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RFPT400

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Low cost SMD Temperature Compensated Crystal Oscillator for indoor wireless

infrasture applications e.g femtocells

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The RFPT400 is a high stability SMD TCVCXO designed and specified specifically to

meet the short-term stability requirements for indoor wireless infra-structure products,

e.g femtocells.

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Product description

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The RFPT400 is a high stability SMD TCVCXO designed and specified specifically to meet the

short-term stability requirements for indoor wireless infra-structure products at a fraction of

the cost of oven-stabilised oscillators. Using Rakon's advanced fourth-order analogue

frequency compensation system 'Pluto™', the TCVCXO achieves unrivalled control of

frequency variation with respect to temperature over the critical indoor temperature range.

The stability of the RFPT400 allows a local area Base Station (BS) to achieve the frequency

accuracy requirements of ETSI TS 125 104 without the need for minute-by-minute monitoring

and adjustment. The BS's reliance on external sources of frequency compensation is reduced

to an approximately once-per-week rate with a corresponding significant reduction in network

load and infrastructure cost.

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Applications

Femtocell

Base stations

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Features

0°C~70°C, stability≤±100pb

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Specifications

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1.0

SPECIFICATION REFERENCES

Line

Parameter

Description

1.1

Model description

RFPT400

1.2

RoHS compliant

Yes. Part numbers with suffix'LF'

1.3

Package size available

5.0mm x 3.2mm

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2.0

FREQUENCY CHARACTERISTICS

Line

Parameter

Test Condition

Value

Unit

2.1

Frequency range

Frequency range available

10 to 30

MHz

2.2

Frequency calibration

Frequency offset at 25°C, sixty minutes after reflow

±2 max

ppm

2.3

Frequency stability

over temperature

Over 0°C ~ 70°C (dF/dT ≤ 1°C/min) at fixed supply voltage and

load

±0.08 to

0.25

ppm

2.4

Temperature range

Operating temperature range over which temperature stability is

measured

0 to 70

°C

2.5

Supply voltage

stability

±2% variation in supply voltage at 25°C

±10 max

ppb

2.6

Load sensitivity

±2% variation in magnitude from 10kΩ//10pF

±5 max

ppb

2.7

Long term stability

Ageing rate following reflow after day 1. (Typical)

±10 max

ppb/day

2.8

Long term stability

Ageing rate following reflow after day 7. (Typical)

±3 max

ppb/day

2.9

Long term stability

Ageing rate following reflow after day 30. (Typical)

±1 max

ppb/day

2.10

Long term stability

Long term stability after 1 year

±1000 max

ppb

2.11

Long term stability

Long term stability after 5 years

±1500 max

ppb

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3.0

POWER SUPPLY

Line

Parameter

Test Condition

Value

Unit

3.1

Supply voltage

Typical:

3.3

V

3.2

Current

load 10kΩ//10pF

3 max

mA

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