Datasheet

AD9920A
Rev. B | Page 14 of 112
TYPICAL PERFORMANCE CHARACTERISTICS
06878-005
POWER (mW)
FREQUENCY (MHz)
18 32 40
3.3V, 2.0V
2.7V, 1.6V
0
50
100
150
200
250
300
350
400
3.0V, 1.8V
Figure 5. AFETG Power vs. Frequency (V-Driver Not Included);
AVDD = TCVDD = DVDD = 1.8 V, All Other Supplies at 2.7 V, 3.0 V, or 3.3 V
DNL (LSB)
ADC OUTPUT CODE
0 0.5k 1.0k 1.5k 2.0k 2.5k 3.0k 3.5k 4.0k
–1.0
1.0
–0.8
0.8
–0.6
0.6
–0.4
0.4
–0.2
0.2
0
06878-006
Figure 6. Typical Differential Nonlinearity (DNL) Performance
0
06878-007
INL (LSB)
ADC OUTPUT CODE
0.5k 1.0k 1.5k 2.0k 2.5k 3.0k 3.5k 4.0k
–1.0
–0.5
0
0.5
1.0
1.5
2.0
2.5
3.0
Figure 7. Typical System Integral Nonlinearity (INL) Performance
50
45
40
35
30
25
20
10
15
5
0
0 10203040506
06878-008
RMS OUTPUT NOISE (LSB)
TOTAL GAIN — CDS + VGA (dB)
0
+3dB CDS GAIN
–3dB CDS GAIN
0dB CDS GAIN
+6dB CDS GAIN
Figure 8. Output Noise vs. Total Gain (CDS + VGA)