- 您現(xiàn)在的位置：買賣IC網(wǎng) > PDF目錄361044 > LMX9820ASMX (NATIONAL SEMICONDUCTOR CORP) Bluetooth Serial Port Module PDF資料下載
參數(shù)資料
| 型號： | LMX9820ASMX |
| 廠商： | NATIONAL SEMICONDUCTOR CORP |
| 元件分類： | 通信及網(wǎng)絡(luò) |
| 英文描述： | Bluetooth Serial Port Module |
| 中文描述： | SPECIALTY TELECOM CIRCUIT, PBGA116 |
| 封裝： | 10.10 X 14.10 MM, 2 MM HEIGHT, LGA-116 |
| 文件頁數(shù)： | 20/44頁 |
| 文件大小： | 579K |
| 代理商： | LMX9820ASMX |
第1頁第2頁第3頁第4頁第5頁第6頁第7頁第8頁第9頁第10頁第11頁第12頁第13頁第14頁第15頁第16頁第17頁第18頁第19頁當前第20頁第21頁第22頁第23頁第24頁第25頁第26頁第27頁第28頁第29頁第30頁第31頁第32頁第33頁第34頁第35頁第36頁第37頁第38頁第39頁第40頁第41頁第42頁第43頁第44頁
www.national.com
20
Revision 1.0
L
8.0 Digital Smart Radio
(Continued)
TEW Crystal
The LMX9820A has been tested with the TEW TAS-4025A
crystal, see Table 21 on page 20 for specification.
Because the internal capacitance of the crystal circuit is 8
pF and the load capacitance is 16 pF, 12 pF is a good start-
ing point for both Ct1 and Ct2. The 2480 MHz RF fre-
quency offset is then tested. Figure 12 on page 21 shows
the RF frequency offset test results.
Figure 12 on page 21 shows the results are -20 kHz off the
center frequency, which is -1 ppm. The pullability of the
crystal is 2 ppm/pF, so the load capacitance must be
decreased by about 1.0 pF. By changing Ct1 or Ct2 to
10 pF, the total load capacitance is decreased by 1.0 pF.
Figure 13 on page 21 shows the frequency offset test
resuts. The frequency offset is now zero with Ct1 = 10 pF,
Ct2 = 10 pF.
Reference Table 22 on page 20 for crystal tuning values
used on Austin Development Board with TEW crystal.
Table 21. TEW TAS-4025A
Specification
Value
Package
4.0 x 2.5 x 0.65 mm (4 pads)
Frequency
12.000 MHz
Mode
Fundamental
Stability
>15 ppm @ -40 to +85°C
C
L
Load Capacitance
16 pF
ESR
80
max.
C
0
Shunt Capacitance
5 pF
Drive Level
50 ±10uV
Pullability
2 ppm/pF min
Storage Temperature
-40 to +85°C
Table 22. TEW on Arizona Board
Reference
LMX9820A
Ct1
10 pF
Ct2
10 pF
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| LMX9820A | Bluetooth Serial Port Module |
| LMX9820ASM | Bluetooth Serial Port Module |
| LMX9820 | Bluetooth Serial Port Module |
| LMX9820SB | Bluetooth Serial Port Module |
| LMX9820SBX | Bluetooth Serial Port Module |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| LMX9820ASMX/NOPB | 制造商:Texas Instruments 功能描述:Bluetooth Class II 3.3V 0.704Mbps 116-Pin LTCC T/R 制造商:Texas Instruments 功能描述:MODULE BLUETOOTH SERIAL PORT SMD |
| LMX9820SB | 制造商:Texas Instruments 功能描述: 制造商:Texas Instruments 功能描述:MODULE BLUE TOOTH 116-LTCC 制造商:Texas Instruments 功能描述:BLUETOOTH MODULE 2.4GHZ 704KBPS |
| LMX9820SBX | 制造商:NSC 制造商全稱:National Semiconductor 功能描述:Bluetooth Serial Port Module |
| LMX9830 | 制造商:NSC 制造商全稱:National Semiconductor 功能描述:BluetoothTM Serial Port Module |
| LMX9830DONGLE | 功能描述:藍牙/802.15.1 開發(fā)工具 LMX9830 BLUETOOTH EVAL KIT RoHS:否 制造商:Panasonic Electronic Components 產(chǎn)品:Bluetooth Evaluation Kit 工具用于評估:PAN1721 頻率:2.4 GHz 接口類型:I2C 工作電源電壓:2 V to 3.6 V |
發(fā)布緊急采購，3分鐘左右您將得到回復。