TCXO温补晶振10MHz CFPT-9003 EX 1 B

TCXO

ISSUE 7; 24 MARCH 2004

Recommended for New Designs

Delivery Opti***

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10MHz CFPT-9003 EX 1 B

Frequency Stability

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Temperature: see table

Typical Supply Voltage Variation &plu***n;10% < &plu***n;0.2 ppm*

Typical Load Coefficient 15pF &plu***n;5pF < &plu***n;0.2 ppm*

*Dependant on frequency and output type

Please contact our sales office for current leadtimes

Description

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A series of surface mountable 7.0 × 5.0mm TCXOs for

medium to high volume applicati*** where ***all size

and high performance are pre-requisites. This oscillator

uses C-MAC’s latest custom ASIC "Pluto", a single chip

oscillator and analogue compensation circuit, capable

of sub 1 ppm performance over an extended tempera-

ture range. Its ability to function down to a supply volt-

age of 2.4V and low power c***umption make it partic-

ularly suitable for mobile applicati***

Frequency Adjustment

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Three opti*** with external Control Voltage applied to

pad 10:

A - Ageing adjustment: > &plu***n;5ppm, frequency < 20MHz

                      (Standard Option)

> &plu***n;7ppm, frequency > 20MHz

B - No frequency adjustment initial calibration @ 25°C

    < &plu***n;0.5 ppm

C - High Pulling &plu***n;10ppm to &plu***n;50ppm can be ***ailable

    depending on frequency and stability opti***.

    Please c***ult our sales office

Standard Frequencies

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10MHz

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Linearity

Slope

Input resistance

Modulation bandwidth

Standard control voltage ranges:

Without reference voltage

Without reference voltage

With reference voltage

< 1%

Positive

> 100k?

> 2kHz

Output W***eform

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Square HCMOS 15pF load

Square ACMOS 50pF max. load

(***ailable on request, contact sales office)

Sinew***e 10k? // 10pF AC-coupled,

Clipped sinew***e 10k? // 10pF AC-coupled,

SURFACE MOUNT

    TCXOs

- Vs=5.0V 2.5V&plu***n;1V

- Vs=3.3V 1.65V&plu***n;1V

- Vc=0V to Vref

Supply Voltage

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Operating range 2.4 to 6.0V, see table

Reference Voltage, Vref

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Current C***umption

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HCMOS Typically ≈

1+Frequency(MHz)*Supply(V)*{Load(pF)+15}*10-3 mA

E. g. 20MHz, 5V, 15pF ≈ 4mA

Sinew***e Typically < 8mA

Clipped Sinew***e Typically ≈

1+Frequency(MHz)*1.2*{Load(pF)+30}*10-3 mA

Optional reference voltage output on pad 1, suitable for

potentiometer supply or DAC reference.

1. No output (Standard option)

2. 2.2V, for Min. Vs>2.4V

3. 2.7V, for Min. Vs>3.0V

4. 4.2V, for Min. Vs>4.5V

Maximum load current (mA) = Vref /10

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Package Outline

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7.0 x 5.0 x 2.0mm ***D (Surface mount device)

ceramic carrier

For manual frequency adjustment connect an external

50K? potentiometer between pad 1 (Reference Voltage)

and pad 4 (Ground) with wiper connected to pad 10

(Voltage Control). Please specify reference voltage as part

of the ordering code

Tri-state

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Ageing

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&plu***n;1ppm maximum in first year, frequency < 20MHz

&plu***n;2ppm maximum in first year, frequency > 20MHz

Pad 8 open circuit or >0.6Vs output enabled

< 0.2Vs Tri-state

When Tri-stated, the output stage is disabled for all out-

put opti***, but the oscillator and compensation circuit

are still active

(Current c***umption <1mA)

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&plu***n;3ppm maximum for 10 years, frequency < 20MHz

&plu***n;5ppm maximum for 10 years, frequency > 20MHz

&plu***n;1ppm maximum after reflow