www.德州仪器.com
AMC7823
SLAS453A–APRIL2005–REVISEDOCTOBER2005
electricalcharacteristics:+5v(持续)
at–40°cto+85°c,av
DD
=5v,dv
DD
=5v,bv
DD
=3vto5v,usingexternal2.5-vreference(unlessotherwisenoted).
AMC7823
PARAMETERCONDITIONSMINTYPMAXUNITS
PRECISIONCURRENTSOURCE
outputcurrentrange0.0110ma
OutputcurrentaccuracyI
输出
=100
µ
a99.5100.0100.5
µ
一个
OutputcurrentdriftI
输出
=100
µ
a40ppm/°c
OutputimpedanceI
输出
=100
µ
A100M
Ω
compliancevoltageofpin34.25v
I
输出
=10mA
精确_i_输出
电源-supplyrejectionratio60db
voltagereference(v
REF
)
Internalreferencevoltage
(4)
at25°c2.4952.502.505v
internalreferencedrift–40°cto85°c±15ppm/°c
outputimpedanceofpinext_ref_在
10k
Ω
asinternalreferenceoutput
短的-circuitcurrent250
µ
一个
externalreferencevoltage1.202.55v
Internalreferenceselected10k
Ω
Externalreferenceinputresistance
internalreferencede-selected1m
Ω
Externalreferenceinputcapacitance5pF
TEMPERATURESENSOR
Temperaturerange–4085°C
ResolutionV
REF
=2.5v3.2°c
V
REF
=1.25v1.6°c
AccuracyV
REF
=2.5v±4°c
V
REF
=1.25v
±
2.0°c
LEVELOFPINGALRANDDAV
I
OH
=0.7ma4dv
DD
V
I
OL
=180
µ
a00.4v
digitalinput/输出,exceptpingalranddav
V
IH
BV
DD
=5v,i
IH
=5
µ
a3.5bv
DD
+0.3v
V
IL
BV
DD
=5v,i
IL
=–5
µ
a00.8v
Logiclevel
V
OH
BV
DD
=5v,i
OH
=–3mA4BV
DD
V
V
OL
BV
DD
=5v,
OL
=3ma00.4v
V
IH
BV
DD
=3v,i
IH
=5
µ
a2.1bv
DD
+0.3v
V
IL
BV
DD
=3v,i
IL
=–5
µ
a00.6v
Logiclevel
V
OH
BV
DD
=3v,i
OH
=–3ma2.4bv
DD
V
V
IL
BV
DD
=3v,i
OL
=3ma00.4v
Inputcapacitance5pF
(4)bitgrefinamcstatus/configurationregisterdeterminestheinternalreferencevoltage.theinternalv
REF
=2.5vwhengref=1,
andtheinternalV
REF
=1.25vwhengref=0(看amcstatus/configurationregisterfordetails).
4
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