參數(shù)資料
型號: SI5017-D-GM
廠商: Silicon Laboratories Inc
文件頁數(shù): 14/26頁
文件大?。?/td> 0K
描述: IC CLOCK/DATA RECOVERY 28MLP
標準包裝: 60
系列: DSPLL®
類型: 時鐘和數(shù)據(jù)恢復(fù)(CDR)
PLL:
主要目的: SONET/SDH,ATM 應(yīng)用
輸入: 時鐘
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: 3.135 V ~ 3.465 V
工作溫度: -40°C ~ 85°C
安裝類型: 表面貼裝
封裝/外殼: 28-VFQFN 裸露焊盤
供應(yīng)商設(shè)備封裝: 28-MLP-EP(5x5)
包裝: 管件
其它名稱: 336-1279
Si5017
Rev. 1.5
21
22
23
CLKOUT–
CLKOUT+
OCML
Differential Clock Output.
The output clock is recovered from the data signal
present on DIN except when LTR is asserted or the
LOL state has been entered.
24
CLKDSBL
I
LVTTL
Clock Disable.
When this input is high, the CLKOUT output drivers
are disabled. For normal operation, this pin should
be low.
Note: This input has a weak internal pulldown.
26
BER_LVL
I
Bit Error Rate Level Control.
The BER threshold level is set by applying a volt-
age to this pin. When the BER exceeds the pro-
grammed threshold, BER_ALM is driven low. If this
pin is tied to GND, BER_ALM is disabled.
27
BER_ALM
OLVTTL
Bit Error Rate Alarm.
This pin will be driven low to indicate that the BER
threshold set by BER_LVL has been exceeded.
There is no hysteresis.
28
NC
No Connect.
Leave this pin disconnected.
GND Pad
GND
Supply Ground.
Nominally 0.0 V. The GND pad found on the bottom
of the 28-lead QFN (see Figure 16 on page 23)
must be connected
directly to supply ground.
Minimize the ground path inductance for optimal
performance.
Table 8. Si5017 Pin Descriptions (Continued)
Pin #
Pin Name
I/O
Signal Level
Description
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