www.德州仪器.com
AMC7823
SLAS453A–APRIL2005–REVISEDOCTOBER2005
electricalcharacteristics:+3v(持续)
at–40°cto+85°c,av
DD
,dv
DD
,bv
DD
=3v,usingexternal1.25-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
compliancevoltageofpin1.92v
AV
DD
=2.7v,i
输出
=10mA
精确_i_输出
电源-supplyrejectionratio60db
voltagereference(v
REF
)
Internalreferencevoltage
(4)
at25°c1.2471.251.253v
internalreferencedrift–40°cto85°c±20ppm/°c
outputimpedanceofpinext_ref_在
10k
Ω
asinternalreferenceoutput
短的-circuitcurrent125
µ
一个
externalreferencevoltage1.201.28v
Externalreferenceinputresistance10k
Ω
Externalreferenceinputcapacitance5pF
TEMPERATURESENSOR
Temperaturerange–4085°C
resolution1.6°c
accuracy±2.0°c
LEVELOFPINGALRANDDAV
I
OH
=0.3ma2.4dv
DD
V
I
OL
=125
µ
a00.4v
digitalinput/输出,exceptpinglaranddav
V
IH
I
IH
=5
µ
a2.1bv
DD
+0.3v
V
IL
I
IL
=–5
µ
a00.6v
Logiclevel
V
OH
I
OH
=–3ma2.4bv
DD
V
V
OL
I
OL
=3ma00.4v
Inputcapacitance5pF
POWERSUPPLYREQUIREMENTS
电源-supplyvoltage
AV
DD
specifiedperformance2.7033.3v
DV
DD
specifiedperformance2.703.3v
BV
DD
(5)
specifiedperformance2.703.3v
Innormaloperation1015mA
QuiescentcurrentofAV
DD
allpower-down1ma
QuiescentcurrentofDV
DD
0.3ma
QuiescentcurrentofBV
DD
0.1ma
Powerdissipation60mW
TEMPERATURERANGE
Specifiedperformance–40+85°C
Storage–65+150°C
(4)bitgrefinamcstatus/configurationregisterdeterminestheinternalreferencevoltage.grefmustbeclearedwhenav
DD
isless
than5vandtheinternalreferenceisselected(看amcstatus/configurationregisterfordetails).
(5)bv
DD
mustbenotgreaterthanAV
DD
orDV
DD
.
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