VT73127/DW Просмотр технического описания (PDF) - Vaishali Semiconductor

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VT73127/DW

27 MHz 3.3V VCXO with Output Enable

Vaishali Semiconductor  

Preliminary

VT73127

27 MHz 3.3V VCXO with Output Enable

Applications

•= Crystal-driven clock source

General Description

The Vaishali VT73127 is a single-chip, low-jitter Voltage-Controlled-Crystal-Oscillator. The device accepts

a 27 MHz, 20 pF crystal input, and produces a low jitter output at the same frequency. The output is

enabled when OE is logic HIGH and goes into high impedance state when OE is logic LOW. A 0 to 3.0V

control signal is used to fine tune the output clock frequency in the ±100ppm range.

Features

•= 3.3V operating voltage

•= Uses inexpensive pullable crystals

•= 12mA drive capability at TTL levels

•= On-chip oscillator with 200 ppm pull range (±100 ppm)

•= Active High output enable

•= Die only

Figure 1. Functional Block Diagram

VDD1

VDD2

VIN

X2

27 MHz

Pullable

Crystal

Load Cap Control

Load

Caps

Oscillator

X1

GND

Output

CLK

Buffer

OE

GND

2001-08-06

Page 1

MDST-0012-02

www.vaishali.com

Vaishali Semiconductor 747 Camden Avenue, Suite C Campbell CA 95008 Ph. 408.377.6060 Fax 408.377.6063

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