AD7327
Rev. B | Page 12 of 36
8k
0
–3
CODE
NUMBER
O
F
O
C
CUR
E
N
CES
7k
6k
5k
4k
3k
2k
1k
–2
–1
01
23
VCC =5V
VDD/VSS = ±12V
RANGE = ±10V
10k SAMPLES
TA =25°C
023
1201
7600
1165
11
0
0
5401-
014
Figure 16. Histogram of Codes, Single-Ended Mode
–50
–100
0
RIPPLE FREQUENCY (kHz)
CM
R
(
d
B)
–55
–60
–65
–70
–75
–80
–85
–90
–95
200
400
600
800
1000
1200
DIFFERENTIAL MODE
FIN = 50kHz
VDD/VSS =±12V
fS = 500kSPS
TA = 25°C
VCC =5V
VCC =3V
0
5401
-055
Figure 17. CMRR vs. Common-Mode Ripple Frequency
2.0
–2.0
±VDD/VSS SUPPLY VOLTAGE (V)
DN
L
ERRO
R
(
L
SB)
1.5
1.0
0.5
0
–0.5
–1.0
–1.5
57
9
11
13
15
17
19
±5V RANGE
VCC =VDRIVE =5V
INTERNAL REFERENCE
SINGLE-ENDED MODE
05401-
049
DNL = 500kSPS
Figure 18. DNL Error vs. Supply Voltage at 500 kSPS
2.0
–2.0
±VDD/VSS SUPPLY VOLTAGE (V)
IN
L
ER
R
O
R
(L
SB
)
1.5
1.0
0.5
0
–0.5
–1.0
–1.5
57
9
11
13
15
17
19
±5V RANGE
VCC =VDRIVE =5V
INTERNAL REFERENCE
SINGLE-ENDED MODE
05401-
050
INL = 500kSPS
Figure 19. INL Error vs. Supply Voltage at 500 kSPS
–50
–100
0
1200
SUPPLY RIPPLE FREQUENCY (kHz)
PS
R
(
d
B)
–55
–60
–65
–70
–75
–80
–85
–90
–95
200
400
600
800
1000
100mV p-p SINE WAVE ON EACH SUPPLY
NO DECOUPLING
SINGLE-ENDED MODE
fS = 500kSPS
VCC =5V
VCC =3V
VDD = 12V
VSS =–12V
054
01-
0
54
Figure 20. PSRR vs. Supply Ripple Frequency Without Supply Decoupling
–50
–100
10
1000
INPUT FREQUENCY (kHz)
T
H
D
(
d
B)
100
–55
–60
–65
–70
–75
–80
–85
–90
–95
0
5401-
064
VCC =VDRIVE =5V
VDD/VSS = ±12V
TA =25°C
INTERNAL REF
RANGE = ±10V AND ±2.5V
fS = 500kSPS
DIFFERENTIAL MODE
±10V RANGE
RIN =4000
RIN =3000
RIN =2000
RIN =1000
RIN =100
RIN =12
±2.5V RANGE
RIN = 9000
RIN = 5500
RIN = 2000
RIN = 100
RIN =12
Figure 21. THD vs. Analog Input Frequency for Various Source Impedances,
True Differential Mode