Datasheet

AD7273/AD7274
Rev. 0 | Page 12 of 28
–70
–110
0
3000
SUPPLY RIPPLE FREQUENCY (MHz)
PSRR (dB)
–80
–90
–100
500 1000 1500 2000 2500
100mV p-p SINE WAVE ON AV
DD
NO DECOUPLING
04973-016
Figure 16. Power Supply Rejection Ratio (PSRR) vs. Supply Ripple
Frequency Without Decoupling
1.0
0.8
0.6
0.4
0.2
0
–0.2
–0.4
–0.6
–0.8
–1.0
0 4000350030002500200015001000500
CODES
INL ERROR (LSB)
V
DD
= 3V
04973-017
Figure 17. AD7274 INL Performance
1.0
0.8
0.6
0.4
0.2
0
–0.2
–0.4
–0.6
–0.8
–1.0
0 4000350030002500200015001000500
CODES
DNL ERROR (LSB)
V
DD
= 3V
04973-018
Figure 18. AD7274 DNL Performance
1.0
–1.0
1.4
3.6
REFERENCE VOLTAGE (V)
INL ERROR (LSB)
04973-019
0.8
0.6
0.4
0.2
0
–0.2
–0.4
–0.6
–0.8
1.6 1.8 2.0 2.2 2.4 2.6 2.8 3.0 3.2 3.4
POSITIVE INL
NEGATIVE INL
Figure 19. Change in INL vs. Reference Voltage, 3 V Supply
1.0
–1.0
1.4
3.6
REFERENCE VOLTAGE (V)
DNL ERROR (LSB)
04973-020
0.8
0.6
0.4
0.2
0
–0.2
–0.4
–0.6
–0.8
1.6 1.8 2.0 2.2 2.4 2.6 2.8 3.0 3.2 3.4
POSITIVE DNL
NEGATIVE DNL
Figure 20. Change in DNL vs. Reference Voltage, 3 V Supply
3.60
3.40
3.20
3.00
2.80
2.60
2.40
2.20
2.00
1.80
1.60
1.40
1.20
1.00
0.80
0.60
0
5040302010
SCLK FREQUENCY (MHz)
MAX CURRENT (mA)
V
DD
= 2.5V
V
DD
= 3.6V
V
DD
= 3V
04973-021
Figure 21. Maximum Current vs. Supply Voltage
for Different SCLK Frequencies