Datasheet

Data Sheet AD7656-1/AD7657-1/AD7658-1
Rev. D | Page 15 of 32
1.0
0.8
0.6
0.4
0.2
0
–0.2
–0.4
–0.6
–0.8
–1.0
0 500 1000 1500 2000 2500 3000 3500 4000
INL (LSB)
CODE
07017-010
V
DD
/V
SS
= ±12V
AV
CC
/DV
CC
/V
DRIVE
= 5V
f
SAMPLE
= 250kSPS
±5V RANGE
Figure 10. AD7658-1 Typical INL
1.0
0.8
0.6
0.4
0.2
0
–0.2
–0.4
–0.6
–0.8
–1.0
0 500 1000 1500 2000 2500 3000 3500 4000
DNL (LSB)
CODE
V
DD
/V
SS
= ±12V
AV
CC
/DV
CC
/V
DRIVE
= 5V
f
SAMPLE
= 250kSPS
±5V RANGE
07017-011
Figure 11. AD7658-1 Typical DNL
90
83
10 100
07017-012
ANALOG INPUT FREQUENCY (kHz)
SINAD (dB)
89
88
87
86
85
84
f
SAMPLE
= 250kSPS
T
A
= 25°C
INTERNAL REFERENCE
±10V RANGE
V
DD
/V
SS
= ±12V
AV
CC
/DV
CC
/V
DRIVE
= 5V
±5V RANGE
V
DD
/V
SS
= ±12V
AV
CC
/DV
CC
/V
DRIVE
= 5V
Figure 12. AD7656-1 SINAD vs. Analog Input Frequency
–80
–115
10 100
07017-013
ANALOG INPUT FREQUENCY (kHz)
THD (dB)
–85
–90
–95
–100
–105
–110
f
SAMPLE
= 250kSPS
T
A
= 25°C
INTERNAL REFERENCE
±10V RANGE
V
DD
/V
SS
= ±12V
AV
CC
/DV
CC
/V
DRIVE
= 5V
±5V RANGE
V
DD
/V
SS
= ±12V
AV
CC
/DV
CC
/V
DRIVE
= 5V
Figure 13. AD7656-1 THD vs. Analog Input Frequency
–80
–120
10 100
07017-014
ANALOG INPUT FREQUENCY (kHz)
THD (dB)
–90
–100
–110
V
DD
/V
SS
= ±16.5V
AV
CC
/DV
CC
/V
DRIVE
= 5.25V
T
A
= 25°C
INTERNAL REFERENCE
±4 × V
REF
RANGE
R
SOURCE
= 1000Ω
R
SOURCE
= 220Ω
R
SOURCE
= 50Ω
R
SOURCE
= 100Ω
R
SOURCE
= 10Ω
Figure 14. AD7656-1 THD vs. Analog Input Frequency for Various Source
Impedances, ±4 × V
REF
Range
–80
–115
10 100
07017-015
ANALOG INPUT FREQUENCY (kHz)
THD (dB)
–85
–90
–95
–100
–105
–110
V
DD
/V
SS
= ±12V
AV
CC
/DV
CC
/V
DRIVE
= 5V
T
A
= 25°C
INTERNAL REFERENCE
±2 × V
REF
RANGE
R
SOURCE
= 1000Ω
R
SOURCE
= 220Ω
R
SOURCE
= 100Ω
R
SOURCE
= 50Ω
R
SOURCE
= 10Ω
Figure 15. AD7656-1 THD vs. Analog Input Frequency for Various Source
Impedances, ±2 × V
REF
Range