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CXA1843Q

Notes on Operation

(1) In circuit board layout, it is necessary that the AGND and DGND patterns be as large as possible and that

double or more layer pattern be used to make low impedance.

chip capacitors those are 0.1µF or more, as close to the pin as possible.

(7) As shown in the Block Diagram, the amplifier input and output are internally connected to the REFOUT

and REFFB pins. To generate REFFB voltage for the reference voltage of A/D converter, the connection

of an external PNP transistor (hFE

≥ 100 (typ.)) is required as shown in the Application Circuit.