Data Sheet

FSC‐BT630Datasheet
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‐20‐
E
NOB
‐  Effectivenumberofbits,differentialmode,12‐bitresolution,
1/1gain,3μsacquisitiontime,crystalHFCLK,200ksps
‐ 9‐Bit
S
NDR
‐  Peaksignaltonoiseanddistortionratio,differentialmode,12‐
bitresolution,1/1gain,3μsacquisitiontime,crystalHFCLK,200ksps
‐ 56 ‐ dB
S
FDR
‐  Spuriousfreedynamicrange,differentialmode,12‐bit
resolution,1/1gain,3μsacquisitiontime,crystalHFCLK,200ksps
‐ 70‐dBc
R
LADDER
‐  Ladderresistance ‐ 160 ‐ kΩ
  
a:Digitaloutputcodeatzerovoltdifferentialinput.
33:Whent
ACQ
is10usorlonger,andifDC/DCisactive,itwillbeallowedtoworkinrefreshmodeifnootherresourceis
requiringahighqualitypowersupplyfrom1V3.Ift
ACQ
issmallerthan10usandDC/DCisactive,

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Note:SAADCaveragecurrentcalculationforagivenapplicationisbasedonthesampleperiod,conversionand
acquisitiontime(tconvandtACQ)andconversionandidlecurrent(IADC,CONVandIADC,IDLE).Forexample,sampling
at4kHzgivesasampleperiodof250μs.The averagecurrentconsumptionwouldthenbe:
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TypicalconnectiondiagramusingtheADC
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 5.5SPIElectricalspecification
5.5.1SPImasterinterface
Table9:SPImasterinterfaceelectricalspecifications 
Parameter Min Typ Max Unit
f
SPI
‐  BitratesforSPI
a
‐‐8
b
 Mbps
I
SPI,2Mbps
‐  RuncurrentforSPI,2Mbps ‐ ‐ 50 μA
I
SPI,8Mbps
‐  RuncurrentforSPI,8Mbps‐‐50μA
I
SPI,IDLEIdle
‐  currentforSPI(STARTed,noCSNactivity) ‐ <1 ‐ μA
t
SPI,START,LP
‐  TimefromwritingTXDregistertotransmissionstarted,low
powermode‐
t
SPI,START,CL

+
t
START_HFINT

‐ μS