參數(shù)資料
型號： LM12434CIV
廠商： NATIONAL SEMICONDUCTOR CORP
元件分類： 模擬信號調(diào)理
英文描述： Sign Data Acquisition System with Serial I/O and Self-Calibration
中文描述： SPECIALTY ANALOG CIRCUIT, PQCC28
封裝： PLASTIC, LCC-28
文件頁數(shù)： 8/80頁
文件大?。?/td> 1561K
代理商： LM12434CIV
2.0 Electrical Specifications
(Continued)
2.2.2 Converter Dynamic Characteristics
The following specifications apply only to the LM12434 and LM12438 for V
A
a
e
V
D
a
e
5V, AGND
e
DGND
e
0V, V
REF
a
e
4.096V, V
REF
b
e
0V, 12-bit
a
sign conversion mode, f
CLK
e
8.0 MHz,
throughput rate
e
133.3 kHz, R
S
e
25
X
, source impedance for V
REF
a
and V
REF
b
s
25
X
, fully-differential input with fixed
2.048V common-mode voltage, and minimum 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. (Notes 6, 7, 8 and 9) (Continued)
Symbol
Parameter
Conditions
Typical
(Note 10)
Limits
(Note 11)
Units
(Limit)
IMD
Two Tone Intermodulation Distortion
Differential Input
V
IN
e
g
4.096V (Note 20)
f
1
e
19.190 kHz
f
2
e
19.482 kHz
b
82
dBc
IMD
Two Tone Intermodulation Distortion
Single Ended Input
V
IN
e
4.096 V
pp
f
1
e
19.190 kHz
f
2
e
19.482 kHz
b
80
dBc
Multiplexer Channel-to-Channel Crosstalk
V
IN
e
4.096 V
PP
f
IN
e
5 kHz
f
CROSSTALK
e
40 kHz
LM12434 MUXOUT Only
and LM12438 MUX
plus Converter (Note 21)
b
90
dBc
t
PU
Power-Up Time
10
ms
t
WU
Wake-Up Time
(Note 22)
2
ms
2.2.3 DC Characteristics
The following specifications apply to the LM12434 and LM12
à
L
ó
438 for V
A
a
e
V
D
a
e
5V
à
3.3V
]
,
AGND
e
DGND
e
0V, V
REF
a
e
4.096V
à
2.5V
ó
, V
REF
b
e
0V, f
CLK
e
8.0 MHz
à
6 MHz
ó
and minimum 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. (Notes 6, 7
and 8)
Symbol
Parameter
Conditions
Typical
(Note 10)
Limits
(Note 11)
Units
(Limit)
I
D
a
V
D
a
Supply Current
f
CLK
e
8 MHz
à
6 MHz
ó
f
SCLK
e
Stopped
f
SCLK
e
10 MHz
à
8 MHz
ó
2.0
à
1.4
ó
4.0
à
2.0
ó
mA (max)
mA (max)
5.0
à
2.5
ó
I
A
a
V
A
a
Supply Current
Stand-By Supply Current (I
D
a
a
I
A
a
)
f
CLK
e
8 MHz
à
6 MHz
ó
2.8
à
2.2
ó
4.0
à
3.5
ó
mA (max)
I
ST
Stand-By Mode Selected
f
SCLK
e
Stopped
f
CLK
e
Stopped
f
CLK
e
8 MHz
à
6 MHz
ó
5
à
5
ó
120
à
50
ó
m
A (max)
m
A (max)
f
SCLK
e
10 MHz
à
8 MHz
ó
f
CLK
e
Stopped
f
CLK
e
8 MHz
à
6 MHz
ó
V
A
a
e
5.5V
ON-Channel
e
5.5V
OFF-Channel
e
0V
ON-Channel
e
0V
OFF-Channel
e
5.5V
1.4
à
0.8
ó
1.4
à
0.8
ó
mA (max)
mA (max)
Multiplexer ON-Channel Leakage Current
0.1
1.0
à
3.0
ó
m
A (max)
1.0
à
3.0
ó
m
A (max)
Multiplexer OFF-Channel Leakage Current
V
A
a
e
5.5V
à
3.3V
ó
ON-Channel
e
5.5V
à
3.3V
ó
OFF-Channel
e
0V
ON-Channel
e
0V
OFF-Channel
e
5.5V
à
3.3V
ó
0.1
1.0
à
3.0
ó
m
A (max)
1.0
à
3.0
ó
m
A (max)
8
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