MAX2608EUT-T Maxim Integrated Products, MAX2608EUT-T Datasheet - Page 10

• Manufacturer Part Number: MAX2608EUT-T
• Description: RF Wireless Misc 300 to 500MHz VCO wi th Differential Outp
• Manufacturer: Maxim Integrated Products

45MHz to 650MHz, Integrated IF
VCOs with Differential Output
Figure 4. MAX2608 Required Inductance vs. Desired VCO Fixed Frequency
10
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15.0
41.0
40.0
38.0
37.0
36.0
35.0
34.0
33.0
31.0
30.0
29.0
28.0
27.0
26.0
25.0
24.0
23.0
22.0
21.0
19.0
18.0
17.0
16.0
13.0
11.0
10.0
32.0
20.0
14.0
12.0
9.0
300
310 320 330 340 350 360 370 380 390 400 410 420
REQUIRED INDUCTANCE vs. DESIRED VCO FIXED FREQUENCY
INDUCTOR VALUE
MOUNTED ON EV KIT
THE INDUCTANCE LISTED IS THE PRECISE NOMINAL INDUCTANCE VALUE
R LOAD = 100Ω||50Ω (100Ω RESISTIVE PULL-UP PARALLELED WITH 50Ω
CAN TUNE TO THE DESIRED FIXED FREQUENCY, OVER ALL OPERATING
MAX2608
REQUIRED FROM IND TO GND IN ORDER TO GUARANTEE THE VCO
PCB PARASITIC SHUNT CAPACITANCE (IND TO GND) = 0.45pF
VNA IMPEDANCE), UNUSED OUTPUT TERMINATED IN 50Ω,
VALUES (±2% INDUCTOR AND IC PROCESS VARIATION).
CONDITIONS AND WORST-CASE COMPONENT
420 430 440 450 460
EFFECTIVE INDUCTANCE
FROM IND TO GND
MEASUREMENT CONDITIONS
V CC = 2.75V, T A = 25°C,
470
480
490 500