參數(shù)資料
型號(hào): SI5020-B-GM
廠商: Silicon Laboratories Inc
文件頁(yè)數(shù): 9/22頁(yè)
文件大?。?/td> 0K
描述: IC CLK DATA REC SONET/SDH 20-QFN
標(biāo)準(zhǔn)包裝: 75
系列: SiPHY™, DSPLL®
類型: 時(shí)鐘和數(shù)據(jù)恢復(fù)(CDR)
PLL:
主要目的: 以太網(wǎng),SONET/SDH,ATM 應(yīng)用
輸入: 時(shí)鐘
輸出: CML
電路數(shù): 1
比率 - 輸入:輸出: 1:2
差分 - 輸入:輸出: 是/是
頻率 - 最大: 2.7GHz
電源電壓: 2.375 V ~ 2.625 V
工作溫度: -40°C ~ 85°C
安裝類型: 表面貼裝
封裝/外殼: 20-VFQFN 裸露焊盤
供應(yīng)商設(shè)備封裝: 20-QFN(4x4)
包裝: 管件
Si5020
Rev. 1.5
17
15
PWRDN/CAL
I
LVTTL
Powerdown.
To shut down the high-speed outputs and reduce
power consumption, hold this pin high. For normal
operation, hold this pin low.
Calibration.
To initiate an internal self-calibration, force a high-
to-low transition on this pin. (See "PLL Self-Calibra-
tion" on page 11.)
Note: This input has a weak internal pulldown.
16
17
CLKOUT–
CLKOUT+
OCML
Differential Clock Output.
The output clock is recovered from the data signal
present on DIN. In the absence of data, the output
clock is derived from REFCLK.
19
20
RATESEL0
RATESEL1
ILVTTL
Data Rate Select.
These pins configure the onboard PLL for clock and
data recovery at one of four user selectable data
rates. See Table 7 for configuration settings.
Note: These inputs have weak internal pulldowns.
2, 7, 11, 14
VDD
2.5 V
Supply Voltage.
Nominally 2.5 V.
3, 8, 18, and
GND Pad
GND
Supply Ground.
Nominally 0.0 V. The GND pad found on the bottom
of the 20-pin micro leaded package (see Figure 11)
must be connected directly to supply ground.
Table 9. Si5020 Pin Descriptions (Continued)
Pin #
Pin Name
I/O
Signal Level
Description
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SI5020-B-GMR 功能描述:計(jì)時(shí)器和支持產(chǎn)品 Multi-Rate SONET SDH CDR RoHS:否 制造商:Micrel 類型:Standard 封裝 / 箱體:SOT-23 內(nèi)部定時(shí)器數(shù)量:1 電源電壓-最大:18 V 電源電壓-最小:2.7 V 最大功率耗散: 最大工作溫度:+ 85 C 最小工作溫度:- 40 C 封裝:Reel
SI5020-BM 功能描述:計(jì)時(shí)器和支持產(chǎn)品 SNT/SDH GbE 2.7Gbps OC48/12/3 STM16/4/1 RoHS:否 制造商:Micrel 類型:Standard 封裝 / 箱體:SOT-23 內(nèi)部定時(shí)器數(shù)量:1 電源電壓-最大:18 V 電源電壓-最小:2.7 V 最大功率耗散: 最大工作溫度:+ 85 C 最小工作溫度:- 40 C 封裝:Reel
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SI5020C-BAR 制造商:Silicon Laboratories Inc 功能描述: