Vcc = EN = 2.5V, −40˚C

≤ T

A

≤ +85˚C, unless otherwise specified

Symbol

Parameter

Conditions

Value

Units

Min

Typ

Max

PHASE NOISE CHARACTERISTICS

L

RF Synthesizer Normalized Phase

Noise Contribution

(Note 10)

TCXO Reference Source

RF_CPG Bit = 1

IF_PD Bit = 1

-219.0

dBc/

Hz

L

IF Synthesizer Normalized Phase

Noise Contribution

(Note 10)

TCXO Reference Source

IF_CPG Bit = 1

RF_PD Bit = 1

-214.0

dBc/

Hz

L

RF Synthesizer Single

Side Band Phase

Noise Measured

LMX2430

f

f = 10 kHz offset

f

Loop Bandwidth = 100 kHz

N

f

v

RF_CPG Bit = 1

IF_PD Bit = 1

T

(Note 11)

-90.30

dBc/

Hz

LMX2433

f

f = 10 kHz offset

f

Loop Bandwidth = 100 kHz

N

f

v

RF_CPG Bit = 1

IF_PD Bit = 1

T

(Note 11)

-88.90

dBc/

Hz

LMX2434

f

f = 10 kHz offset

f

Loop Bandwidth = 100 kHz

N

f

v

RF_CPG Bit = 1

IF_PD Bit = 1

T

(Note 11)

-85.60

dBc/

Hz

≥ P * (P−1), where P is the value of the prescaler selected.

Note 5: Refer to the LMX243x FinRF Sensitivity Test Setup section

Note 6: Refer to the LMX243x Charge Pump Test Setup section

Note 7: Refer to the Charge Pump Current Specification Definitions for details on how these measurements are made.

Note 8: Refer to the LMX243x OSCin Sensitivity Test Setup section

Note 9: Refer to the LMX243x Serial Data Input Timing section

measured at an offset frequency, f, ina1Hz bandwidth. The offset frequency, f, must be chosen sufficiently smaller than the PLL’s loop bandwidth, yet large enough

detector comparison frequency.

Note 11: The synthesizer phase noise is measured with the LMX2430TM/LMX2430SLE Evaluation boards and the HP8566B Spectrum Analyzer.

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