LMX9820SB/NOPB National Semiconductor, LMX9820SB/NOPB Datasheet - Page 12

• Manufacturer Part Number: LMX9820SB/NOPB
• Manufacturer: National Semiconductor

Specifications of LMX9820SB/NOPB

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6.0 Electrical Specifications
1.
6.4 PERFORMANCE DATA (TYPICAL)
Symbol
f
f
t
V
ESR
D
P
BBCLK
OSC
ACC
OSC-ON
OSC
NOISE
CYCLE
Frequency accuracy dependent on crystal or oscillator chosen. Crystal/oscillator must have cumulative accuracy
specifications of +15 ppm to provide margin for frequency drift with ageing and temperature.
1
Figure 4. Transmit Spectrum
Parameter
Crystal Oscillator Frequency
Frequency Accuracy
Oscillator Turn-On Time
Oscillator Input Voltage
Equivalent Series Resis-
tance
Duty Cycle
Phase Noise
Baseband Clock Output
Frequency
Figure 3. Modulation
Table 17. Crystal/Oscillator Performance Characteristics
(Continued)
Condition
Cumulative over operating
temperature range
VCC applied, f
C
f
External XO input
100Hz
1000Hz
ACC
ext
= 0.1 F, settled to within
12
OSC
= 12 MHz,
Figure 5. Corresponding Eye Diagram
Figure 6. Synthesizer Phase Noise
Min
-20
0.6
49
Typ
12
50
12
4
Max
-105
-125
+20
100
2.0
51
dBc/H
dBc/H
MHz
MHz
Unit
ppm
Vpp
ms
%
z
z