FS6209 Datasheet, PDF (1/6 Pages) List of Unclassifed Manufacturers – DUAL PLL VCXO CLOCK GENERATOR IC

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February 1999
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1.0 Features
• Dual phase-locked loop (PLL) device two output
clock frequencies
• On-chip tunable voltage-controlled crystal oscillator
(VCXO) allows precise system frequency tuning
• 3.3V supply voltage
• Small circuit board footprint (8-pin 0.150″ SOIC)
• Custom frequency selections available - contact your
local AMI Sales Representative for more information
Figure 1: Pin Configuration
XIN ¹
VDD ²
XTUNE ³
VSS ⁴
8 _XOUT
7 _VSS
6 _CLKB
5 _CLKA
8-pin (0.150″) SOIC
2.0 Description
The FS6209 is a monolithic CMOS clock generator IC
designed to minimize cost and component count in digital
video/audio systems.
At the core of the FS6209 is circuitry that implements a
voltage-controlled crystal oscillator when an external
resonator (nominally 13.5MHz) is attached. The VCXO
allows device frequencies to be precisely adjusted for use
in systems that have frequency matching requirements,
such as digital satellite receivers.
Two high-resolution phase-locked loops generate two
output clocks (CLKA and CLKB) through an array of post-
dividers. All frequencies are ratiometrically derived from
the VCXO frequency. The locking of all the output fre-
quencies together can eliminate unpredictable artifacts in
video systems and reduce electromagnetic interference
(EMI) due to frequency harmonic stacking.
Table 1: Crystal / Output Frequencies
DEVICE
fXIN (MHz)
CLKA (MHz)
FS6209-01
13.5
54
NOTE: Contact AMI for custom PLL frequencies
CLKB (MHz)
22.5792
(+1.12ppm)
Figure 2: Block Diagram
XIN
XOUT
XTUNE
VCXO
CLKA
PLL
DIVIDER
ARRAY
PLL
CLKB
FS6209
This document contains information on a preproduction product. Specifications and information herein are subject to change without notice.
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