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SM5168 Folha de dados(PDF) 2 Page - Nippon Precision Circuits Inc

Nome de Peças SM5168
Descrição Electrónicos  PLL Synthesizer IC
Download  9 Pages
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Fabricante Electrônico  NPC [Nippon Precision Circuits Inc]
Página de início  http://www.npc.co.jp/en
Logo NPC - Nippon Precision Circuits Inc

SM5168 Folha de dados(HTML) 2 Page - Nippon Precision Circuits Inc

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SM5168 series
SEIKO NPC CORPORATION —2
PINOUT
(Top view)
SM5168A
× series
SM5168C
× series
PIN DESCRIPTION
1
2
8
3
4
6
5
DO
VSS
FIN
OPR
TEST
7
LD
XIN
VDD
1
2
8
3
4
6
5
DO
VSS
FIN
TR
TEST
7
LD
XIN
VDD
Number
Name
I/O
Description
1
VDD
2.7 to 3.6V supply
2DO
O
Phase comparator error signal three-state output pin.
Built-in charge pump means that this output can be connected to a low-pass filter. The output
polarity is preset for connection to a passive filter.
3
VSS
Ground pin
4
FIN
I
Phase comparator frequency divider (N-counter) signal input pin.
Feedback resistor built-in, so input can be AC-coupled.
5
OPR
(SM5168A
× series)
I
Power-save control pin.
Start when HIGH, standby mode when LOW.
TR
(SM5168C
× series)
Frequency divider switching control.
Switches between 2 sets of reference and comparator frequency dividers.
6
TEST
I
Test pin.
Leave open or connect to VSS for normal operation.
7
LD
O
Unlock signal output pin. (Unlocked when LOW)
8
XIN
I
Reference frequency divider (R-counter) external clock input pin.
Feedback resistor built-in, so input can be AC-coupled.


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