ISL12032 Datasheet, PDF (25/26 Pages) Intersil Corporation – Low Power RTC with Battery Backed SRAM and 50/60 Cycle AC Input and Xtal Back-up

120VAC
50/60Hz
ISL12032
VIN (AC) = 1.5V_P-P TO VDD (MAX)
R1
CIN
R2
ISL12032
120VAC
50/60Hz
FIGURE 11. AC INPUT USING A TRANSFORMER SECONDARY
VDD
VIN (AC) = 1.5V_P-P TO VDD (MAX)
R1
C1
R2
CIN
ISL12032
FIGURE 12. USING THE V_DD SUPPLY TO GATE THE AC INPUT
.
25
FN6618.2
April 16, 2009