LMX2531_14 Datasheet, PDF (10/48 Pages) Texas Instruments – High-Performance Frequency Synthesizer System

LMX2531
SNAS252S – OCTOBER 2005 – REVISED DECEMBER 2014
www.ti.com
Electrical Characteristics (continued)
(V_CC = 3.0 V, –40°C ≤ T_A ≤ 85 °C; except as specified.)
PARAMETER
VCO PHASE NOISE ⁽⁵⁾
L(f)_Fout
Phase Noise
(LMX2531LQ1146E)
f_Fout = 1146 MHz
DIV2 = 0
f_Fout = 573 MHz
DIV2 = 1
L(f)_Fout
Phase Noise
(LMX2531LQ1226E)
f_Fout = 1226 MHz
DIV2 = 0
f_Fout = 613 MHz
DIV2 = 1
L(f)_Fout
Phase Noise
(LMX2531LQ1312E)
f_Fout = 1314 MHz
DIV2 = 0
f_Fout = 657 MHz
DIV2 = 1
L(f)_Fout
Phase Noise
(LMX2531LQ1415E)
f_Fout = 1415 MHz
DIV2 = 0
f_Fout = 707.5 MHz
DIV2 = 1
L(f)_Fout
Phase Noise
(LMX2531LQ1500E)
f_Fout = 1500 MHz
DIV2 = 1
f_Fout = 750 MHz
DIV2 = 1
TEST CONDITIONS
10-kHz Offset
100-kHz Offset
1-MHz Offset
5-MHz Offset
10-kHz Offset
100-kHz Offset
1-MHz Offset
5-MHz Offset
10-kHz Offset
100-kHz Offset
1-MHz Offset
5-MHz Offset
10-kHz Offset
100-kHz Offset
1-MHz Offset
5-MHz Offset
10-kHz Offset
100-kHz Offset
1-MHz Offset
5-MHz Offset
10-kHz Offset
100-kHz Offset
1-MHz Offset
5-MHz Offset
10-kHz Offset
100-kHz Offset
1-MHz Offset
5-MHz Offset
10-kHz Offset
100-kHz Offset
1-MHz Offset
5-MHz Offset
10-kHz Offset
100-KHz Offset
1-MHz Offset
5-MHz Offset
10-kHz Offset
100-kHz Offset
1-MHz Offset
5-MHz Offset
MIN
TYP
MAX UNIT
–96
–121
–142
–156
–101
–126
–147
–156
–95
–121
–142
–155
–101
–126
–147
–155
–95
–121
–140
–154
–101
–126
–146
–154
–95
–121
–141
–154
–100
–126
–146
–154
–97
–120
–142
–155
–103
–126
–131
–155
dBc/Hz
dBc/Hz
dBc/Hz
dBc/Hz
dBc/Hz
(5) The VCO phase noise is measured assuming that the loop bandwidth is sufficiently narrow that the VCO noise dominates. The
maximum limits apply only at center frequency and over temperature, assuming that the part is reloaded at each test frequency. Over
frequency, the phase noise can vary 1 to 2 dB, with the worst case performance typically occurring at the highest frequency. Over
temperature, the phase noise typically varies 1 to 2 dB, assuming the part is reloaded.
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