ADC12L030CIWM National Semiconductor, ADC12L030CIWM Datasheet - Page 8

• Manufacturer Part Number: ADC12L030CIWM
• Description: 3.3V Self-Calibrating 12-Bit Plus Sign Serial I/O A/D Converters with MUX and Sample/Hold
• Manufacturer: National Semiconductor

www.national.com
f
f
t
t
t
t
t
t
t
t
Symbol
CK
SK
C
A
CAL
AZ
SYNC
DOR
CONV
HPU
The following specifications apply for V
sion mode, t
with fixed 1.250V common-mode voltage, and 10(t
= T
AC Electrical Characteristics
J
= T
MIN
Conversion Clock (CCLK) Frequency
Serial Data Clock SCLK Frequency
Conversion Clock Duty Cycle
Serial Data Clock Duty Cycle
Conversion Time
Acquisition Time
(Note 19)
Self-Calibration Time
Auto-Zero Time
Self-Calibration or Auto-Zero
Synchronization Time
from DOR
DOR High Time when CS is Low
Continuously
for Read Data and Software Power
Up/Down
CONV Valid Data Time
Hardware Power-Up Time, Time from
PD Falling Edge to EOC Rising Edge
r
to T
= t
f
MAX
= 3 ns, f
; all other limits T
Parameter
CK
= f
SK
= 5 MHz, R
A
+
= T
= V
J
A
+ = V
= 25˚C. (Note 17)
S
= 25 , source impedance for V
CK
D
+ = +3.3 V
) acquisition time unless otherwise specified. Boldface limits apply for T
12-Bit + Sign or 12-Bit
8-Bit + Sign or 8-Bit
6 Cycles Programmed
10 Cycles Programmed
18 Cycles Programmed
34 Cycles Programmed
Conditions
8
DC
, V
REF
+ = +2.500 V
REF
+ and V
DC
(Note 10)
4944(t
Typical
44(t
21(t
10(t
18(t
34(t
76(t
6(t
2(t
9(t
8(t
, V
250
10
10
1
0
CK
CK
SK
SK
CK
CK
CK
CK
CK
CK
REF
CK
REF
)
)
)
)
)
)
)
)
)
)
− = 0 V
)
−
25 , fully-differential input
4944(t
(Note 11)
DC
44(t
21(t
10(t
11(t
18(t
19(t
34(t
35(t
76(t
Limits
6(t
7(t
2(t
3(t
9(t
8(t
988.8
15.2
0.40
0.60
700
, 12-bit + sign conver-
8.8
4.2
1.2
1.4
2.0
2.2
3.6
3.8
6.8
7.0
1.8
1.6
40
60
40
60
5
5
CK
CK
CK
CK
SK
SK
CK
CK
CK
CK
CK
CK
CK
CK
CK
CK
)
)
)
)
)
)
)
)
)
)
)
)
)
)
)
)
MHz (max)
MHz (max)
MHz (min)
µs (max)
µs (max)
µs (max)
µs (max)
µs (max)
µs (max)
µs (max)
µs (max)
µs (max)
µs (max)
µs (max)
µs (max)
Hz (min)
% (max)
% (max)
(Limits)
µs (min)
µs (min)
µs (min)
µs (min)
µs (min)
% (min)
% (min)
Units
(max)
(max)
(max)
(max)
(max)
(max)
(max)
(max)
(max)
(max)
(max)
(min)
(min)
(min)
(min)
(min)
A