Datasheet

45MHz to 650MHz, Integrated IF
VCOs with Differential Output
MAX2606
REQUIRED INDUCTANCE vs. DESIRED VCO FIXED FREQUENCY
790
740
690
640
590
540
490
440
390
340
290
240
190
REQUIRED INDUCTANCE (nH)
75
80
85 90 95 100
105
110
115 120 125 130
135
EFFECTIVE INDUCTANCE
FROM IND TO GND
INDUCTOR VALUE
MOUNTED ON EV KIT
140
70 140
145 150
MEASUREMENT CONDITIONS
V
CC
= 2.75V, T
A
= 25°C,
R
LOAD
= 100Ω||50Ω (100Ω RESISTIVE PULL-UP PARALLELED WITH 50Ω
VNA IMPEDANCE), UNUSED OUTPUT TERMINATED IN 50Ω,
PCB PARASITIC SHUNT CAPACITANCE (IND TO GND) = 0.45pF
THE INDUCTANCE LISTED IS THE PRECISE NOMINAL INDUCTANCE VALUE
REQUIRED FROM IND TO GND IN ORDER TO GUARANTEE THE VCO
CAN TUNE TO THE DESIRED FIXED FREQUENCY, OVER ALL OPERATING
CONDITIONS AND WORST-CASE COMPONENT
VALUES (±2% INDUCTOR AND IC PROCESS VARIATION).
DESIRED VCO FIXED FREQUENCY (MHz)
Figure 2. MAX2606 Required Inductance vs. Desired VCO Fixed Frequency
MAX2605–MAX2609
8
Maxim Integrated