74hc7046a NXP Semiconductors, 74hc7046a Datasheet - Page 30

• Manufacturer Part Number: 74hc7046a
• Description: Phase-locked-loop With Lock Detector
• Manufacturer: NXP Semiconductors

Philips Semiconductors
December 1990
Phase-locked-loop with lock detector
(1) To obtain optimum VCO performance, C1 must be as small as possible but larger than 100 pF.
(2) Interpolation for various values of R1 can be easily calculated because a constant R1C1 product will produce
Fig.27 Typical value of VCO centre frequency (f
almost the same VCO output frequency.
T
amb
= 25 C.
o
) as a function of C1: R2 = ; V
30
VCOIN
74HC/HCT7046A
= 1/2 V
CC
Product specification
; INH = GND;