- 您現(xiàn)在的位置：買賣IC網(wǎng) > PDF目錄9166 > LMK04010BISQE/NOPB (National Semiconductor)IC CLOCK COND 1.2GHZ W/PLL 48LLP PDF資料下載
參數(shù)資料
| 型號(hào)： | LMK04010BISQE/NOPB |
| 廠商： | National Semiconductor |
| 文件頁數(shù)： | 49/65頁 |
| 文件大?。?/td> | 0K |
| 描述： | IC CLOCK COND 1.2GHZ W/PLL 48LLP |
| 標(biāo)準(zhǔn)包裝： | 1 |
| 系列： | PowerWise® |
| 類型： | 時(shí)鐘調(diào)節(jié)器 |
| PLL： | 是 |
| 輸入： | LVCMOS |
| 輸出： | 2VPECL，LVPECL |
| 電路數(shù)： | 1 |
| 比率 - 輸入:輸出： | 2:5 |
| 差分 - 輸入:輸出： | 是/是 |
| 頻率 - 最大： | 1.296GHz |
| 除法器/乘法器： | 是/是 |
| 電源電壓： | 3.15 V ~ 3.45 V |
| 工作溫度： | -40°C ~ 85°C |
| 安裝類型： | 表面貼裝 |
| 封裝/外殼： | 48-WFQFN 裸露焊盤 |
| 供應(yīng)商設(shè)備封裝： | 48-LLP（7x7） |
| 包裝： | 標(biāo)準(zhǔn)包裝 |
| 產(chǎn)品目錄頁面： | 1275 (CN2011-ZH PDF) |
| 其它名稱： | LMK04010BISQEDKR |
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頁第45頁第46頁第47頁第48頁當(dāng)前第49頁第50頁第51頁第52頁第53頁第54頁第55頁第56頁第57頁第58頁第59頁第60頁第61頁第62頁第63頁第64頁第65頁
CLKoutX
CLKoutX*
1
2
0
:
1
2
0
:
0.1 PF
LVPECL
Receiver
100: Trace
(Differential)
LVPECL
Driver
8
2
:
1
2
0
:
Vcc
8
2
:
1
2
0
:
Vcc
0.1 PF
LVDS
Receiver
100: Trace
(Differential)
LVDS
Driver
1
0
:
CLKoutX
CLKoutX*
0.1 PF
LVDS
Receiver
5
0
:
100: Trace
(Differential)
LVDS
Driver
5
0
:
Vbias
SNOSAZ8J – SEPTEMBER 2008 – REVISED SEPTEMBER 2011
Termination for AC Coupled Differential Operation
AC coupling allows for shifting the DC bias level (common mode voltage) when driving different receiver
standards. Since AC coupling prevents the driver from providing a DC bias voltage at the receiver it is important
to ensure the receiver is biased to its ideal DC level.
When driving non-biased LVDS receivers with an LVDS driver, the signal may be AC coupled by adding DC
blocking capacitors, however the proper DC bias point needs to be established at the receiver. One way to do
this is with the termination circuitry in Figure 21.
Figure 21. Differential LVDS Operation, AC Coupling, External Biasing at the Receiver
Some LVDS receivers may have internal biasing on the inputs. In this case, the circuit shown in Figure 21 is
modified by replacing the 50
Ω terminations to Vbias with a single 100 Ω resistor across the input pins of the
receiver, as shown in Figure 22. When using AC coupling with LVDS outputs, there may be a startup delay
observed in the clock output due to capacitor charging. The previous figures employ a 0.1 F capacitor. This
value may need to be adjusted to meet the startup requirements for a particular application.
Figure 22. LVDS Termination for a Self-Biased Receiver
LVPECL drivers require a DC path to ground. When AC coupling an LVPECL signal use 120
Ω emitter resistors
close to the LVPECL driver to provide a DC path to ground as shown in Figure 23. For proper receiver operation,
the signal should be biased to the DC bias level (common mode voltage) specified by the receiver. The typical
DC bias voltage for LVPECL receivers is 2 V. A Thevenin equivalent circuit (82
Ω resistor connected to VCC and
a 120
Ω resistor connected to ground with the driver connected to the junction of the 82 Ω and 120 Ω resistors) is
a valid termination as shown in Figure 23 for VCC = 3.3 V. Note this Thevenin circuit is different from the DC
coupled example in Figure 20.
Figure 23. Differential LVPECL Operation, AC Coupling, Thevenin Equivalent, External Biasing at the
Receiver
Copyright 2008–2011, Texas Instruments Incorporated
53
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| AD5204BN10 | IC DGTL POT QUAD 256POS 24-DIP |
| MS27484P18F30S | CONN PLUG 30POS STRAIGHT W/SCKT |
| VE-220-MY-F2 | CONVERTER MOD DC/DC 5V 50W |
| AD5220BR10 | IC POT DGTL 10K 128POS 8-SOIC |
| 74VHC153MTCX | MULTIPLEXER DUAL 4IN 16TSSOP |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| LMK04010BISQX | 制造商:NSC 制造商全稱:National Semiconductor 功能描述:Low-Noise Clock Jitter Cleaner with Cascaded PLLs |
| LMK04010BISQX/NOPB | 功能描述:時(shí)鐘合成器/抖動(dòng)清除器 RoHS:否 制造商:Skyworks Solutions, Inc. 輸出端數(shù)量: 輸出電平: 最大輸出頻率: 輸入電平: 最大輸入頻率:6.1 GHz 電源電壓-最大:3.3 V 電源電壓-最小:2.7 V 封裝 / 箱體:TSSOP-28 封裝:Reel |
| LMK04011BISQ | 制造商:Texas Instruments 功能描述:Clock Conditioner 48-Pin LLP EP T/R |
| LMK04011BISQ/NOPB | 功能描述:時(shí)鐘合成器/抖動(dòng)清除器 RoHS:否 制造商:Skyworks Solutions, Inc. 輸出端數(shù)量: 輸出電平: 最大輸出頻率: 輸入電平: 最大輸入頻率:6.1 GHz 電源電壓-最大:3.3 V 電源電壓-最小:2.7 V 封裝 / 箱體:TSSOP-28 封裝:Reel |
| LMK04011BISQE | 制造商:Texas Instruments 功能描述:Clock Conditioner 48-Pin LLP EP T/R 制造商:Texas Instruments 功能描述:PRECISION CLOCK CONDITIONER, 48LLP |
發(fā)布緊急采購，3分鐘左右您將得到回復(fù)。