Datasheet

AD7656-1/AD7657-1/AD7658-1 Data Sheet
Rev. D | Page 14 of 32
TYPICAL PERFORMANCE CHARACTERISTICS
0
–160
–180
FREQUENCY (kHz)
AMPLITUDE (dB)
–20
–40
–60
–80
–100
–120
–140
07017-004
40
60 80
100
120200
V
DD
/V
SS
= ±15V
AV
CC
/DV
CC
/V
DRIVE
= 5V
±10V RANGE
INTERNAL REFERENCE
T
A
= 25°C
f
SAMPLE
= 250kSPS
f
IN
= 10kHz
SNR = 88.44dB
SINAD = 88.43dB
THD = –111.66dB
Figure 4. AD7656-1 FFT for ±5 V Range (V
DD
/V
SS
= ±15 V)
0
–160
–180
FREQUENCY (kHz)
AMPLITUDE (dB)
–20
–40
–60
–80
–100
–120
–140
07017-005
40
60 80
100
120
200
V
DD
/V
SS
= ±12V
AV
CC
/DV
CC
/V
DRIVE
= 5V
±5V RANGE
INTERNAL REFERENCE
T
A
= 25°C
f
SAMPLE
= 250kSPS
f
IN
= 10kHz
SNR = 88.25dB
SINAD = 88.24dB
THD = –112.46dB
Figure 5. AD7656-1 FFT for ±5 V Range (V
DD
/V
SS
= ±12 V)
2.0
–2.0
0 10k 20k 30k 40k 50k 60k 65535
CODE
INL (LSB)
1.5
1.0
0.5
0
–0.5
–1.0
–1.5
07017-006
V
DD
/V
SS
= ±12V
AV
CC
/DV
CC
/V
DRIVE
= 5V
f
SAMPLE
= 250kSPS
2 × V
REF
RANGE
T
A
= –40°C
INL WCP = 0.97LSB
INL WCN = –0.72LSB
Figure 6. AD7656-1 Typical INL
2.0
–2.0
0 10k 20k 30k 40k 50k 60k 65535
CODE
DNL (LSB)
1.5
1.0
0.5
0
–0.5
–1.0
–1.5
07017-007
V
DD
/V
SS
= ±12V
AV
CC
/DV
CC
/V
DRIVE
= 5V
f
SAMPLE
= 250kSPS
2 × V
REF
RANGE
T
A
= –40°C
DNL WCP = 0.61LSB
DNL WCN = –0.82LSB
Figure 7. AD7656-1 Typical DNL
2.0
–2.0
0 2000 4000 6000 8000 10000 12000 14000 16000
INL (LSB)
CODE
V
DD
/V
SS
= ±12V
AV
CC
/DV
CC
/V
DRIVE
= 5V
f
SAMPLE
= 250kSPS
±5V RANGE
07017-008
1.6
1.2
0.8
0.4
0
–0.4
–0.8
–1.2
–1.6
Figure 8. AD7657-1 Typical INL
2.0
–2.0
1.5
1.0
0.5
0
–0.5
–1.0
–1.5
0 2000 4000 6000 8000 10000 12000 14000 16000
DNL (LSB)
CODE
07017-009
V
DD
/V
SS
= ±12V
AV
CC
/DV
CC
/V
DRIVE
= 5V
f
SAMPLE
= 250kSPS
±5V RANGE
Figure 9. AD7657-1 Typical DNL