Datasheet

AD7608 Data Sheet
Rev. A | Page 14 of 32
TYPICAL PERFORMANCE CHARACTERISTICS
–160
–140
–120
–100
–80
–60
–40
–20
0
0 10k 20k 30k 40k 50k 60k 70k 80k 90k 100k
SNR (dB)
INPUT FREQUENCY (Hz)
08938-008
AV
CC
, V
DRIVE
= 5V
INTERNAL REFERENCE
f
SAMPLE
= 200 kSPS
T
A
= 25°C
±10V RANGE
SNR = 91.23dB
SINAD = 91.17dB
THD = 108.69dB
16384 POINT FFT
f
IN
= 1kHz
Figure 8. FFT Plot, ±10 V Range
–160
–140
–120
–100
–80
–60
–40
–20
0
0 10k 20k 30k 40k 50k 60k 70k 80k 90k 100k
AMPLITUDE (dB)
INPUT FREQUENCY (Hz)
AV
CC
, V
DRIVE
= 5V
INTERNAL REFERENCE
f
SAMPLE
= 200 k
SPS
T
A
= 25°C
±5V RANGE
SNR = 90.46dB
SINAD = 90.43dB
THD = 110.74dB
16384 POINT FFT
f
IN
= 1kHz
08938-009
Figure 9. FFT Plot, ±5 V Range
–160
–140
–120
–100
–80
–60
–40
–20
0
0 1k 2k 3k 4k 5k 6k
AMPLITUDE (dB)
INPUT FREQUENCY (Hz)
AV
CC
, V
DRIVE
= 5V
INTERNAL REFERENCE
f
SAMPLE
= 12.5 kSPS
T
A
= 25°C
±10V RANGE
SNR = 100.26dB
SINAD = 100.15dB
THD = –115.21dB
16384 POINT FFT
f
IN
= 131Hz
08938-109
Figure 10. FFT Over Sampling by 16, ±10 V Range
–4.0
–3.0
–1.5
–0.5
0.5
1.5
2.5
3.5
–3.5
–2.0
–2.5
–1.0
0
1.0
2.0
3.0
4.0
0
25,000 50,000 75,000
100,000 125,000
150,000 175,000 200,000 225,000
INL (LSB)
CODE
250,000
08938-010
AV
CC
, V
DRIVE
= 5V
INTERNAL REFERENCE
f
SAMPLE
= 200 kSPS
T
A
= 25°C
±
10V RANGE
Figure 11. Typical INL, ±10 V Range
–1.0
–0.7
–0.3
–0.1
0.1
0.3
0.5
0.9
–0.9
–0.4
–0.5
–0.2
0
0.2
0.4
0.7
1.0
0
25,000
DNL (LSB)
CODE
50,000 75,000
100,000 125,000
150,000 175,000 200,000 225,000 250,000 262,144
–0.6
–0.8
0.8
0.6
08938-011
AV
CC
, V
DRIVE
= 5V
INTERNAL REFERENCE
f
SAMPLE
= 20 0 kSPS
T
A
= 25°C
±10V RANGE
Figure 12. Typical DNL, ±10 V Range
–4.0
–3.0
–1.5
–0.5
0.5
1.5
2.5
3.5
–3.5
–2.0
–2.5
–1.0
0
1.0
2.0
3.0
4.0
0
25,000 50,000 75,000
100,000 125,000 150,000 175,000 200,000 225,000
INL (LSB)
CODE
250,000
08938-012
AV
CC
, V
DRIVE
= 5V
INTERNAL REFERENCE
f
SAMPLE
= 200 kSPS
T
A
= 25°C
±5V RANGE
Figure 13. Typical INL, ±5 V Range