- 您現(xiàn)在的位置：買賣IC網(wǎng) > PDF目錄381310 > AS5502 (AUSTRIAMICROSYSTEMS AG) Multimode Powerline-Modem PDF資料下載
參數(shù)資料
| 型號(hào)： | AS5502 |
| 廠商： | AUSTRIAMICROSYSTEMS AG |
| 元件分類： | 調(diào)制器/解調(diào)器 |
| 英文描述： | Multimode Powerline-Modem |
| 中文描述： | 2.4 kbps DATA, MODEM, PDSO28 |
| 封裝： | SOIC-28 |
| 文件頁數(shù)： | 11/26頁 |
| 文件大?。?/td> | 315K |
| 代理商： | AS5502 |
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頁當(dāng)前第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頁第20頁第21頁第22頁第23頁第24頁第25頁第26頁
To establish the frequency modulation, the output of the mark/space up/down-counter gets
added to Nmark. There has to be a smooth frequency-change from mark to space and from
space to mark within half the bit-time with 3 intermediate frequencies.
BD1
BD2
Fspace-Fmark
Baud-Rate (CKTX)
0
0
600Hz
600Hz
1
0
1200Hz
1200Hz
0
1
600Hz
1200Hz
1
1
1200Hz
2400Hz
M/S-UDC
0,1,2,3,4
0,2,4,6,8
0,1,2,3,4
0,2,4,6,8
BDclk (UDC-CLK)
4800Hz
9600Hz
9600Hz
19200Hz
Example with MRK-REG=8 => Fmark=81.75kHz; BD1,2=0 => dF=BRate=600Hz:
545
546 547 548
549
548 547
546
545
BDR*8
TXD (H=mark)
N
Fsynth / 16
(kHz)
81.75
81.90
82.05
82.20
82.35
82.20
82.05
81.75
81.90
(L=space)
In receive-mode(TxEn=1), a constant number Nmix defined by BD1 gets added to Nmark
instead of the output of the M/S-UDC. This gives a constant frequency which is used as
Mixer-frequency to fold the FSK-signal down to 2.7kHz or 5.4kHz. According to the
mixer-frequency the IF-SC-CLK is defined by the timing-block (see 1.1.3).
BD1
BD2
IFcenter
IFbandw
IF-SC-CLK
0
X
2700Hz
1200Hz
57.6kHz
1
X
5400Hz
2400Hz
115.2kHz
Nmix
20
40
BDclk (UDC-CLK)
4800Hz
9600Hz
The second frequency-synthesiser which is a similar structure as described for generating the
FSK-frequencies, is generating the target-frequency for the SCCLK-PLL. To get no
disturbing components, the phase-jitter of the synthesiser has to be reduced by the PLL.
There is a capacitor needed as external low-pass filter, to define the frequency response of the
PLL-loop. To generate the right target-frequency, one half of modulation-depth which is a
factor of 2 or 4 dependent on BD1 has to be added to Nmark. Since the center-frequency is a
very critical parameter, there is a possibility implemented for adjustment by wafersort-trim.
BD1 BD2 Fspace-Fmark
(Fcenter-Fmark)/150Hz
0
X
600Hz
2
1
X
1200Hz
4
(Itrim=0 ... 3 defined at wafer-sort)
Npll
MRK_REG + 426 + Itrim + 2
MRK_REG + 426 + Itrim + 4
AS5501 / AS5502 Multimode Powerline Modem
Data Sheet
Rev A, May 2000
Page 10/25
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| AS6UA25616 | 2.3V to 3.6V 256K×16 Intelliwatt low-power CMOS SRAM with one chip enable(2.3V 到 3.6V 256K×16 Intelliwatt 低功耗 CMOS 靜態(tài)RAM（帶單片使能）) |
| AS6UA25616-BC | 2.3V to 3.6V 256K】16 Intelliwatt⑩ low-power CMOS SRAM with one chip enable |
| AS6UA25616-BI | 2.3V to 3.6V 256K】16 Intelliwatt⑩ low-power CMOS SRAM with one chip enable |
| AS6UA25616-TC | 2.3V to 3.6V 256K】16 Intelliwatt⑩ low-power CMOS SRAM with one chip enable |
| AS6UA25616-TI | 2.3V to 3.6V 256K】16 Intelliwatt⑩ low-power CMOS SRAM with one chip enable |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| AS5-50R0-F | 制造商:TT Electronics / IRC 功能描述: |
| AS550R0JLF | 功能描述:線繞電阻器 - 透孔 50 OHM 5% 5W RoHS:否 制造商:Bourns 電阻:10 Ohms 容差:5 % 功率額定值:7 W 溫度系數(shù):200 PPM / C 系列:FW 端接類型:Axial 工作溫度范圍:- 55 C to + 155 C 尺寸:9.5 mm Dia. x 26 mm L 封裝:Ammo 產(chǎn)品:Power Resistors Wirewound High Energy |
| AS5510 | 制造商:AMSCO 制造商全稱:austriamicrosystems AG 功能描述:Linear Hall Sensor with IC Output |
| AS5510 AB | 制造商:ams 功能描述:Adapter Board |
| AS5510 DB | 制造商:ams 功能描述:BOARD DEMO FOR AS5510 制造商:ams 功能描述:Demo Board |
發(fā)布緊急采購，3分鐘左右您將得到回復(fù)。