AS1361_1 datasheet(11/15 Pages) AMSCO

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AS1361/AS1362

Datasheet - D e t a i l e d D e s c r i p t i o n

The maximum power dissipation is calculated:

PDMAX = (TJ - TAMB)/(

θJC + θCA)(EQ 2)

Where:

TJ - TAMB is the temperature difference between the AS1361/AS1362 die junction and the surrounding air;

θJC is the thermal resistance of the package;

θCA is the thermal resistance through the PC board/copper traces/other materials to the surrounding air.

Note: Pin GND of the AS1361/AS1362 provides the electrical connection to system ground and also serves as a heat

sink. Connect pin GND to the system ground using a large pad or ground plane.

Noise Reduction

The AS1361/AS1362 noise bypass circuitry dramatically reduces output noise, exhibiting 9µVRMS of output voltage

noise with CBYPASS = 0.01µF and COUT = 1µF. Use an external 0.01µF bypass capacitor between pin BYPASS and pin

OUT (see Figure 1 on page 1).

Note: Startup time is minimized by internal power-on circuitry which pre-charges CBYPASS.

AS1361 데이터시트(PDF) 11 Page - ams AG