參數(shù)資料
型號(hào)： LMX9820A
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(yè)數(shù)： 21/44頁(yè)
文件大小： 579K
代理商： LMX9820A
Revision 1.0
21
www.national.com
L
8.0 Digital Smart Radio
(Continued)
Figure 12. Frequency Offset with 12 pF/12 pF Capacitors
Figure 13. Frequency Offset with 10 pF/10 pF Capacitors
8.7.2 TCXO (Temperature Compensated Crystal
Oscillator)
The LMX9820A also can operate with an external TCXO
(Temperature Compensated Crystal Oscillator). The TCXO
signal is directly connected to the CLK+, shown in Table 23
on page 21.
1. Input Impedance
The LMX9820A CLK+ pin has in input impedance of 2 pF
capacitance in parallel with >400k
resistance.
2. NKG3184A TCXO
The LMX9820A has also been tested with the NKG3184A
TCXO. See Table 23 on page 21.
Table 23. TCXO NKG3184A
Specification
Value
Package
5.0 x 3.2 x 1.4 mm (4 pads)
Frequency
12.000 MHz
Stability
18 ppm at -30 to +85°C
(inclusive of all conditions)
Output Load
10k
/13 pF
Current Consumption
2.0 mA
Output Level
0.3Vp-p to 2.0Vp-p
Storage Temperature
-40 to +85°C
DC Cut Capacitor
Included in VC-TCXO
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