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參數資料
| 型號： | ICS729TLFT |
| 元件分類： | 時鐘產生/分配 |
| 英文描述： | 36 MHz, OTHER CLOCK GENERATOR, PDSO6 |
| 封裝： | TSOT-23, 6 PIN |
| 文件頁數： | 1/6頁 |
| 文件大小： | 117K |
| 代理商： | ICS729TLFT |
ICS729
MDS 729 A
1
Revision 050605
Integrat ed Circuit Systems ● 525 Race Stre et, San Jo se, CA 9 5126 ● te l (40 8 ) 2 97-12 01 ● www.ics t.co m
SMALL 3.3 VOLT VCXO
PRELIMINARY INFORMATION
Description
Used in conjunction with an external pullable quartz
crystal, this monolithic integrated circuit replaces more
costly hybrid (canned) VCXO devices. The ICS729 is
designed primarily for data and clock recovery
applications within end products such as ADSL
modems, set-top box receivers, and telecom systems.
The frequency of the on-chip VCXO is adjusted by an
external control voltage input into pin VIN. Since VIN is
a high impedance input, it can be driven directly from a
PWM RC integrator circuit. Frequency output increases
with VIN voltage input. The usable range of VIN is 0 to
3.3 V.
Features
Uses an inexpensive 12 to 36 MHz external crystal
Output frequency range of 12 to 36 MHz
On-chip VCXO with guaranteed pull range of ±115
ppm minimum
VCXO tuning voltage 0 to 3.3 V
Packaged in 6-pin TSOT-23-6
A surface-mount VCXO crystal offers a
minimum-size solution
Block Diagram
12-36 MHz
Voltage
Controlled
Crystal
Oscillator
X1
X2
VIN
12-36 MHz
Pullable
Crystal
VDD
GND
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