參數(shù)資料
型號: LMX9820
廠商: National Semiconductor Corporation
英文描述: Bluetooth Serial Port Module
中文描述: 藍(lán)牙串行端口模塊
文件頁數(shù): 12/40頁
文件大小: 567K
代理商: LMX9820
www.national.com
12
L
6.0 Electrical Specifications
(Continued)
6.4 PERFORMANCE DATA (TYPICAL)
Table 17. Crystal/Oscillator Performance Characteristics
Symbol
Parameter
Condition
Min
Typ
Max
Unit
f
OSC
Crystal Oscillator Frequency
12
MHz
f
ACC1
Frequency Accuracy
Cumulative over operating
temperature range
-20
+20
ppm
t
OSC-ON
Oscillator Turn-On Time
VCC
applied, f
OSC
= 12 MHz,
C
ext
= 0.1
μ
F, settled to within
f
ACC
4
ms
V
OSC
Oscillator Input Voltage
External XO input
0.6
2.0
Vpp
ESR
Equivalent Series Resis-
tance
50
100
D
CYCLE
Duty Cycle
49
51
%
P
NOISE
Phase Noise
100Hz
-105
dBc/H
z
1000Hz
-125
dBc/H
z
BBCLK
Baseband Clock Output
Frequency
12
MHz
1.
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.
Figure 3. Modulation
Figure 4. Transmit Spectrum
Figure 5. Corresponding Eye Diagram
Figure 6. Synthesizer Phase Noise
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