ꢀ ꢁꢂ ꢃꢄ ꢅ ꢆ ꢁꢇ ꢈ ꢂ ꢁ ꢃꢄ ꢅ ꢆ ꢁ
ꢉ ꢄꢊ ꢋ ꢌꢍꢀ ꢎꢀ ꢈ ꢏꢐ ꢑꢁ ꢀꢒ ꢀ ꢓꢔ
ꢕ ꢔꢕꢂ ꢓꢎꢌ ꢈꢓꢌꢍ ꢀ ꢎ ꢀꢈꢕꢂ ꢁꢓ ꢔꢖ ꢑ ꢐꢈꢑ ꢐꢒ
SLAS074D − DECEMBER 1986 − REVISED SEPTEMBER 2003
OPERATING CHARACTERISTICS
V
CC+
= 5 V, V
− = 5 V, V = 1 V, f
= 120 kHz, T = 25°C (unless otherwise noted)
CC
ref clock
A
PARAMETER
TEST CONDITIONS
MIN
TYP
MAX
UNIT
ppm/°C
count
LSB
α
FS
Full-scale temperature coefficient (see Note 1)
Linearity error
V
= 2 V,
0°C ≤ T ≤ 70°C
5
ID
−2 V ≤ V ≤ 2 V
A
E
L
0.5
0.01
0.5
ID
E
D
Differential linearity error (see Note 2)
Full-scale symmetry error (rollover error) (see Note 3)
−2 V ≤ V ≤ 2 V
ID
2 V
E
FS
V
V
V
=
1
count
ID
Digital
Reading
Display reading with 0-V input
= 0,
0°C ≤ T ≤ 70°C −0.0000
0.0000 0.0000
ID
A
V
,
T
A
= 25°C
0.9998
0.9995
0.9999 1.0000
0.9999 1.0005
ID = ref
Digital
Reading
Display reading in ratiometric operation
0°C ≤ T ≤ 70°C
A
NOTES: 1. This parameter is measured with an external reference having a temperature coefficient of less than 0.01 ppm/°C.
2. The magnitude of the difference between the worst case step of adjacent counts and the ideal step.
3. Rollover error is the difference between the absolute values of the conversion for 2 V and −2 V.
TIMING DIAGRAMS
End of Conversion
†
BUSY
B1−B8
D5
D4
D3
D2
D1
D5
†
STROBE
200 Counts
D5
201 Counts
200 Counts
D4
D3
200 Counts
200 Counts
D2
D1
200 Counts
200 Counts
†
Delay between BUSY going low and the first STROBE pulse is dependent upon the analog input.
Figure 1
4
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