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VTC4のメーカーはVectron Internationalです、この部品の機能は「Voltage Controlled Temperature Compensated Crystal Oscillator」です。 |
部品番号 | VTC4 |
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部品説明 | Voltage Controlled Temperature Compensated Crystal Oscillator | ||
メーカ | Vectron International | ||
ロゴ | |||
このページの下部にプレビューとVTC4ダウンロード(pdfファイル)リンクがあります。 Total 7 pages
VTC4 series
Voltage Controlled Temperature Compensated Crystal Oscillator
www.DataSheet4U.com
The VTC4, VCTXCO
Features
• Clipped Sine Wave Output
• Output Frequencies to 27 MHz
• Fundamental Crystal Design
• Optional VCXO Function available
• Gold over nickel contact pads
• Hermetically Sealed Ceramic SMD package
• Product is compliant to RoHS directive
and fully compatible with lead free assembly
Applications
• Wireless Communications
• Base Stations
• Point to point radios
• Broadband Access
• Test Equipment
• Handsets
Description
Vectron’s VTC4 Temperature Compensated
Crystal Oscillator (TCXO) is a quartz stabilized,
clipped sine wave output, temperature
compensated oscillator, operating off either 2.8,
3.0, 3.3 or 5.0 volt supply.
Vectron International 267 Lowell Road, Hudson NH 03051 Tel: 1-88-VECTRON-1 e-mail: [email protected]
1 Page VTC4 Data Sheet
Figure 1. Typical Phase Noise Plot
Figure 2. Clipped Sine Wave Output
Vectron International 267 Lowell Rd, Hudson NH 03051 Tel: 1-88-VECTRON-1 e-mail: [email protected]
3Pages VTC4 Data Sheet
Handling Precautions
Although ESD protection circuitry has been designed into the the VTC4, proper precautions should be taken
when handling and mounting. VI employs a Human Body Model and a Charged-Device Model (CDM) for
ESD susceptibility testing and design protection evaluation. ESD thresholds are dependent on the circuit
parameters used to define the model. Although no industry wide standard has been adopted for the CDM, a
standard HBM of resistance = 1.5kohms and capacitance = 100pF is widely used and therefore can be
used for comparison purposes.
Table 6. ESD Ratings
Model
Human Body Model
Charged Device Model
Minimum
1000
1500
Conditions
MIL-STD-883 Method 3115
JESD 22-C101
Suggested IR profile
Devices are built using lead free epoxy and can also be subjected to standard lead free IR reflow conditions,
Table 7 shows max temperatures and lower temperatures can also be used e.g. peak temperature of 220C.
Table 7. Reflow Profile (IPC/JEDEC J-STD-020B)
Parameter
Symbol
PreHeat Time
tS
Ramp Up
Time Above 217 oC
Time To Peak Temperature
Time At 260 oC (max)
Time At 240 °C (max)
Ramp Down
R UP
tL
t AMB-P
tP
tp2
R DN
Value
150 sec Min, 200 sec Max
3 oC/sec Max
60 sec Min, 150 sec Max
480 sec Max
10 sec Max
60 sec Max
6 oC/sec Max
Vectron International 267 Lowell Rd, Hudson NH 03051 Tel: 1-88-VECTRON-1 e-mail [email protected]
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ページ | 合計 : 7 ページ | ||
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PDF ダウンロード | [ VTC4 データシート.PDF ] |
データシートを活用すると、その部品の主な機能と仕様を詳しく理解できます。 ピン構成、電気的特性、動作パラメータ、性能を確認してください。 |
部品番号 | 部品説明 | メーカ |
VTC1 | High Performance in a 5x7 package | ETC |
VTC2 | Voltage Controlled Temperature Compensated Crystal Oscillator | Vectron International |
VTC4 | Voltage Controlled Temperature Compensated Crystal Oscillator | Vectron International |