SM5009 series

NIPPON PRECISION CIRCUITS INC.—4

FUNCTIONAL DESCRIPTION

Standby Function

5009 AL

× series

When INH goes LOW, the oscillator stops and the oscillator output on Q becomes high impedance.

5009AH

×, AK×, AN×, CN× series

When INH goes LOW, the output on Q becomes high impedance, but internally the oscillator does not stop.

Power-save Pull-up Resistance (AL

× series only)

The INH pull-up resistance changes in response to the input level (HIGH or LOW). When INH goes LOW

(standby state), the pull-up resistance becomes large to reduce the current consumption during standby.

Current consumption and Output waveform with NPC’s standard crystal

Version

INH

Q

Oscillator

AL

× series

HIGH (or open)

Normal operation

LOW

High impedance

Stopped

AH

×, AK×, AN×, CN×

series

HIGH (or open)

Normal operation

LOW

High impedance

Normal operation

f [MHz]

R [

Ω]

L [mH]

Ca [fF]

Cb [pF]

30

17.2

4.36

6.46

2.26

40

16.8

2.90

5.47

2.08

L

Ca

R

Cb