O-CS8 Series

14 x 21 x 7.5mm

Datasheet #1319A

Ultra Low Phase Noise, Precision SC-cut HF OCXO in SMD Package

Revision P: 08/24/2023

www.nelfc.com

Electrical (cont.)

Parameters

Symbol

Condition

Min

Typ

Max

Unit

Notes

Spectral Purity, Sine Wave

Output power

Subharmonics

Spurious

Harmonics

12

15

none

-35

-80

-30

dBm

dBc

Non-supply related

Output Waveform

Sine

CMOS

Code S

Code T

Load

10KOhm//15pF (HCMOS/TTL),

AC-coupled 50 Ohm (Sine Wave)

Output Code T

Output Code S

Warm-up Time

τ

to 0.1ppm

accuracy

3

5

minutes

Logic 1 (CMOS)

Voh

0.7 Vref

Output Code T

Logic 0 (CMOS)

Vol

0.1 Vref

V

Output Code T

Control Voltage

Vc

0

0

0

10.0

4.5

3.0

V

Slope options “L”, “M”

Slope options “P”, “Q”

Slope option “K”

Input Impedance

Zin

At Vc Pin

10

Kohm

Pull Range

from nominal F

±2.5

ppm

Absolute Pull Range

APR

±0.5

ppm

Deviation Slope

Monotonic, posit

0.7

1.3

ppm/V

Slope options “L”, “M”

Slope options “P”, “Q”

Linearity

±10%

%

Reference Voltage

Vref

N/A

4.5

3.0

V

Slope options “L”, “M”

Slope options “P”, “Q”

Vcc option A

Setability

Vc0

@25°C, Fnom.

4.0

1.75

1.2

5.0

2.25

1.5

6.0

2.75

1.8

V

Slope options “L”, “M”

Slope options “P”, “Q”

Slope option “K”

Modulation Bandwidth

Fm

DC

1

kHz

Environmental and Mechanical

Parameter

Description

Operating Temperature Range

0 to 70°C Standard, Other options – see Chart below

Mechanical Shock

Per MIL-STD-202, 30G, 11ms

Thermal Shock

Per MIL-STD-883, Method 1011, Condition A

Vibration

Per MIL-STD-202, 5G to 2000 Hz

Operational Vibration

Phase noise under vibration to be verified by the customer

Seal

Only crystal resonator is hermetically sealed

Soldering Conditions

See MAX reflow profile below; The device may be reflowed once. Reflowing upside

down is not allowed. Hand soldering is highly encouraged. NO CLEAN assembly is

recommended.

Moisture Sensitivity Level (MSL)

Class 1