X9258_13 Datasheet, PDF (17/19 Pages) Intersil Corporation – Low Noise/Low Power/2-Wire Bus/256 Taps

Application Circuits (Continued)
R₁
R₂
–
V_O
V_S
+
R₃
R₄
All R_S = 10kΩ
V_O = G V_S
-1/2 ≤ G ≤ +1/2
FIGURE 15. ATTENUATOR
X9258
C
V_S
R
+
–
V_O
R₂
R₁
G_O = 1 + R₂/R₁
fc = 1/(2πRC)
FIGURE 16. FILTER
R₁
R₂
V_S
–
V_O
+
V_O = G V_S
G = - R₂/R₁
FIGURE 17. INVERTING AMPLIFIER
C₁
V_S
Z_IN
R₂
+
–
R₁
R₃
Z_IN = R₂ + s R₂ (R₁ + R₃) C₁ = R₂ + s Leq
(R₁ + R₃) >> R₂
FIGURE 18. EQUIVALENT L-R CIRCUIT
–
R₂
R₁
+
} ^RA
} ^RB
C
–
+
FREQUENCY ∝ R₁, R₂, C
AMPLITUDE ∝ R_A, R_B
FIGURE 19. FUNCTION GENERATOR
17
FN8168.6
December 15, 2011