E2791

TCXO Specification

ISSUE 7; April 2016

Outline (mm)

Description

Zarlink approved TCXO for GR-1244 & GR-253 Stratum 3

applications.

Frequency Parameters

Frequency

20.0MHz

Frequency Stability

±0.28ppm

±4.6ppm max after 20 years

Ageing

Electrical Parameters

3.3V ±5%

Supply Voltage

Operating Temperature Ranges

-20 to 70°C

Output Details

Output Compatability

HCMOS

Drive Capability

15pF max

Output Control

Tri-State Operation:

Logic ‘1’ (≥60%VS) to pad 8 enables output

Logic ‘0’ (≤20%VS) to pad 8 disables output

When at logic ‘0’ the output stage is disabled for all output

options, but the oscillator and compensation circuit are still

active (Current consumption <1mA)

Output Levels

VOL: ≤10% Vs

VOH: ≥90% Vs

Noise Parameters

Phase Noise (max):

–85dBc/Hz @ 10Hz

–110dBc/Hz @ 100Hz

–125dBc/Hz @ 1kHz

–135dBc/Hz @ 10kHz

Environmental Parameters

Storage Temperature: -55 to 125°C

Shock: IEC 60068-2-27, Test Ea: 980m/s2 acceleration for

6ms, 3 shocks in each of 3 mutually perpendicular planes

Vibration: IEC 60068-2-6, Test Fc, Procedure B4: 10Hz-60Hz

1.5mm displacement, 60-2000Hz at 98.1m/s2, 30mins in 3

mutually perpendicular planes at 1 oct/min

Solderability: MIL-STD-202, Method 208, Category 3

Ordering Information

Frequency*

Model*

Example:

20.0MHz E2791

Compliance

Compliant

RoHS Status (2011/65/EU)

Compliant

REACh Status

MSL Rating (JDEC-STD-033):

1

Printed on 26 Apr 16 12:10 using Model Data Sheet V1.2550

Page 1 of 2

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