CFPO-DO-251S12A51N datasheet, PDF

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CFPO-DO-251S12A51N: DescriptionRange of Super Single Oven OCXO’s; File Size58KB，2 Pages; ManufacturerETC

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CFPO-DO-251S12A51N Overview

Range of Super Single Oven OCXO’s

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CFPO-DO Series

ISSUE 1; 19 OCTOBER 2004

Description

■

The CFPO-DO series are a range of Super Single Oven

OCXO’s designed as a compact and smart frequency

source/time keeping reference for all synchronization

systems including global ositioning system (GPS)

based equipment

CFPO-DO series key performances are:-

■

Holdover better than 7µs over 24 hours

■

Frequency stability over operating temperature range

( see table text )

■

Frequency stability versus change of all operating

conditions (pressure, supply, load, etc.)

Package Options (metal leaded package, hermetically

sealed)

■

CFPO-DO-1 50.8 x 50.8 x 25.0mm (50)

■

CFPO-DO-2 51.0 x 41.0 x 25.0mm (51)

■

CFPO-DO-3 51.0 x 41.0 x 19.05mm (51B)

■

CFPO-DO-4 40.0 x 30.0 x 20.0mm (40)

Supply Options

■

Standard: 12V ±5% (12)

Standard Frequencies

■

10.0, 12.8, 13.0MHz

Frequency Ranges

■

8.192 to 15.0MHz

■

Initial tolerance @ 25°C Fo ±1x10

-7

Power Consumption

■

Warm-up: <750mA

■

@25°C: <250mA (calm air)

Warm Up Time @ 25°C (typical)

±1 x 10

-8

after 10 mins

5.0

∅1.0±0.05

Environmental Specification (non-operating)

Storage temperature range -55 to 85°C

■

Shocks - half-sine 50g 11ms / 3 per direction

IEC 68-2-27 Test Ea / Severity 50A

■

Vibration - 10g / 10-500Hz IEC 68-2-06 Test

Fc / Severity 500/10

■

Marking (printed label on top of can)

■

C-MAC or Customer’s Logo

■

C-MAC or Customer’s Part Number

■

Nominal Frequency (Fo) in MHz

■

Serial Number (1 letter & 5 numbers )

■

Date Code (4 digits for year and week)

Phase Noise @10.0MHz typical (sinewave)

■

10Hz -125dBc/Hz

■

100Hz -145dBc/Hz

■

1kHz -155dBc/Hz

■

10kHz -158dBc/Hz

Outline in mm - Package 50 (without Oven Alarm)

20.3 20.3

1 2

40.6SQ

Function

Input frequency control

Output ref. voltage

Output signal

Mechanical GND

and (–) supply

Input supply (+)

Bottom View

50.8SQ max

25.0 max

■

All tolerances ±0.2mm

Retrace after 24 Hours off @25°C (typical)

■

±3 x 10

-9

after 60 minutes

Frequency Adjustment

■

> ±3 x 10

-7

from 0V to reference voltage, monotonic

& standard positive slope (negative slope optional).

Sufficient to cover 10 years ageing

Oven Alarm “logic level” signal (optional) (A)

■

Logic “0” during warm-up time and if oven is not

operating

■

Logic “1” when temperature regulation is operating

Reference Voltage

■

Standard Reference voltage output +8V

■

Optional +5.0V or +6.2V (except Package 40)

Output Compatibility

■

Sinewave +7dBm ±2dBm into 50Ω load (S)

■

Squarewave optional (C)

Harmonic Distortion

■

Harmonics & sub-harmonics < -30dBc

■

Non-Harmonics < -75dBc

Outline in mm - Package 40 (with Oven Alarm)

Bottom

View

17.8

25.4

22.9

40.0 max

30.0max

19.5 max

Pin Function

1. Input frequency control

2. Output reference

voltage

3. Input supply (+)

4. Output signal

5. Mechanical GND

and (-) supply

OCXOs

0.95

All tolerances ±0.2mm

Europe Tel: +44 (0)1460 270200

Americas Tel: +1 919 941 9333

Asia

Tel: +86 755 8826 5991

Fax: +44 (0)1460 72578

Fax: +1 919 941 9371

Fax: +86 755 8826 5990

4.0±0.5

∅0.8±0.05

Website: www.cmac.com

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