OCXO 38.88 MHz CMOS B 3.3 VOLT 36x27x13 mm B

1. POWER SUPPLY CHARACTERISTICS (pin 3)

Item

Parameter

Condition

Min.

Typ.

Max.

Unit

Note

1.1

Supply voltage input

3.135

3.3

3.465

V

1.2

Supply current at power on

at 25˚C

1000 /
3.5

mA /
W

1.3

Supply current at steady state

at 25˚C

450 /
1.6

mA /
W

In still air 5 min after power on

1.4

Supply current at steady state

at Min T

mA /
W

In still air 5 min after power on

1.5

Supply current at steady state

at Max T

mA /
W

In still air 5 min after power on

2. CONTROL VOLTAGE INPUT (pin 1)

2.1

Transfer slope

Positive

2.2

Input impedance

kohm

2.3

Min frequency

@ Vc min

ppm

Vc min = 0V

2.4

Nom frequency

@ Vc nom

ppb

Vc nom = 2.0 V

2.5

Max frequency

@ Vc max

ppm

Vc max = 4.0 V

2.6

Tuning sensitivity

ppb/mV

2.7

Tuning linearity

%

Deviation from a straight line fit

3. TEMPERATURE 

Min T

Max T

3.1

Temperature range

operating

-40

+85

Deg C

3.2

Temperature range

storage

-55

+105

Deg C

4A. OUTPUT SIGNAL FOR HCMOS, LVCMOS, CMOS (pin 4)

Item

Parameter

Condition

Min.

Typ.

Max.

Unit

Note

4.1

Load

15

pF

4.2

Output Level

VOH / VOL

> 2.8

< 0.3

V

4.3

Duty Cycle

45

55

%

4.4

Rise / Fall time

< 5.0

ns

4B. OUTPUT SIGNAL FOR SINEWAVE (pin 4)

4.5

Output Level

Sinewave

dBm

Load 50 ohm

4.6

Harmonics

dBc

4.7

Non harmonics

dBc

4.8 Short term stability Frequency domain, Phase Noise L(f)

4.8.1

Phase Noise @ offset frequency

1 Hz

-75

dBc / Hz

1 h after power on and still air

4.8.2

Phase Noise @ offset frequency

10 Hz

-110

dBc / Hz

1 h after power on and still air

4.8.3

Phase Noise @ offset frequency

100 Hz

-125

dBc / Hz

1 h after power on and still air

4.8.4

Phase Noise @ offset frequency

1KHz

-140

dBc / Hz

1 h after power on and still air

4.8.5

Phase Noise @ offset frequency

10KHz

-145

dBc / Hz

1 h after power on and still air

4.8.6

Phase Noise @ offset frequency

100KHz

 -150

dBc / Hz

1 h after power on and still air

4.9 Short term stability Time domain, Allan Deviation sy(t)

4.9.1

Sample time (t)

0,1s

1 h after power on and still air

4.9.2

Sample time (t)

1.0s

< 

< 1^.E^-11

1 h after power on and still air

4.9.3

Sample time (t)

10s

1 h after power on and still air

4.9.4

Sample time (t)

100s

1 h after power on and still air

5. FREQUENCY CHARACTERISTICS

5.1

Stability vs temperature

Min T/ Max T

-12

+12

ppb p-p

External Vc connected

5.2

Calibration accuracy

at 25˚C and Vc nom

-100

+100

ppb

At delivery, 30 min after power ON

5.3

Frequency retrace *

15 min after Power On

 -20

+20 

ppb

Value 30 min after power ON compared to frequency prior to power OFF

5.4

Warm up time

at Vc Nom and 25˚C

3

min

< ±100 ppb from final freq. after PO for 1hour

5.5

Long term stability (aging)

Per day

-0.5

+0.5

ppb

After 30 days of continues operation At 25˚C

5.6

Long term stability (aging)

First year

-50

+50

ppb

After 30 days of continues operation At 25˚C

5.7

Long term stability (aging)

After first year

 -30

+30

ppb

After 30 days of continues operation At 25˚C

5.8

Start up time

At 25˚C and Vc nom

s

From power on to 67 % of V out

5.9

Load change

Cl ± 5%

-1.0

+1.0

ppb

5.10

Vcc change

Vcc ± 5%

-3.0

+3.0

ppb

* Retrace test precondition Power ON 24 h Power OFF 24 h and Vc nom and 25˚C.

6A. REFERENCE VOLTAGE 

6.1

Reference Voltage

V

6B. OVEN ALARM 

6.2

High level

V

Oven is ready (steady state)

6.3

Low level

V

Oven is warming up