參數資料
型號: SI5310-EVB
廠商: Silicon Laboratories Inc
文件頁數: 11/26頁
文件大?。?/td> 0K
描述: BOARD EVALUATION FOR SI5310
標準包裝: 1
主要目的: 計時,時鐘發(fā)生器
已用 IC / 零件: SI5310
已供物品:
其它名稱: 336-1140
Si5310
Rev. 1.3
19
5. Pin Descriptions: Si5310
Figure 11. Si5310 Pin Configuration
Table 11. Si5310 Pin Descriptions
Pin #
Pin Name
I/O
Signal Level
Description
1
REXT
External Bias Resistor.
This resistor is used by onboard circuitry to establish
bias currents within the device. This pin must be
connected to GND through a 10 k
Ω (1%) resistor.
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 12)
must be connected directly to supply ground.
4, 5
REFCLK+, REF-
CLK–
ISee Table 2
Differential Reference Clock.
The reference clock sets the initial operating fre-
quency used by the onboard PLL for clock regenera-
tion and multiplication. Additionally, the reference
clock is used as a reference in generation of the LOL
output and to bound the frequency drift of MULTOUT
when CLKIN is not present.
6LOL
O
LVTTL
Loss of Lock.
This output is driven high when a divided version of
the clock multiplier output deviates from the refer-
ence clock frequency by the amount specified in
9, 10
CLKIN+, CLKIN–
I
Differential Clock Input.
Differential input clock from which MULTOUT is
derived.
1
2
3
4
5
6
7
8
9
13
14
15
16
REXT
VDD
GND
REFCLK+
REFCLK–
PWRDN
VDD
CLKOUT+
CLKOUT–
VDD
12
11
10
GND
17
18
19
20
NC
MUL
T
SE
L
GN
D
MUL
T
OUT
+
MUL
T
OUT
LOL
VD
D
GND
CLK
IN+
CL
KI
N
Pad
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