鈥?/div>
Features
On-board crystal oscillator
Phase-locked loop (PLL) synthesizes desired CLK
frequency
Internal loop filter
Internal crystal oscillator load capacitance (16pF
nominal)
Only external components required are decoupling
capacitors
Minimal board footprint (8-pin 0.150" SOIC package)
VDD
CLK
VSS
n/c
FS6118
2
3
4
7
6
5
8-pin 0.150" SOIC
Table 1: Pin Descriptions
Key: AI = Analog Input; AO = Analog Output; DI = Digital Input; DI
U
= Input with Internal Pull-Up;
DI
D
= Input with Internal Pull-Down; DIO = Digital Input/Output; DI-3 = Three-Level Digital Input,
DO = Digital Output; P = Power/Ground; # = Active Low pin
PIN
TYPE
P
AO
AI
P
--
P
DO
P
NAME
VSS
XOUT
XIN
VDD
N/C
VSS
CLK
VDD
Ground
DESCRIPTION
2.0
Description
1
2
3
4
5
6
7
8
The FS6118 is a monolithic CMOS frequency synthesizer
IC designed for cost sensitive or space limited applica-
tions.
An on-board crystal oscillator accepts a quartz crystal
and provides a different, synthesized frequency on the
CLK output. The device is packaged in an 8-pin SOIC
package for a minimal board footprint.
Custom factory-programmed clock frequencies are avail-
able. Please contact your local AMI sales representative
for more information.
Crystal oscillator feedback
Crystal oscillator drive
Power supply (+5V)
No Connection
Ground
Clock Output
Power Supply (+5V)
Table 2: Font Description
Figure 1: Block Diagram
XIN
Crystal
Oscillator
Phase-
Locked Loop
DEVICE
FS6118-01
CRYSTAL FREQUENCY
(MHz)
14.31818
CLK FREQUENCY
(MHz)
40.0000
Custom frequencies available 鈥?contact AMI for more information
CLK
XOUT
FS6118
This document contains information on a product under development. American Microsystems, Inc. reserves the right to change or discontinue this product without notice.
,62
2.4.99
1
2
3
4
