IC OCXO

| MERCURY ™ MINIATURE SERIES

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RFPO50

The RFPO50 is from the world’s first ASIC-based OCXO product family and utilizes Rakon’s patented Mercury™ ASIC technology. It delivers

temperature stability as low as ±10ppb (over -20 to 70°C) and is capable of short term aging of typically less than ±2ppb per day.

With a highly integrated oven included, the RFPO50 ensures short warm-up times and consumes very low power – only 350mW at room

temperature. The ASIC architecture delivers a 1000x reliability improvement when compared to traditional discrete OCXOs..

Standard Specifications

Parameter

Min.

Typ.

Max.

Unit

Test Condition / Description

Nominal frequency

5 – 50

MHz

Standard frequencies: 10, 12.8, 19.2, 19.44, 20,

24.576, 25, 26, 30.72 and 40MHz

Frequency calibration

±0.5

ppm

Initial accuracy at 25°C ±2°C

Reflow shift

±1

ppm

Pre to post reflow ∆F (measured ≥ 60 minutes

after reflow)

Frequency stability over temperature in

still air

±10 –

±100

ppb

Reference to (FMAX + FMIN)/2

Frequency slope ΔF/ΔT in still air

±0.5 – ±2

ppb/°C

Temperature ramp ≤ 1°C/minute

Operating temperature range

-40

85

°C

Supply voltage stability

±10

ppb

±5% variation, frequency ≤ 26MHz

Load sensitivity

±10

ppb

±5pF / ±10% variation, frequency ≤ 26MHz

Warm-up time

< 3

minutes

The time needed for the frequency to be within

±20ppb of the frequency after 1 hour, at 25°C.

This parameter is frequency, assembly and

operating history dependent

Acceleration sensitivity

< 2

ppb/g

Gamma vector of all 3 axes, 30 to 1500Hz

Long term stability (ageing)

< ±2

±1

±3

ppb

ppm

ppm

Per day (after 30 days of continuous operation)

First year

10 years

Root Allan Variance (20MHz)

7.10-11

tau = 1.0s

Supply voltage (Vcc)

2.7 – 5.5

V

±5%

Input power (warm up)

1000

800

mW

mW

-40 to 85°C devices

-20 to 70°C devices

Input power (steady state in still air at

25°C)

400

350

mW

mW

-40 to 85°C devices

-20 to 70°C devices

Control voltage (Vc)

0.5 – 2.5

V

The GND of Vc needs to be connected directly to

pin 2 as ground lead impedance may cause

performance degradation

Frequency tuning

±5

ppm

Reference to frequency at Vc=1.5V

Slope

+8

ppm/V

Linearity 1

1

%

Port input impedance

80

kΩ

Modulation bandwidth

3.5

kHz

Oscillator output – C/Sinewave

0.8

1.1

Vpk-pk

At minimum supply voltage, 10kΩ//10pF load

1 The difference between the measured tuning characteristic and an ideal straight line fitted through it, expressed as a percentage of the

total tuning range.

Features

Applications

14.6 x 9.7 x 6.7

mm

 Small form factor

 Frequency stability over temperature as low as

±10ppb over -20 to 70°C

 Low power consumption

 Base Stations

 Broadcasting

 Instrumentation

 Time & Frequency Reference