X9279_09 Datasheet, PDF (16/18 Pages) Intersil Corporation – Single Digitally-Controlled (XDCP™) Potentiometer

Application Circuits
V_S
+
V_O
–
R₂
R₁
V_O = (1+R₂/R₁)V_S
NON-INVERTING AMPLIFIER
R₁
R₂
V_S
100kΩ
–
V_O
+
10kΩ
TL072
10kΩ
10kΩ
+12V
-12V
OFFSET VOLTAGE ADJUSTMENT
X9279
V_IN
317
V_O (REG)
R₁
I_adj
R₂
V_O (REG) = 1.25V (1+R₂/R₁)+I_adj R₂
VOLTAGE REGULATOR
V_S
–
V_O
+
R₁ R₂
V_UL = {R₁/(R₁+R₂)} V_O(max)
RL_L = {R₁/(R₁+R₂)} V_O(min)
COMPARATOR WITH HYSTERISIS
R₁
R₂
–
V_S
+
V_O
R₃
R_{4 R1 = R2 = R3 = R4 = 10kΩ}
V_O = G V_S
-1/2 ≤ G ≤ +1/2
ATTENUATOR
C
V_S
R
+
–
V_O
R₂
R₁
G_O = 1 + R₂/R₁
fc = 1/(2πRC)
FILTER
16
FN8175.4
September 23, 2009