Datasheet

AD7991/AD7995/AD7999
Rev. B | Page 13 of 28
TYPICAL PERFORMANCE CHARACTERISTICS
DNL ERROR (LSB)
CODE
0 500 1000 1500 2000 2500 3000 3500 4000
–1.0
–0.8
–0.6
–0.4
–0.2
0
0.2
0.4
0.6
0.8
1.0
V
DD
= 2.7V
V
REF
= 2.35V
f
SCL
= 1.7MHz
0
6461-005
Figure 4. DNL Error, V
DD
= 2.7 V, V
REF
= 2.35 V, f
SCL
= 1.7 MHz
Without Clock Stretching
INL ERROR (LSB)
CODE
0 500 1000 1500 2000 2500 3000 3500 4000
–1.0
–0.8
–0.6
–0.4
–0.2
0
0.2
0.4
0.6
0.8
1.0
V
DD
= 2.7V
V
REF
= 2.35V
f
SCL
= 1.7MHz
0
6461-006
Figure 5. INL Error, V
DD
= 2.7 V, V
REF
= 2.35 V, f
SCL
= 1.7 MHz
Without Clock Stretching
12.0
8.0
06
REFERENCE VOLTAGE (V)
ENOB (Bits)
SINAD (dB)
11.5
11.0
10.5
10.0
9.5
9.0
8.5
12345
60
62
64
66
68
70
72
74
ENOB V
DD
= 3V
ENOB V
DD
= 5V
SINAD V
DD
= 5V
SINAD V
DD
= 3V
06461-036
Figure 6. ENOB/SINAD vs. Reference Voltage, f
SCL
= 1.7 MHz
Without Clock Stretching
1.0
–1.0
1.2
REFERENCE VOLTAGE (V)
INL ERROR (LSB)
0.8
0.6
0.4
0.2
0
–0.2
–0.4
–0.6
–0.8
1.7 2.2 2.7 3.2 3.7 4.2 4.7
NEGATIVE INL
POSITIVE INL
06461-033
Figure 7. INL Error vs. Reference Voltage , f
SCL
= 1.7 MHz
Without Clock Stretching
1.0
–1.0
1.2
REFERENCE VOLTAGE (V)
DNL ERROR (LSB)
0.8
0.6
0.4
0.2
0
–0.2
–0.4
–0.6
–0.8
1.7 2.2 2.7 3.2 3.7 4.2 4.7
NEGATIVE DNL
POSITIVE DNL
06461-037
Figure 8. DNL Error vs. Reference Voltage, f
SCL
= 1.7 MHz
Without Clock Stretching
INL ERROR (LSB)
CODE
0 500 1000 1500 2000 2500 3000 3500 4000
–1.0
–0.8
–0.6
–0.4
–0.2
0
0.2
0.4
0.6
0.8
1.0
0
6461-013
V
DD
= 5V
V
REF
= 2.5V
f
SCL
= 1.7MHz
Figure 9. INL Error, V
DD
= 5 V, V
REF
= 2.5 V, f
SCL
= 1.7 MHz
Without Clock Stretching