X9440 Datasheet, PDF (18/21 Pages) Intersil Corporation – Mixed Signal with SPI Interface

BASIC APPLICATION (continued)
Programmable Level Detector (alternate technique)
+
V_S
R₁ {
R₂ {
X9440
–
+
V_OUT
=
High for
V_S < –
R_-----1-
R₂
V_R
V_OUT
=
Low for
V_S > –
R_-----1-
R₂
V_R
R1 + R2 = RPOT
+
V_R
V_OUT
V_OUT
-R₁
R₂
V_R
V_CC
V_SS=
V_S
Programmable Time Delay with Memory
+5V
V_H
V_W
–
+
V_L
V_NI
V_S
R
C
V_OUT
V_OUT
V_S
V_NI
V_OUT
+5v
t
+5v
V_W
t
+5v
t
Dt
∆t
=
RC
ln


5^----V^{----5--–--V--}V^-----_W^{---}
18
FN8200.0
March 28, 2005