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參數(shù)資料
| 型號(hào)： | VTC1-J55A-21M250 |
| 廠商： | VECTRON INTERNATIONAL |
| 元件分類： | XO, clock |
| 英文描述： | TCVCXO, CLOCK, 21.25 MHz, CMOS OUTPUT |
| 文件頁(yè)數(shù)： | 5/8頁(yè) |
| 文件大?。?/td> | 256K |
| 代理商： | VTC1-J55A-21M250 |
VTC1 Data sheet
Vectron International 267 Lowell Rd, Hudson NH 03051
Tel: 1-88-VECTRON-1
e-mail: vectron@vectron.com
VCXO Functional Description
VCXO Feature: The VTC1 can be ordered with a VCXO function for applications were it will be used in a
PLL, or the output frequency needs fine tune adjustments. This is high impedance, 1 Mohm, input and can
be driven with an op-amp or terminated with adjustable resistors etc. Pin 1 should not be left floating on
the VCXO optional devices.
“No Adjust” Feature: In applications were the VTC1 will be not be used in a PLL, or the output frequency
does not fine tune adjustments, the best device to use would be a VTC1-x0xxx. By using the “no adjust”
option, the circuit is simplified as Vc does not need to adjusted or set to a predetermined voltage and pin 1
should be grounded or left open (but not set to a voltage such as the supply).
Outline Diagrams, Pad Layout and Pin Out
Table 3. Pinout
Pin #
Symbol
Function
1
N/C or
VC
No Connect (VTC1-x0xx)
or VCXO Control Voltage
2
GND
Electrical and Case Ground
3
fO
Output Frequency
4
VDD
Supply Voltage
NOTE: Additional pads are used to program and adjust the TCXO during manufacturing and should be left
open; do not terminate these to the supply voltage. Some designs do not include these additional pads.
Contact Pads are gold over nickel
Figure 3, Package drawing
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