VT83027 Datasheet, PDF (1/3 Pages) Vaishali Semiconductor – 27MHz, 3.3V VCXO (Voltage-Controlled Crystal Oscillator)

VT83027
27MHz, 3.3V VCXO
(Voltage-Controlled Crystal Oscillator)
Applications
•= Set-top boxes
•= Telecom switching
•= HDTV
•= MPEG Video clock source
General Description
The Vaishali VT83027 is a single-chip, integrated VCXO and Phase Locked Loop (PLL) clock synthesizer.
The device uses the VCXO and an analog Phase-Locked Loop (PLL) to accept a 13.5 MHz, 14 pF (pull
range of 200 ppm) crystal input, and produce a 27 MHz output. A 0 to 3V control signal is used to fine tune
the output clock frequency in the ±100ppm range.
Features
•= 3.3V supply operation
•= Low jitter PLL Clock Synthesizer
−= Zero ppm synthesis error
•= Uses inexpensive pullable crystal
•= ±12mA drive capability
•= On-chip oscillator with 200 ppm pull
range (±100 ppm)
•= 8 pin SOIC package
Figure 1. Functional Block Diagram
Figure 2. Pin Configuration
VIN
X2
13.5 MHz
Pullable
Crystal
X1
VDD1
VDD2
Load Cap
Control
Load
Caps
Low
Phase
osc _Noise
PLL
Output
Buffer
GND1
GND2
CLK1
X1
VDD1
VIN
GND2
VT83027
1
8
2
7
X2
GND1
3
6
VDD2
4
5 CLK
8 pin (150 mil) SOIC
2001-04-17
Vaishali Semiconductor
Page 1
www.vaishali.com
747 Camden Avenue, Suite C Campbell CA 95008
Ph. 408.377.6060
MDST-0003-03
Fax [phone]