MAX2608EUT-T Maxim Integrated Products, MAX2608EUT-T Datasheet - Page 11

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

Figure 5. MAX2609 Required Inductance vs. Desired VCO Fixed Frequency
______________________________________________________________________________________
14.0
13.5
12.5
12.0
11.5
11.0
10.5
13.0
10.0
9.5
8.0
7.0
6.5
6.0
5.0
4.5
4.0
3.5
9.0
8.5
7.5
5.5
500
510 520 530 540 550
REQUIRED INDUCTANCE vs. DESIRED VCO FIXED FREQUENCY
45MHz to 650MHz, Integrated IF
VCOs with Differential Output
DESIRED VCO FIXED FREQUENCY (MHz)
INDUCTOR VALUE
MOUNTED ON EV KIT
560
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
MAX2609
REQUIRED FROM IND TO GND IN ORDER TO GUARANTEE THE VCO
570 580 590 600 610 620 630
PCB PARASITIC SHUNT CAPACITANCE (IND TO GND) = 0.45pF
VNA IMPEDANCE), UNUSED OUTPUT TERMINATED IN 50Ω,
VALUES (±2% INDUCTOR AND IC PROCESS VARIATION).
EFFECTIVE INDUCTANCE
FROM IND TO GND
CONDITIONS AND WORST-CASE COMPONENT
MEASUREMENT CONDITIONS
V CC = 2.75V, T A = 25°C,
640 650
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