ADC12030CIWM National Semiconductor, ADC12030CIWM Datasheet - Page 8

• 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

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Symbol
Symbol
t
POWER SUPPLY CHARACTERISTICS
I
I
f
f
t
A
REF
CK
SK
C
A
The following specifications apply for V
sion mode, f
ADC12030, ADC12032, ADC12034 and ADC12038, R
input with fixed 2.048V common-mode voltage, and 10(t
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
DC and Logic Electrical Characteristics
+
AC Electrical Characteristics
A
= T
Positive Analog Supply Current
Reference Input Current
Conversion Clock
(CCLK) Frequency
Serial Data Clock
SCLK Frequency
Conversion Clock
Duty Cycle
Serial Data Clock
Duty Cycle
Conversion Time
Acquisition Time
(Note 19)
J
CK
r
= T
= t
Parameter
= f
MIN
f
= 3 ns, f
SK
to T
= 8 MHz for the ADC12H030, ADC12H032, ADC12H034 and ADC12H038, f
Parameter
A
MAX
= T
CK
; all other limits T
J
= f
= T
SK
MIN
12-Bit + Sign or 12-Bit
8-Bit + Sign or 8-Bit
6 Cycles Programmed
10 Cycles Programmed
18 Cycles Programmed
34 Cycles Programmed
= 8 MHz for the ADC12H030, ADC12H032, ADC12H034 and ADC12H038, f
to T
+
+
= V
= V
Conditions
MAX
A
A
A
+ = V
+ = V
; all other limits T
= T
Awake
CS = HIGH, Powered Down, CCLK on
CS = HIGH, Powered Down, CCLK off
Awake
CS = HIGH, Powered Down
J
D
D
+ = +5.0 V
+ = +5.0 V
= 25˚C. (Notes 7, 8, 9)
S
CK
= 25 , source impedance for V
) acquisition time unless otherwise specified. Boldface limits apply
Conditions
(Note 10)
8
DC
DC
A
Typical
44(t
21(t
10(t
18(t
34(t
6(t
= T
, V
, V
10
10
S
1
0
CK
(Continued)
CK
CK
CK
CK
CK
REF
REF
= 25 , source impedance for V
J
)
)
)
)
)
)
= 25˚C. (Note 17)
CK
+ = +4.096 V
+ = +4.096 V
) acquisition time unless otherwise specified. Bold-
ADC12H030/2/4/8 ADC12030/2/4/8
(Note 11)
44(t
21(t
10(t
11(t
18(t
19(t
34(t
35(t
Limits
6(t
7(t
2.625
0.875
1.375
2.375
4.375
0.75
1.25
2.25
4.25
5.5
40
60
40
60
8
8
CK
CK
CK
CK
CK
CK
CK
CK
CK
CK
DC
DC
)
)
)
)
)
)
)
)
)
)
REF
, V
, V
REF
REF
+ and V
(Note 10)
Typical
− = 0 V
− = 0 V
2.7
0.1
0.1
10
70
CK
(Note 11)
REF
44(t
21(t
10(t
11(t
18(t
19(t
34(t
35(t
Limits
REF
6(t
7(t
= f
8.8
4.2
1.2
1.4
2.0
2.2
3.6
3.8
6.8
7.0
DC
DC
40
60
40
60
−
5
5
CK
CK
+ and V
CK
CK
CK
CK
CK
CK
CK
CK
SK
(Note 11)
, 12-bit + sign conver-
, 12-bit + sign conver-
)
)
Limits
)
)
)
)
)
)
)
)
25 , fully-differential
= 5 MHz for the
4.0
REF
CK
= f
−
MHz (max)
MHz (max)
MHz (min)
Hz (min)
µs (max)
µs (max)
µs (max)
µs (max)
µs (max)
µs (max)
% (max)
% (max)
µs (min)
µs (min)
µs (min)
µs (min)
(Limits)
% (min)
% (min)
SK
mA (max)
Units
(max)
(max)
(max)
(max)
(max)
(max)
(Limits)
(min)
(min)
(min)
(min)
25 ,
Units
= 5
µA
µA
µA
µA