參數(shù)資料
型號(hào)： ADC1251BIJ
廠商： NATIONAL SEMICONDUCTOR CORP
元件分類(lèi)： ADC
英文描述： Self-Calibrating 12-Bit Plus Sign A/D Converter with Sample-and-Hold
中文描述： 1-CH 12-BIT SUCCESSIVE APPROXIMATION ADC, PARALLEL ACCESS, CDIP24
封裝： CERAMIC, DIP-24
文件頁(yè)數(shù)： 3/16頁(yè)
文件大?。?/td> 301K
代理商： ADC1251BIJ
Converter Electrical Characteristics
(Continued)
The following specifications apply for V
CC
e
DV
CC
e
AV
CC
e a
5.0V, V
b
e b
5.0V, V
REF
e a
5.0V, AZ
e
‘‘1’’ and f
CLK
e
3.5 MHz 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.
(Notes 6, 7 and 8)
Symbol
Parameter
Conditions
Typical
(Note 9)
Limit
Units
(Limit)
(Notes 10, 19)
DYNAMIC CHARACTERISTICS
S/(N
a
D)
Unipolar Signal-to-Noise
a
Distortion
Ratio (Note 17)
f
IN
e
1 kHz, V
IN
e
4.85 V
p-p
72
dB
f
IN
e
20 kHz, V
IN
e
4.85 V
p-p
72
dB
S/(N
a
D)
Bipolar Signal-to-Noise
a
Distortion
Ratio (Note 17)
f
IN
e
1 kHz, V
IN
e
g
4.85V
76
dB
f
IN
e
20 kHz, V
IN
e
g
4.85V
76
dB
b
3 dB Unipolar Full Power Bandwidth
V
IN
e
4.85V, (Note 17)
32
kHz
b
3 dB Bipolar Full Power Bandwidth
V
IN
e
g
4.85V, (Note 17)
25
kHz
t
Ap
Aperture Time
100
ns
Aperture Jitter
100
ps
rms
Digital and DC Electrical Characteristics
The following specifications apply for DV
CC
e
AV
CC
e a
5.0V, V
b
e b
5.0V, V
REF
e a
5.0V, and f
CLK
e
3.5 MHz 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. (Notes 6 and 7)
Symbol
Parameter
Conditions
Typical
(Note 9)
Limit
Units
(Limit)
(Notes 10, 19)
V
IN(1)
Logical ‘‘1’’ Input Voltage for
All Inputs except CLK IN
V
CC
e
5.25V
2.0
V(min)
V
IN(0)
Logical ‘‘0’’ Input Voltage for
All Inputs except CLK IN
V
CC
e
4.75V
0.8
V(max)
I
IN(1)
Logical ‘‘1’’ Input Current
V
IN
e
5V
0.005
1
m
A(max)
I
IN(0)
V
T
a
Logical ‘‘0’’ Input Current
V
IN
e
0V
b
0.005
b
1
m
A(max)
CLK IN Positive-Going
Threshold Voltage
2.8
2.7
V(min)
V
T
b
CLK IN Negative-Going
Threshold Voltage
2.1
2.3
V(max)
V
H
CLK IN Hysteresis
[
V
T
a
(min)
b
V
T
b
(max)
]
0.7
0.4
V(min)
V
OUT(1)
Logical ‘‘1’’ Output Voltage
V
CC
e
4.75V:
I
OUT
e b
360
m
A
I
OUT
e b
10
m
A
2.4
4.5
V(min)
V(min)
V
OUT(0)
Logical ‘‘0’’ Output Voltage
V
CC
e
4.75V,
I
OUT
e
1.6 mA
0.4
V(max)
I
OUT
TRI-STATE
é
Output Leakage
Current
V
OUT
e
0V
b
0.01
b
3
m
A(max)
V
OUT
e
5V
0.01
3
m
A(max)
I
SOURCE
Output Source Current
V
OUT
e
0V
b
20
b
6.0
mA(min)
I
SINK
Output Sink Current
V
OUT
e
5V
20
8.0
mA(min)
DI
CC
DV
CC
Supply Current
CS
e
‘‘1’’
1
2.5
mA(max)
AI
CC
I
b
AV
CC
Supply Current
V
b
Supply Current
CS
e
‘‘1’’
4
10
mA(max)
CS
e
‘‘1’’
2.8
10
mA(max)
3
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