SM5168 Просмотр технического описания (PDF) - Nippon Precision Circuits

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SM5168

PLL Synthesizer IC

Nippon Precision Circuits  

PINOUT

(Top view)

SM5168A× series

SM5168 series

SM5168C× series

VDD 1

DO 2

VSS 3

FIN 4

8 XIN

7 LD

6 TEST

5 OPR

VDD 1

DO 2

VSS 3

FIN 4

8 XIN

7 LD

6 TEST

5 TR

PIN DESCRIPTION

Number

1

2

3

4

5

6

7

8

Name

VDD

DO

VSS

FIN

OPR

(SM5168A× series)

TR

(SM5168C× series)

TEST

LD

XIN

I/O

Description

– 2.7 to 3.6V supply

Phase comparator error signal three-state output pin.

O 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.

– Ground pin

I

Phase comparator frequency divider (N-counter) signal input pin.

Feedback resistor built-in, so input can be AC-coupled.

Power-save control pin.

Start when HIGH, standby mode when LOW.

I

Frequency divider switching control.

Switches between 2 sets of reference and comparator frequency dividers.

I

Test pin.

Leave open or connect to VSS for normal operation.

O Unlock signal output pin. (Unlocked when LOW)

I

Reference frequency divider (R-counter) external clock input pin.

Feedback resistor built-in, so input can be AC-coupled.

SEIKO NPC CORPORATION —2

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