鈥?/div>
Features
2.0
Description
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鈥?SOIC)
Custom frequency selections available - contact your
local AMI Sales Representative for more information
Figure 1: Pin Configuration
XIN
VDD
XTUNE
VSS
1
8
XOUT
VSS
CLKB
CLKA
2
3
4
7
6
5
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.
8-pin (0.150鈥? SOIC
Figure 2: Block Diagram
FS6209
Table 1: Crystal / Output Frequencies
DEVICE
FS6209-01
f
XIN
(MHz)
13.5
CLKA (MHz)
54
CLKB (MHz)
22.5792
(+1.12ppm)
NOTE: Contact AMI for custom PLL frequencies
XIN
VCXO
XOUT
XTUNE
PLL
DIVIDER
ARRAY
PLL
CLKA
CLKB
FS6209
This document contains information on a preproduction product. Specifications and information herein are subject to change without notice.
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