ADC12030CIWM National Semiconductor, ADC12030CIWM Datasheet - Page 9

• Manufacturer Part Number: ADC12030CIWM
• Description: Self-Calibrating 12-Bit Plus Sign Serial I/O A/D Converters with MUX and Sample/Hold
• Manufacturer: National Semiconductor

Symbol
t
t
t
t
t
t
t
t
t
t
t
t
t
t
t
Symbol
CKAL
AZ
SYNC
DOR
CONV
HPU
SPU
ACC
SET-UP
DELAY
1H
HDI
SDI
HDO
DDO
The following specifications apply for V
sion mode, t
MHz for the ADC12030, ADC12032, ADC12034 and ADC12038, R
fully-differential input with fixed 2.048V common-mode voltage, and 10(t
face limits apply for T
The following specifications apply for V
sion mode, t
MHz for the ADC12030, ADC12032, ADC12034 and ADC12038, R
fully-differential input with fixed 2.048V common-mode voltage, and 10(t
face limits apply for T
AC Electrical Characteristics
AC Electrical Characteristics
, t
0H
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
Software Power-Up Time, Time from
Serial Data Clock Falling Edge to
EOC Rising Edge
Access Time Delay from
CS Falling Edge to DO Data Valid
Set-Up Time of CS Falling Edge to
Serial Data Clock Rising Edge
Delay from SCLK Falling
Edge to CS Falling Edge
Delay from CS Rising Edge to
DO TRI-STATE
DI Hold Time from Serial Data
Clock Rising Edge
DI Set-Up Time from Serial Data
Clock Rising Edge
DO Hold Time from Serial Data
Clock Falling Edge
Delay from Serial Data Clock
Falling Edge to DO Data Valid
r
r
= t
= t
Parameter
f
f
= 3 ns, f
= 3 ns, f
A
A
= T
= T
Parameter
CK
CK
J
J
= f
= f
= T
= T
SK
SK
MIN
MIN
= 8 MHz for the ADC12H030, ADC12H032, ADC12H034 and ADC12H038, f
= 8 MHz for the ADC12H030, ADC12H032, ADC12H034 and ADC12H038, f
to T
to T
+
+
= V
= V
Conditions
MAX
MAX
A
A
+ = V
+ = V
; all other limits T
; all other limits T
(Continued)
D
D
+ = +5.0 V
+ = +5.0 V
R
R
L
L
= 3k, C
= 3k, C
Conditions
(Note 10)
4944(t
DC
DC
9
A
Typical
A
76(t
2(t
9(t
8(t
L
L
= T
= T
, V
, V
S
S
= 100 pF
= 100 pF
CK
SK
SK
CK
REF
= 25 , source impedance for V
= 25 , source impedance for V
REF
J
CK
J
)
)
)
)
= 25˚C. (Note 17)
= 25˚C. (Note 17)
CK
)
CK
+ = +4.096 V
+ = +4.096 V
) acquisition time unless otherwise specified. Bold-
) acquisition time unless otherwise specified. Bold-
ADC12H030/2/4/8 ADC12030/2/4/8
(Note 11)
4944(t
76(t
Limits
2(t
3(t
618.0
0.250
0.375
9(t
1.125
8(t
9.5
1.0
CK
CK
SK
SK
(Note 10)
CK
Typical
DC
CK
DC
)
)
)
)
)
140
140
20
40
25
35
)
, V
, V
0
5
5
REF
REF
− = 0 V
− = 0 V
4944(t
(Note 11)
76(t
Limits
REF
REF
2(t
3(t
9(t
8(t
988.8
15.2
0.40
0.60
1.8
1.6
(Note 11)
DC
DC
CK
CK
SK
SK
Limits
CK
+ and V
+ and V
, 12-bit + sign conver-
CK
, 12-bit + sign conver-
250
250
100
50
30
15
10
50
50
)
)
)
)
5
5
)
)
CK
REF
REF
CK
= f
= f
−
−
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µs (max)
µs (max)
µs (max)
µs (max)
µs (max)
(Limits)
µs (min)
SK
SK
µs (max)
µs (max)
ns (max)
ns (max)
ns (max)
ns (max)
Units
(max)
(max)
(max)
(max)
(max)
(Limits)
ns (min)
ns (min)
ns (min)
ns (min)
ns (min)
(min)
25 ,
25 ,
Units
= 5
= 5