Datasheet

Data Sheet ADAS3023
Figure 13. Reference Drift, Internal Reference
Figure 14. Reference Buffer Drift, Internal Reference
Figure 15. 1 kHz FFT, PGIA Gain = 0.2
Figure 16. 1 kHz FFT, PGIA Gain = 0.4
Figure 17. 1 kHz FFT, PGIA Gain = 0.8
Figure 18. 1 kHz FFT, PGIA Gain = 1.6
0
10
20
0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15
30
40
50
60
COUNT
REFERENCE DRIFT (ppm/°C)
10942-116
14
15
13 13
11
3
5
6
2
3
2
3
0
10
20
0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15
30
40
50
60
COUNT
REFERENCE BUFFER DRIFT (ppm/°C)
10942-117
46
13
2
1
28
–160
–140
–120
–100
–80
–60
–40
–20
0
0 50 100 150 200 250
AMPLITUDE (dBFS)
FREQUENCY (kHz)
PGIA GAIN = 0.2
f
S
= 500kSPS
f
IN
= 1.12kHz
SNR = 91.3dB
SINAD = 91.3dB
THD = –110.6dB
SFDR = 106.6dB
INTERNAL REFERENCE
10942-107
–160
–140
–120
–100
–80
–60
–40
–20
0
0 50 100 150 200 250
AMPLITUDE (dBFS)
FREQUENCY (kHz)
PGIA GAIN = 0.4
f
S
= 500kSPS
f
IN
= 1.12kHz
SNR = 91.2dB
SINAD = 91.1dB
THD = –107.0dB
SFDR = 106.0dB
INTERNAL REFERENCE
10942-108
–160
–140
–120
–100
–80
–60
–40
–20
0
0 50 100 150 200 250
AMPLITUDE (dBFS)
FREQUENCY (kHz)
PGIA GAIN = 0.8
f
S
= 500kSPS
f
IN
= 1.12kHz
SNR = 89.7dB
SINAD = 89.6dB
THD = –104.0dB
SFDR = 105.0dB
INTERNAL REFERENCE
10942-109
–160
–140
–120
–100
–80
–60
–40
–20
0
0 50 100 150 200 250
AMPLITUDE (dBFS)
FREQUENCY (kHz)
PGIA GAIN = 1.6
f
S
= 500kSPS
f
IN
= 1.12kHz
SNR = 87.3dB
SINAD = 87.2dB
THD = –103.0dB
SFDR = 106.0dB
INTERNAL REFERENCE
10942-110
Rev. 0 | Page 13 of 32