74HC4046A Datasheet, PDF (24/34 Pages) NXP Semiconductors – Phase-locked-loop with VCO

Philips Semiconductors
Phase-locked-loop with VCO
Product specification
74HC/HCT4046A
Fig.20 Definition of VCO frequency linearity:
∆V = 0.5 V over the V_CC range:
for VCO linearity
f‘₀ = ^f--1----⁺_2-----f--²-
linearity = -f--‘-⁰--f--‘^–-₀----f--⁰- × 100%
Fig.21 Frequency linearity as a function of R1, C1
and V_CC: R2 = ∞ and ∆V = 0.5 V.
 C1 = 40 pF
- - - -C1 = 1 µF
Fig.22 Power dissipation
versus the value of R1:
C_L = 50 pF;
R2 = ∞;
V_VCOIN = 1/2 V_CC;
T_amb = 25 °C.
1997 Nov 25
 C1 = 40 pF
- - - - C1 = 1 µF
Fig.23 Power dissipation
versus the value of R2:
C_L = 50 pF;
R1 = ∞;
V_VCOIN = GND = 0 V;
T_amb = 25 °C.
24
Fig.24 Typical dc power
dissipation of
demodulator sections
as a function of R_S:
R1 = R2 = ∞;
T_amb = 25 °C;
V_VCOIN = 1/2 V_CC.