CMC15915BU1-32.768 datasheet(1/5 Pages) RALTRON

Part #	CMC15915BU1-32.768

Description	Ultra Low Power 32.768KHz MEMS TCXO

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Manufacturer	RALTRON [Raltron Electronics Corporation]

Direct Link	http://www.raltron.com

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Ultra Low Power 32.768KHz

MEMS TCXO

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CMC159-SERIES

R A L T R O N E L E C T R O N I C S

 1 0 4 0 0 N .W . 3 3 rd S t  M i a m i , F l o r i d a 3 3 1 7 2  U . S . A .

phone: +1-305-593-6033  fax: +1-305-594-3973  e-mail: sales@raltron.com  internet: http://www.raltron.com

■ Ultra Low power: < 1A

■ Fixed 32.768 kHz

■ No Supply Voltage external bypass capacitors required

■ Frequency Stability over Temperature as low as ±5ppm

■ Small SMD package 1.5 x 0.8 mm

PARAMETER

SYMBOL

CONDITION

VALUE

UNIT

Min.

Typ.

Max.

Frequency nominal

f0

32.768

kHz

Supply Voltage

Vs

Ta = -40°C to +85°C

1.5

3.63

V

Core Supply Current

Is

Vs = 1.8V, no load condition,

LVCMOS, Ta = 25°C

Vs = 3.63V max, Ta = -10°C to +70°C

no load condition

Vs = 1.5V to 3.63V, Ta = -40°C to

+85°C, no load condition

Is does not include output stage

current or load.

0.99

1.52

A

A

Operating Temperature

Ta

Commercial

Industrial

0

-40

+70

+85

C

°C

Frequency Stability vs. Temperature

( without initial offset )

Δf/T

a

Initial offset is defined as the frequency

deviation from the nominal value at

room temperature after reflow

-5

-10

-20

+5

+10

+20

ppm

Frequency Stability vs. Temperature

( with initial offset )

Δf/T

a

Initial offset is defined as the frequency

deviation from the nominal value at

room temperature after reflow

-10

-13

-22

+10

+13

+22

ppm

Frequency stability vs. Supply Voltage

Δf/Vs

Vs= 1.8V±10%

Vs= 1.5V ~ 3.63V

-0.75

-1.5

+0.75

+1.5

ppm

Power supply Ramp

Ta = -40°C to +85°C, 0 to 90% Vs

100

ms

Start-up Time

T START

Ta = -

40°C ≤ Ta ≤ +60°C, valid output

Ta = +6

0°C ≤ Ta ≤ +70°C, valid output

Ta

= +70°C ≤ Ta ≤ +85°C, valid output

180

300

350

380

ms

Long Term Frequency Stability

Δf/T

Ta=25°C, Vs=3.3V

-1.0

+1.0

ppm

Period Jitter RMS

Cycles = 10,000,Ta=25°C,

Vs= 1.5V ~ 3.63V

35

ns

Long Term Jitter

81920 cycles ( 2.5 sec ), 100 samples

2.5

s p-p

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