LMX2542 Datasheet, PDF (7/22 Pages) National Semiconductor (TI) – PLLatinum Cellular and GPS Frequency Synthesizer System with Integrated VCO

Electrical Characteristics (Continued)
V_CC = V_DD = CE = 2.8V, T_A = +25˚C, unless otherwise specified
Symbol
Parameter
Conditions
RF VCO
SPURS_RF
RF Synthesizer Reference Spurs
HS_RF
RF VCO Harmonic Suppression
t_RFLOCK
Channel Switch Lock Time
(Note 6)
IF SYNTHESIZER SYSTEM PARAMETERS
f_Fin
IF Synthesizer Operating Frequency
(Note 7)
f_φIF
p_Fin
I_CPoutIF
IF Synthesizer Phase Detector
Frequency
IF Synthesizer Input Sensitivity
IF Synthesizer Charge Pump Output
Current
REFERENCE OSCILLATOR PARAMETERS
f_OSCin
Reference Oscillator Input Operating
Frequency
(Note 8)
v_OSCin
Reference Oscillator Input Sensitivity
OSC_FREQ Bit = 0 or 1
IF_EN Bit = 0
2^ND Harmonic
OB_CRL[1:0] Word = 11
3^RD Harmonic
OB_CRL[1:0] Word = 11
f_INITIAL = 2087.73 MHz
f_FINAL = 2155.14 MHz
SPI_DEF Bit = 1
IF_FREQ[1:0] Word = 00
SPI_DEF Bit = 1
IF_FREQ[1:0] Word = 01
(Default)
SPI_DEF Bit = 1
IF_FREQ[1:0] Word = 10
IF_CUR[1:0] Word = 00
IF_CUR[1:0] Word = 01
IF_CUR[1:0] Word = 10
IF_CUR[1:0] Word = 11
OSC_FREQ Bit = 0
OSC_FREQ Bit = 1
Value
Units
Min
Typ
Max
−75 dBc
−25 dBc
−25 dBc
1.0
1.3
ms
170.76
367.20
MHz
MHz
440.76
MHz
120
kHz
-12
100
200
300
800
0
dBm
µA
µA
µA
µA
19.20
MHz
19.68 MHz
0.2
V_CC
V_PP
7
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