SM5158 datasheet(5/7 Pages) NPC

Il numero della parte	SM5158

Spiegazioni elettronici	Serial input PLL frequency synthesizer

PDF	7 Pages

Scroll/Zoom	100%

Produttore elettronici	NPC [Nippon Precision Circuits Inc]

Homepage	http://www.npc.co.jp/en

Logo

5 / 7 page

DIVIDER DATA SETTING PROCEDURE

NIPPON PRECISION CIRCUITS-5

SM5158A

CLK

DATA

910

MSB

LSB

Control

Input data must be MSB first. Final bit(17th

bit) is assigned to the control bit.

Data are written into shift register at the ris-

ing edge of the CLK signal.

When LE is HIGH,data is transferred from

the shift register to either the latch of refer-

ence divider or input divider. Thus data must

be written on the shift register while LE is

remaining LOW.

While all bits of the N latch to are "0", the N

counter will be disabled, DOA, DOP are

floating,and the supply current will be

decreased.

While all bits of the R latch are "O", oscilla-

tor will be disabled.

While all bits of R and N latches are "0", sup-

ply current decreases to 10uA or less.

16 BIT DATA FOR R or N latch

Latch select bit ( 1 : R-latch, 0 : N-latch )

SM5158 Scheda tecnica(PDF) 5 Page - Nippon Precision Circuits Inc