Datasheet

45MHz to 650MHz, Integrated IF
VCOs with Differential Output
MAX2607
REQUIRED INDUCTANCE vs. DESIRED VCO FIXED FREQUENCY
160
150
140
130
120
110
100
90
80
70
60
50
40
REQUIRED INDUCTANCE (nH)
160
170
180 190 200 210 220
230
240 250 260 270 280
INDUCTOR VALUE
MOUNTED ON EV KIT
30
150
290
300
170
EFFECTIVE INDUCTANCE
FROM IND TO GND
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 3. MAX2607 Required Inductance vs. Desired VCO Fixed Frequency
MAX2605–MAX2609
Maxim Integrated
9