Datasheet

AD7634 Data Sheet
Rev. B | Page 12 of 32
TYPICAL PERFORMANCE CHARACTERISTICS
AVDD = DVDD = 5 V; OVDD = 5 V; VCC = 15 V; VEE = −15 V; V
REF
= 5 V; T
A
= 25°C.
2.5
–2.5
0 262144
INL (LSB)
CODE
65536 131072 196608
2.0
1.0
–0.5
–1.5
1.5
0.5
0
–1.0
–2.0
06406-005
POSITIVE INL = 1.40LSB
NEGATIVE INL = –1.10LSB
Figure 5. Integral Nonlinearity vs. Code, Bipolar 10 V Range
120
0
–2.0 2.0
NUMBER OF UNITS
INL DISTRIBUTION (LSB)
20
60
40
80
100
–1.2 –0.8 –0.4 0 0.4 0.8 1.2 1.6–1.6
NEGATIVE INL
POSITIVE INL
06406-006
Figure 6. Integral Nonlinearity Distribution, Unipolar 10 V Range
(288 Devices)
70000
0
1FFFE 20008
COUNTS
CODE IN HEX
20000 20002 20004 20006
60000
50000
40000
20000
30000
10000
06406-007
σ = 0.80
00
25
34164
2172
20
00
1997
32769
59925
Figure 7. Histogram of 261,120 Conversions of a DC Input
at the Code Center, Bipolar 5 V Range
2.5
–1.0
0 262144
DNL (LSB)
CODE
65536 131072 196608
2.0
1.0
–0.5
1.5
0.5
0
0
6406-008
POSITIVE DNL = 1.28LSB
NEGATIVE DNL = –0.63LSB
Figure 8. Differential Nonlinearity vs. Code, Bipolar 10 V Range
180
0
–2.0 2.0
NUMBER OF UNITS
DNL DISTRIBUTION (LSB)
20
60
100
140
–1.2 –0.8 –0.4 0 0.4 0.8 1.2 1.6–1.6
NEGATIVE DNL
POSITIVE DNL
40
80
120
160
06406-009
Figure 9. Differential Nonlinearity Distribution, Bipolar 5 V Range
(288 Devices)
COUNTS
CODE IN HEX
200061FFFC 1FFFE 20000 20002 20004
60000
0
50000
40000
30000
20000
10000
06406-010
00
σ = 0.75
56811
54874
005
6901
294349
11838
Figure 10. Histogram of 261,120 Conversions of a DC Input
at the Code Transition, Bipolar 5 V Range