Datasheet

AD7622
Rev. 0 | Page 12 of 28
TYPICAL PERFORMANCE CHARACTERISTICS
1.50
–0.50
0
0.50
1.00
–1.50
–1.00
0 16384 32768 49152 65536
06023-005
INL (LSB)
CODE
POSITIVE INL = +0.43 LSB
NEGATIVE INL = –0.49 LSB
Figure 6. Integral Nonlinearity vs. Code
00
44
76
00
50000
0
100000
150000
200000
250000
7FF8 7FF9 7FFA 7FFB 7FFC 7FFD 7FFE 7FFF 8000
27695
196433
06023-006
COUNTS
CODES IN HEX
σ = 0.5
V
REF
= 2.5V
36872
Figure 7. Histogram of 261,120 Conversions of a DC Input at
the Code Center (External Reference)
06023-007
V
REF
(V)
TEMPERATURE (°C)
2.0470
2.0472
2.0474
2.0476
2.0478
2.0480
2.0482
2.0484
2.0486
–55 –35 –15 5 25 45 65 85 105 125
Figure 8. Typical Reference Voltage Output vs. Temperature (2 Units)
1.25
–1.00
–0.75
–0.50
–0.25
0
0.25
0.50
0.75
1.00
0 16384 32768 49152 65536
06023-008
DNL (LSB)
CODE
Figure 9. Differential Nonlinearity vs. Code
00
784
37789
457
10
0
40000
80000
120000
160000
200000
7FF8 7FF9 7FFA 7FFB 7FFC 7FFD 7FFE 7FFF 8000
50640
171449
06023-009
COUNTS
CODES IN HEX
σ = 0.5
V
REF
= 2.048V
Figure 10. Histogram of 261,120 Conversions of a DC Input at
the Code Center (Internal Reference)
06023-010
ZERO ERROR, GAIN ERROR (LSB)
TEMPERATURE (°C)
–4
–3
–2
–1
0
1
2
3
4
–55 –35 –15 5 25 45 65 85 105 125
ZERO ERROR
GAIN ERROR
Figure 11. Zero Error, Gain Error vs. Temperature