Datasheet
AD7764
Rev. A | Page 14 of 32
2.0
–2.0
–1.5
–1.0
–0.5
0
0.5
1.0
1.5
6k 55k 59,53510k 15k 20k 25k 30k 35k 40k 45k 50k
DNL (LSB)
CODE
06518-208
Figure 24. DNL Plot
0.00300
–0.00300
–0.00225
–0.00150
–0.00075
0
0.00075
0.00150
0.00225
6k 55k 59,53510k 15k 20k 25k 30k 35k 40k 45k 50k
INL (%)
16-BIT CODE SCALING
06518-206
–40°C
+25°C
+85°C
Figure 25. Normal Power Mode INL
110
109
108
107
106
105
104
103
102
0 64 128 192 256
LOW SNR
SNR (dB)
DECIMATION RATE
NORMAL SNR
06518-009
Figure 26. Normal and Low Power Mode, SNR vs. Decimation Rate,
1 kHz, −0.5 dB Input Tone
0
–20
–40
–60
–80
–100
–120
–140
–160
–180
0 78,12460k40k20k
AMPLITUDE (dB)
FREQUENCY (Hz)
06518-209
Figure 27. Normal Power Mode, IMD, f
IN
A = 49.7 kHz, f
IN
B = 50.3 kHz,
50 kHz Center Frequency, 128× Decimation Rate
6k 55k 59,53510k 15k 20k 25k 30k 35k 40k 45k 50k
INL (%)
16-BIT CODE SCALING
06518-207
–40°C
+25°C
+85°C
0.003225
0.003000
0.00225
0.00150
0.00075
0
–0.00012
Figure 28. Low Power Mode INL