X9401 Datasheet, PDF (17/20 Pages) Intersil Corporation – Low Noise/Low Power/SPI Bus

Application Circuits
Noninverting Amplifier
V_S
+
–
V_O
R₂
R₁
V_O = (1+R₂/R₁)V_S
X9401
Voltage Regulator
V_IN
317
V_O (REG)
R₁
I_adj
R₂
V_O (REG) = 1.25V (1+R₂/R₁)+I_adj R₂
Offset Voltage Adjustment
R₁
R₂
V_S
–
100kΩ
+
V_O
TL072
10kΩ
10kΩ
10kΩ
+5V
Comparator with Hysteresis
V_S
–
V_O
+
R₁ R₂
V_UL = {R₁/(R₁+R₂)} V_O(max)
V_LL = {R₁/(R₁+R₂)} V_O(min)
Attenuator
R₁
R₂
–
V_S
+
V_O
R₃
R_{4 All RS = 10kΩ}
V_O = G V_S
-1/2 ≤ G ≤ +1/2
Filter
C
V_S
+
–
V_O
R
R₂
R₁
G_O = 1 + R₂/R₁
fc = 1/(2πRC)
17
FN8190.2
September 23, 2005