參數(shù)資料
型號(hào)： LM12438CIWMX
廠商： NATIONAL SEMICONDUCTOR CORP
元件分類： 模擬信號(hào)調(diào)理
英文描述： SPECIALTY ANALOG CIRCUIT, PDSO28
封裝： SOP-28
文件頁(yè)數(shù)： 78/80頁(yè)
文件大?。?/td> 1552K
代理商： LM12438CIWMX
20 Electrical Specifications (Continued)
222 Converter Dynamic Characteristics
The following specifications apply only to the LM12434 and LM12438 for VAa e
VDa e 5V AGND e DGND e 0V VREFa e 4096V VREFb e 0V 12-bit a sign conversion mode fCLK e 80 MHz
throughput rate e 1333 kHz RS e 25X source impedance for VREFa and VREFb s 25X fully-differential input with fixed
2048V common-mode voltage and minimum acquisition time unless otherwise specified Boldface limits apply for TA e
TJ e TMIN to TMAX all other limits TA e TJ e 25 C (Notes 6 7 8 and 9) (Continued)
Symbol
Parameter
Conditions
Typical
Limits
Units
(Note 10)
(Note 11)
(Limit)
IMD
Two Tone Intermodulation Distortion
VIN e g4096V (Note 20)
Differential Input
f1 e 19190 kHz
b
82
dBc
f2 e 19482 kHz
IMD
Two Tone Intermodulation Distortion
VIN e 4096 Vpp
Single Ended Input
f1 e 19190 kHz
b
80
dBc
f2 e 19482 kHz
Multiplexer Channel-to-Channel Crosstalk
VIN e 4096 VPP
fIN e 5 kHz
fCROSSTALK e 40 kHz
b
90
dBc
LM12434 MUXOUT Only
and LM12438 MUX
plus Converter (Note 21)
tPU
Power-Up Time
10
ms
tWU
Wake-Up Time
(Note 22)
2
ms
223 DC Characteristics
The following specifications apply to the LM12434 and LM12 L 438 for VAa e VDa e 5V 33V
AGND e DGND e 0V VREFa e 4096V 25V VREFb e 0V fCLK e 80 MHz 6 MHz and minimum acquisition time unless
otherwise specified Boldface limits apply for TA e TJ e TMIN to TMAX all other limits TA e TJ e 25 C (Notes 6 7
and 8)
Symbol
Parameter
Conditions
Typical
Limits
Units
(Note 10)
(Note 11)
(Limit)
IDa
VDa Supply Current
fCLK e 8 MHz 6 MHz
fSCLK e Stopped
20 14
mA (max)
fSCLK e 10 MHz 8 MHz
40 20
50 25
mA (max)
IAa
VAa Supply Current
fCLK e 8 MHz 6 MHz
28 22
40 35
mA (max)
IST
Stand-By Supply Current (IDa a IAa)
Stand-By Mode Selected
fSCLK e Stopped
fCLK e Stopped
5 5
m
A (max)
fCLK e 8 MHz 6 MHz
120 50
m
A (max)
fSCLK e 10 MHz 8 MHz
fCLK e Stopped
14 08
mA (max)
fCLK e 8 MHz 6 MHz
14 08
mA (max)
Multiplexer ON-Channel Leakage Current
VAa e 55V
ON-Channel e 55V
OFF-Channel e 0V
01
10 30
m
A (max)
ON-Channel e 0V
OFF-Channel e 55V
10 30
m
A (max)
Multiplexer OFF-Channel Leakage Current
VAa e 55V 33V
ON-Channel e 55V 33V
OFF-Channel e 0V
01
10 30
m
A (max)
ON-Channel e 0V
OFF-Channel e 55V 33V
10 30
m
A (max)
8
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