November 2013
LMK2430/33/34 Family
SNAU049A
7
Copyright © 2013, Texas Instruments Incorporated
www.ti.com
LMX243x Board Information
Parameter LMX2430
LMX2433
LMX2434
VCO Frequency
(MHz)
1600 – 1675
3200 - 3400
4690 - 4890
VCO Gain
(MHz/V)
32 90 94
Charge Pump Gain (mA)
4
4
4
VCO Input Capacitance
39
22
12
Phase Detector Frequency (MHz)
1
1
1
OSCin Frequency (MHz)
100
100
100
Loop Bandwidth (kHz)
27.9
31.1
41.2
Phase Margin (deg)
56.8
59.6
58.4
Gamma 0.57
0.90
0.87
T3/T1 Ratio (%)
220.8
177.1
213.9
C1_LF (nF)
0.18
0.27
0.1
C2_LF (nF)
6.8
10
3.9
C3_LF (nF)
1
1
1
C4_LF (nF)
Open
Open
Open
R2_LF (Kohm)
2.2
1.8
3.3
R3_LF (Kohm)
0.82
0.82
0.68
R4_LF (Kohm)
0
0
0
Closed Loop Transfer Function
-60
-40
-20
0
20
40
60
80
1.E+02
1.E+03
1.E+04
1.E+05
1.E+06
1.E+07
Offset (Hz)
C
los
e
d Loop G
a
in (
d
B
)
LMX2430
LMX2433
LMX2434
