VCXO Clock Generator Features Description Three output
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FS6182
VCXO Clock Generator
Features
Description
Three output clock frequencies On-chip tunable voltage-controlled crystal oscillator (VCXO) allows precise system frequency tuning Wide crystal "pulling" range (typically 300ppm) VCXO tuning range from volt 3.3V supply voltage (contact factory Small circuit board footprint (8-pin 0.150 SOIC) Custom frequency selections available contact your local Sales Representative more information
Figure Configuration
CLKA XOUT
FS6182 monolithic CMOS clock generator designed minimize cost component count digital video/audio systems. core FS6182 circuitry that implements voltage-controlled crystal oscillator when external resonator (nominally 13.5MHz) attached. VCXO allows device frequencies precisely adjusted systems that have frequency matching requirements, such digital satellite receivers. high-resolution phase-locked loop generates three output clocks (CLKA, CLKB, CLKC) through array post-dividers. frequencies ratiometrically derived from VCXO frequency. locking output frequencies together eliminate unpredictable artifacts video systems.
XTUNE CLKC CLKB
FS6182
Table Crystal Output Frequencies
DEVICE FS6182-01 fXIN (MHz) 13.500 CLKA (MHz) 27.000 CLKB (MHz) 54.000 CLKC (MHz) 13.500
8-pin (0.150 SOIC
NOTE: Contact custom frequencies volt operation
Figure Block Diagram
VCXO XOUT XTUNE DIVIDER ARRAY
CLKA
CLKB
CLKC
FS6182
This document contains information product. Specifications information herein subject change without notice.
ISO9001
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FS6182
VCXO Clock Generator
Table Descriptions
Key: Analog Input; Analog Output; Digital Input; Input with Internal Pull-Up; Input with Internal Pull-Down; Digital Input/Output; DI-3 Three-Level Digital Input, Digital Output; Power/Ground; Active
TYPE
NAME CLKA XOUT CLKB CLKC XTUNE Clock Output Ground VCXO Feedback VCXO Drive Clock Output Clock Output Power Supply (+3.3V) VCXO Tune
DESCRIPTION
Functional Block Description
Phase-Locked Loop (PLL)
on-chip PLLs standard frequency- phaselocked loop architecture. multiplies reference oscillator desired frequency ratio integers. frequency multiplication exact with zero synthesis error.
oscillator circuit. actual amount that changing load capacitance alters oscillator frequency will dependent characteristics crystal well oscillator circuit itself. Specifically, motional capacitance crystal (usually referred crystal manufacturers C1), static capacitance crystal (C0), load capacitance (CL) oscillator determine warping capability crystal oscillator circuit. simple formula obtain warping capability crystal oscillator
Voltage-Controlled Crystal Oscillator (VCXO)
ppm)
VCXO provides tunable, low-jitter frequency reference rest FS6182 system components. Loading capacitance crystal internal FS6182. external components (other than resonator itself) required operation VCXO. Continuous fine-tuning VCXO frequency accomplished varying voltage XTUNE pin. total change (from extreme other) effective loading capacitance from 13pF 35pF. oscillator operates crystal resonator parallel-resonant mode. Crystal warping, "pulling" crystal oscillation frequency, accomplished altering effective load capacitance presented crystal
where extremes applied load capacitance. EXAMPLE: crystal with following parameters used. With 0.02pF, 5pF, 13pF, 35pF, coarse tuning range (peak-to-peak)
0.02
ISO9001
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FS6182
VCXO Clock Generator
Electrical Specifications
Table Absolute Maximum Ratings
Stresses above those listed under Absolute Maximum Ratings cause permanent damage device. These conditions represent stress rating only, functional operation device these other conditions above operational limits noted this specification implied. Exposure maximum rating conditions extended conditions affect device performance, functionality, reliability.
PARAMETER Supply Voltage (VSS ground) Input Voltage, Output Voltage, Input Clamp Current, VDD) Output Clamp Current, VDD) Storage Temperature Range (non-condensing) Ambient Temperature Range, Under Bias Junction Temperature Lead Temperature (soldering, 10s) Input Static Discharge Voltage Protection (MIL-STD 883E, Method 3015.7)
SYMBOL
MIN. VSS-0.5 VSS-0.5 VSS-0.5
MAX. VDD+0.5 VDD+0.5
UNITS
CAUTION: ELECTROSTATIC SENSITIVE DEVICE
Permanent damage resulting loss functionality performance occur this device subjected high-energy electrostatic discharge.
Table Operating Conditions
PARAMETER Supply Voltage Ambient Operating Temperature Range SYMBOL CONDITIONS/DESCRIPTION 3.3V MIN. TYP. MAX. UNITS
ISO9001
10.1.99
FS6182
VCXO Clock Generator
Table Electrical Specifications
Unless otherwise stated, 3.3V 10%, load output, ambient temperature range 70°C. Parameters denoted with asterisk represent nominal characterization data production tested specific limits. Where given, characterization data typical. Negative currents indicate current flows device.
PARAMETER Overall Supply Current, Dynamic, with Loaded Outputs Voltage Controlled Crystal Oscillator Crystal Resonator Frequency Crystal Loading Capacitance Crystal Resonator Motional Capacitance VCXO Tuning Range VCXO Tuning Characteristic Crystal Drive Level Clock Outputs (CLKA, CLKB, CLKC) High-Level Output Source Current Low-Level Output Sink Current Output Impedance Short Circuit Source Current Short Circuit Sink Current
SYMBOL
CONDITIONS/DESCRIPTION
MIN.
TYP.
MAX.
UNITS
fXTAL 13.5MHz; 10pF
fXTAL CL(xtal) C1(xtal)
Fundamental Mode seen crystal connected XOUT VXTUNE mid-range) fXTAL 13.5MHz; 20pF; CMOT 25fF Note: positive delta positive delta RXTAL=20 ohm; 20pF
13.5
ppm/V
IOSH IOSL
2.0V 0.4V 0.1VDD; output driving high 0.1VDD; output driving shorted 30s, max. 3.3V; shorted 30s, max.
Table Timing Specifications
Unless otherwise stated, 3.3V 10%, load output, ambient temperature range 70°C. Parameters denoted with asterisk represent nominal characterization data production tested specific limits. Where given, characterization data typical.
PARAMETER Clock Outputs (CLKx) Duty Cycle Jitter, Absolute Period (pk-pk) Rise Time Fall Time Output Frequency Synthesis Error VCXO Stabilization Time Stabilization Time
SYMBOL
CONDITIONS/DESCRIPTION
MIN.
TYP.
MAX.
UNITS
tclk; Measured VDD/2 tj(P) tVCXOSTB tPLLSTB From rising edge next rising edge VDD/2, 10pF 3.3V; 0.3V 3.0V; 10pF 3.3V; 3.0V 0.3V; 10pF (unless otherwise noted Frequency Table) From power valid From VCXO stable
ISO9001
10.1.99
FS6182
VCXO Clock Generator
Package Information
Table 8-pin SOIC (0.150") Package Dimensions
DIMENSIONS INCHES MIN. 0.061 0.004 0.055 0.013 0.0075 0.189 0.150 0.230 0.010 0.016 MAX. 0.068 0.0098 0.061 0.019 0.0098 0.196 0.157 0.244 0.016 0.035 MILLIMETERS MIN. 1.55 0.102 1.40 0.33 0.191 4.80 3.81 5.84 0.25 0.41 MAX. 1.73 0.249 1.55 0.49 0.249 4.98 3.99 6.20 0.41 0.89
BASE PLANE RADII: 0.005" 0.01"
SEATING PLANE
typ.
0.050
1.27
Table 8-pin SOIC (0.150") Package Characteristics
PARAMETER Thermal Impedance, Junction Free-Air 8-pin 0.150" SOIC Lead Inductance, Self Lead Inductance, Mutual Lead Capacitance, Bulk SYMBOL CONDITIONS/DESCRIPTION flow Corner lead Center lead lead adjacent lead lead TYP. 0.27 UNITS °C/W
ISO9001
10.1.99
FS6182
VCXO Clock Generator
Ordering Information
DEVICE NUMBER FS6182-01 FS6182-01 PACKAGE TYPE 8-pin (0.150") SOIC (Small Outline Package) 8-pin (0.150") SOIC (Small Outline Package) OPERATING TEMPERATURE RANGE (Commercial) (Commercial) SHIPPING CONFIGURATION Tape Reel Tubes
ORDERING CODE
11640-804 11640-814
Copyright 1998 American Microsystems, Inc.
Devices sold covered warranty patent indemnification provisions appearing Terms Sale only. makes warranty, express, statutory implied description, regarding information forth herein regarding freedom described devices from patent infringement. makes warranty merchantability fitness purposes. reserves right discontinue production change specifications prices time without notice. AMI's products intended commercial applications. Applications requiring extended temperature range, unusual environmental requirements, high reliability applications, such military, medical life-support life-sustaining equipment, specifically recommended without additional processing such applications.
American Microsystems, Inc., 2300 Buckskin Rd., Pocatello, 83201, (208) 233-4690, (208) 234-6796, Address: http://www.amis.com E-mail: tgp@amis.com
ISO9001
10.1.99
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