O-CS41 Series

41 x 30 x 16 mm

Datasheet #2213A

Precision Ultra Low Phase Noise OCXO in 41x30mm SMD Package with

OSC Disable and Oven Alarm features for Instrumentation

Revision [B]: 12/19/2023

www.nelfc.com

Electrical (cont.)

Parameters

Symbol

Condition

Min

Typ

Max

Unit

Notes

SSB Phase Noise (Achieved after 10

minutes warm-up) 2*

£(φ)

1Hz

10 Hz

100 Hz

1 KHz

10 KHz

100 KHz

-110

-105

-140

-155

-160

-168

-170

dBc/Hz

Grade L

1Hz

10 Hz

100 Hz

1 KHz

10 KHz

100 KHz

-112

-145

-156

-162

-170

-172

dBc/Hz

Grade P

1Hz

10 Hz

100 Hz

1 KHz

10 KHz

100 KHz

-115

-146

-156

-163

-170

-172

dBc/Hz

Grade U

0.1Hz

1Hz

10 Hz

100 Hz

1 KHz

10 KHz

100 KHz

-88

-119

-148

-160

-168

-168

-168

dBc/Hz

Grade E 6*

Retrace

After 30 minutes

±10

ppb

24 Hours off 3*

G-sensitivity

worst direction

±1.0

ppb/G

Input Voltage

Vcc

10.5

12.0

12.6

V

Power consumption

P

steady state, 25°C

steady state, -10°C

start-up @ -10°C

1.2

1.8

2.5

1.5

3.2

W

Still air

Spectral Purity

Spurious

Harmonics/Sine

Harmonics

-35

-80

-30

-45

dBc

Non-harmonic

E grade

Load

Internally AC-coupled 50 Ohm

Warm-up time

τω

to 0.1ppm accuracy

to 10ppb accuracy

3

5

10

minutes

Off time <24 hrs

Aging rate was reached

Start-up time

τ

s

From cold start at

room temperature

5

seconds

RF output to appear

From OSC EN

activation

0.1

Output Waveform

Sinewave

Output Power

+10

+13

+17

dBm

L, P, and U grades

+7

+12

E grade

Control voltage

Vc

0

5.0

V

Reference Voltage

Vref

No load

4.8

4.0

5.0

4.096

5.2

4.2

V

100 Ohm series to Vref

E grade, straight to Vref

Output Impedance

At Vref pin

100

Ohm

L, P, and U grades