51.84MHZCFPT-9060EX1ALF【PDF 1/4 页】TCVCXO, CLOCK, 51.84 MHz, ACMOS OUTPUT

收藏本站

您好，
买卖IC网欢迎您。
请登录
免费注册

买卖IC网

Sheet目录114588

[1页]2页 3页 4页

SURF

ACE

MOUNT

TCXOs

CFPT-9050 Series

ISSUE 6 ; 23 DECEMBER 2004

Recommended for New Designs

Delivery Options

■

Please contact our sales office for current leadtimes

Description

■

A highly versatile series of surface mountable

14.7 x 9.2 x 6.2mm temperature compensated voltage

controlled crystal oscillators (TCVCXOs) for applications

where small 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 0.3 ppm

performance. Its wide frequency range, operating

temperature range, drive capability, coupled with its

high stability and linear frequency pulling make it the

ideal reference oscillator. Its ability to function down to

a supply voltage of 2.4V and low power consumption

makes it particularly suitable for mobile applications

Standard Frequencies

■

9.6, 10.0, 12.8, 19.44, 20.0, 38.88, 49.152, 51.84MHz

Waveform

■

Square HCMOS 15pF load

■

Square ACMOS 50pF max. load

■

Sinewave 10k

// 10pF, AC-coupled

■

Clipped sinewave 10k

// 10pF, AC-coupled

Supply Voltage

■

Operating range 2.4 to 6.0V, see table

Current Consumption

■

HCMOS Typically

≈

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

e.g. 20MHz, 5V, 15pF

≈ 4mA

■

ACMOS Typically

≈

1+Frequency(MHz)*Supply(V)*{Load(pF)+23}*10-3 mA

■

Sinewave, 6 to 12 mA depending on frequency

■

Clipped Sinewave, Typically

≈

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

Package Outline

■

14.7 x 9.2 x 6.2mm SMD

Ageing

■

±1ppm maximum in first year

■

±3ppm maximum for 10 years

■

±1ppm maximum after reflow

Frequency Stability

■

Temperature: see table

■

Typical Supply Voltage Variation ±10% < ±0.2 ppm*

■

Typical Load Coefficient 15pF ±5pF < ±0.2 ppm*

* Depending on frequency and output type

Frequency Adjustment

■

Three options with external Voltage Control applied to

pad 1:

A - Ageing adjustment: > ±5ppm (Standard Option)

B - No frequency adjustment. Initial calibration @ 25°C

< ±0.5 ppm

C - High Pulling ±10ppm to ±50ppm can be available

depending on frequency and stability options.

Please consult our sales office

■

Linearity

< 1%

■

Slope

Positive

■

Input resistance

> 100k

■

Modulation bandwidth

> 2kHz

■

Standard control voltage ranges:

Without reference voltage

- Vs=5.0V 2.5V±2V

Without reference voltage

- Vs=3.3V 1.65V±1V

With reference voltage

- Vc=0V to Vref

Reference Voltage, Vref (HCMOS/ACMOS only)

■

Optional reference voltage output on pad 5, 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

For manual frequency adjustment (HCMOS/ACMOS output

only) connect an external 50k

potentiometer between

pad 5 (Reference Voltage) and pad 3 (GND) with wiper

connected to pad 1 (Voltage Control). Please specify

reference voltage as a part of the ordering code

Note: Please contact our sales office if a reference voltage

is required in combination with sine or clipped sinewave

output

Tri-state

■

Pad 2 open circuit or >0.6Vs output enabled

■

< 0.2Vs Tri-state

■

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

output options, but the oscillator and compensation

circuit are still active (current consumption <1mA)

Europe

Tel: +44 (0)1460 270200

Fax: +44 (0)1460 72578

Website: www.cmac.com

Americas Tel: +1 919 941 9333

Fax: +1 919 941 9371

Asia

Tel: +86 755 8826 5991

Fax: +86 755 8826 5990

发布紧急采购，3分钟左右您将得到回复。

采购需求

(若只采购一条型号，填写一行即可)

*型号	*数量	厂商	批号	封装

添加更多采购

采购需求

发布成功！您可以继续发布采购。也可以进入我的后台，查看报价

发布成功！您可以继续发布采购。也可以进入我的后台，查看报价

我的联系方式