75
70
65
60
55
05401-063
V
CC
=V
DRIVE
=5V
V
DD
/V
SS
=±12V
T
A
= 25°C
f
S
= 500kSPS
INTERNAL REFERENCE
±10V SE
0V TO +10V SE
±10V DIFF
±2.5V SE
±5V SE
±2.5V DIFF
±5V DIFF
0V TO +10V DIFF
Figure 13. SINAD vs. Analog Input Frequency
for Single-Ended (SE) and True Differential Mode (Diff) at 5 V V
CC
–
50
–95
0 600
FREQUENCY OF INPUT NOISE (kHz)
CHANNEL-TO-CHANNEL ISOLATION (dB)
–55
–60
–65
–70
–75
–80
–85
–90
100 200 300 400 500
V
DD
/V
SS
=±12V
SINGLE-ENDED MODE
f
S
= 500kSPS
T
A
=25°C
50kHz ON SELECTED CHANNEL
V
CC
=3V
V
CC
=5V
05401-012
Figure 14. Channel-to-Channel Isolation
10k
0
–2
CODE
NUMBER OF OCCURRENCES
9k
8k
7k
6k
5k
4k
3k
2k
1k
–1 0 1 2
0
228
9469
303
0
V
CC
=5V
V
DD
/V
SS
=±12V
RANGE = ±10V
10k SAMPLES
T
A
= 25°C
05401-013
Figure 15. Histogram of Codes, True Differential Mode