6

SA60U

P r o d u c t I n n o v a t i o n F r o m

SA60

untilreachingpin6.ConnectallVccpowersupplyandinputsignalrelatedgroundconnectionstoANALOG

GNDkeepingconductorsseparateuntilreachingpin1.Donotallowgroundloopstoformbymakingadditional

groundconnectionsatthelowsideofthephysicalpowersupplies.Ifgroundplaneisuseddonotallowmore

than1mAtoflowthroughit.

3. Bewareofcapacitivecouplingbetweenoutputconnectionsandsignalinputsthroughtheparasiticcapacitance

betweenlayersinmultilayerPCBdesigns.

4. Donotrunsmallsignaltracesbetweenthepinsoftheoutputsection(pins8-12).

CURRENTSENSE

Therearetwoloadcurrentsensingpins,ISENSEAandISENSEB.ThetwopinscanbeshortedtoPOWERGND

inthevoltagemodeconnectionbutbothmustbeusedinthecurrentmodeconnection.Itisrecommendedthat

RSENSEresistorsbenon-inductive.LoadcurrentflowsintheISENSEpins.TheSA60hasnointernalcurrent

limit.

TRANSIENTSUPPRESSION

AnRCnetworkofa100pFCapacitorandaoneohmresistorisrequiredasshownintheexternalconnectiondia-

gramonpage1.Thisnetworkassuresproperoperationundervariousloads.Minimalpowerisdissipatedinthe

resistor.

CONTACTINGCIRRUSLOGICSUPPORT

ForallApexPrecisionPowerproductquestionsandinquiries,calltollfree800-546-2739inNorthAmerica.

Forinquiriesviaemail,pleasecontacttucson.support@cirrus.com.

InternationalcustomerscanalsorequestsupportbycontactingtheirlocalCirrusLogicSalesRepresentative.

Tofindtheonenearesttoyou,gotowww.cirrus.com

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