Owner's manual

AC Electrical Characteristics
The following specifications apply for (V
a
e
V
A
a
e
V
D
a
ea
5V, V
REF
a
ea
4.096V, and fully-differential input with fixed
2.048V common-mode voltage) or (V
a
e
V
A
a
e
V
D
a
ea
3.3V, V
REF
a
ea
2.5V and fully-differential input with fixed
1.250V common-mode voltage), V
REF
b
e
0V, 12-bit
a
sign conversion mode, source impedance for analog inputs, V
REF
b
and V
REF
a
s
25X,f
CK
e
f
SK
e
5 MHz, and 10 (t
CK
) acquisition time unless otherwise specified. Boldface limits apply for
T
A
e
T
J
e
T
MIN
to T
MAX
; all other limits T
A
e
T
J
e
25
§
C. (Note 17)
Symbol Parameter Conditions
Typical Limits Units
(Note 10) (Note 11) (Limits)
f
CK
Conversion Clock 10 5 MHz (max)
(CCLK) Frequency 1 MHz (min)
f
SK
Serial Data Clock 10 5 MHz (max)
SCLK Frequency 0 Hz (min)
Conversion Clock 40 % (min)
Duty Cycle 60 % (max)
Serial Data Clock 40 % (min)
Duty Cycle 60 % (max)
t
C
Conversion Time 12-Bit
a
Sign or 12-Bit 44(t
CK
) 44(t
CK
) (max)
8.8 ms (max)
t
A
Acquisition Time 6 Cycles Programmed 6(t
CK
) 6(t
CK
) (min)
(Note 19) 7(t
CK
) (max)
1.2 ms (min)
1.4 ms (max)
10 Cycles Programmed 10(t
CK
) 10(t
CK
) (min)
11(t
CK
) (max)
2.0 ms (min)
2.2 ms (max)
18 Cycles Programmed 18(t
CK
) 18(t
CK
) (min)
19(t
CK
) (max)
3.6 ms (min)
3.8 ms (max)
34 Cycles Programmed 34(t
CK
) 34(t
CK
) (min)
35(t
CK
) (max)
6.8 ms (min)
7.0 ms (max)
t
CAL
Self-Calibration Time 4944(t
CK
) 4944(t
CK
) (max)
988.8 ms (max)
t
AZ
Auto-Zero Time 76(t
CK
) 76(t
CK
) (max)
15.2 ms (max)
t
SYNC
Self-Calibration or 2(t
CK
) 2(t
CK
) (min)
Auto-Zero Synchronization 3(t
CK
) (max)
Time from DOR
0.40 ms (min)
0.60 ms (max)
t
DOR
DOR High Time when CS is Low 9(t
SK
) 9(t
SK
) (max)
Continuously for Read Data and Software
1.8 ms (max)
Power Up/Down
t
CONV
CONV Valid Data Time 8(t
SK
) 8(t
SK
) (max)
1.6 ms (max)
7