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參數資料
| 型號： | 19.8CFPT-5301BXC |
| 廠商： | C-MAC MICROTECHNOLOGY |
| 元件分類： | XO, clock |
| 英文描述： | TCXO, CLOCK, 19.8 MHz, HCMOS OUTPUT |
| 封裝： | RESISTANCE WELDED, HERMATICALLY SEALED, DIP-14/4 |
| 文件頁數： | 1/3頁 |
| 文件大?。?/td> | 63K |
| 代理商： | 19.8CFPT-5301BXC |
CFPT-5300 SERIES
LEADED
TCXOs
ISSUE 1; 15 OCTOBER 2004
Delivery Options
■ Please contact our sales office for current lead times
Description
■ The CFPT-5300 series of temperature compensated
crystal oscillators (TCXOs), provide for ultra high stabilities
down to ±0.3ppm and operating temperature ranges as
wide as -55 to 95°C. Housed in an industry standard 4 pin
DIL 14 package, the oscillator uses C-MAC’s latest custom
ASIC “Pluto”, a single chip oscillator and analogue
compensation circuit. Its wide frequency range, operating
temperature range, coupled with it’s high stability and linear
frequency pulling make it the ideal reference oscilator. Its
ability to function down to supply voltage of 2.4V and low
power consumption makes it suitable for a wide range of
applications
Standard Frequency
■ 3.2, 4.096, 5.0, 6.4, 8.192, 9.6, 10.0, 12.8, 13.0, 14.4,
14.85, 16.384, 16.8, 19.2, 19.44, 19.8, 20, 32.768, 38.88,
40.0 MHz
Non - standard frequencies in the range 1.25MHz to
40.0MHz are available on request, please contact our
sales office
Waveform
■ Square HCMOS 15pF load
The following non-standard outputs are available on
request, contact sales office:
■ Square ACMOS 50pF max load
■ Sinewave, > 1.0pk-pk, 10k
// 10pF load
■ Clipped Sinewave, >0.8Vpk-pk, 10k
// 10pF load
Sinewave and clipped sinewave signals are superimposed
on a DC offset, to remove this offset insert an external
coupling capacitor in series with the output
Supply Voltages
■ 3.3V or 5.0V
(non standard supply voltages in the range 2.4V to 6.0V are
available on request, please contact our sales office)
Current Consumption
■ HCMOS Typically
1+Frequency(MHz)*Supply(V)*{Load(pF)+15}*10-3mA
Eg 20MHz, 5V, 15pF
4mA
■ Sinewave, < 8mA
■ Clipped sinewave,
1+Frequency(MHz)*1.2*{Load(pF)+30}*10-3mA
Package Outline
■ Low Profile DIL 14 resistance welded enclosure,
hermetically sealed
Ageing
■ ±1ppm maximum in first year, frequency < 20MHz
■ ±3ppm maximum for 10 years, frequency < 20MHz
■ ±2ppm maximum in first year, frequency > 20MHz
■ ±5ppm maximum for 10 years, frequency > 20MHz
Frequency Stability
■ Temperature: see table
■ Supply Voltage Variation ±10% < ±0.2ppm*
■ Load co-efficient 15pF ±5pF < ±0.2ppm*
* Dependent on frequency and output type
Frequency Adjustment
■ Option A (standard):
Control Voltage 1.5V±1.0V, applied to pin 1
> ±5ppm*, frequency < 20MHz
> ±7ppm, frequency > 20MHz
Linearity
<3%
Slope
Positive
Input resistance
>100k
Modulation Bandwidth
>2kHz
■ Option B:
> ±5ppm *(>±7ppm if frequency >20MHz) by means
of an external 100k
potentiometer connected as a
variable resistor from pin 1 to GND
* Higher adjustment range up to ±50ppm and
non standard control voltage ranges are available on
request. This may not be compatible with all stability
options, contact sales office
■ Option C:
No frequency adjustment, initial calibration @25°C
<±1.0ppm
Storage Temperature Range
■ -55 to 95°C
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
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