IQXT-351

VCTCXO Specification

ISSUE 1; August 2016

Outline (mm)

Description

Surface mount Voltage Controlled Temperature Compensated

Crystal Oscillator (VCTCXO) in a miniature 1.6 x 1.2mm

surface mount package.

Frequency Parameters

Frequency

19.2MHz to 52.0MHz

±1.50ppm

Frequency Tolerance

@ 25°C ±2°C

Tolerance Condition

Frequency Stability

±0.50ppm

±1ppm max per year @ 25°C

±3°C

Ageing

Supply Voltage Variation (±5% change @ 25°C): ±0.1ppm max

Load Variation (±10% change @ 25°C): ±0.1ppm max

IR Reflow Resistance (referred to frequency before reflow):

±1ppm max

Electrical Parameters

1.8V ±5%

Supply Voltage

Absolute Maximum Supply Voltage: -0.6V to 4.6V

Frequency Adjustment

Pulling

±8ppm to ±13ppm

Control Voltage

0.9V ±0.8V

Absolute Maximum Control Voltage: -0.6V to Vs+0.6V

Slope: Positive

Operating Temperature Ranges

-40 to 85°C

-30 to 85°C

Output Details

Output Compatability

Clipped Sine

Drive Capability

10kΩ//10pF

Output Voltage Level: 0.8V pk-pk min

Output: DC coupled

Start Up Time (Vout ≥ 90%Vpk-pk): 2ms max

Noise Parameters

Harmonic distortion: -5.0dBc max

Phase Noise @ 25°C: -135dBc/Hz @ 1kHz typ

Environmental Parameters

Storage Temperature Range: -40 to 85°C

Manufacturing Details

Reflow Process

Preheating: 170°C±10°C for1 to 2 minutes.

Maximum reflow: 250°C±10°C for10secs.

A DC-cut capacitor is not built in to the oscillator; a 1000pF

DC-cut capacitor is therefore required in the output line.

Printed on 30 Aug 16 14:58 using Model Data Sheet V1.2550

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