11640-814 - ON Semiconductor L.L.C.

This document contains information on a new product. Specifications and information herein are subject to change without notice.2.27.02

FS6182

FS6182FS6182

FS6182

VCXO Clock Generator IC

VCXO Clock Generator ICVCXO Clock Generator IC

VCXO Clock Generator IC

ISO9001

ISO9001ISO9001

ISO9001

1.0 Features

• 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 0-3 volt

• 3.3V supply voltage (contact factory for 5V)

• 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

1 8

CLKA

GND

XIN

XOUT

VDD

CLKC

CLKB

XTUNE

FS6182

8-pin (0.150″) SOIC

2.0 Description

The FS6182 is a monolithic CMOS clock generator IC

designed to m inim ize cost a nd com ponen t count in digi tal

video/audio systems.

At the core of the FS6182 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.

A high-resolution phase-locked loop generates three out-

put clocks (CLKA, CLKB, and CLKC) through an array of

post-dividers. All frequencies are ratiometrically derived

from the VCXO frequency. The locking of all the output

frequenc ies toget her can el iminate unpre dictable artif acts

in video s ystems.

Table 1: Crystal / Output Frequencies

DEVICE fXIN

(MHz) CLKA

(MHz) CLKB

(MHz) CLKC

(MHz)

FS6182-01 13.500 27.000 54.000 13.500

NOTE: Contact AMI for custom PLL frequencies and 5 volt operation

Figure 2: Block Diagram

VCXO

FS6182

PLL

XOUT

XIN

CLKC

CLKA

XTUNE

DIVIDER

ARRAY

CLKB

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Table 2: Pin Descriptions

Key: AI = Analog Input; AO = Analog Output; DI = Digital Input; DIU = Input with Internal Pull-Up; DID = 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 NAME DESCRIPTION

1DOCLKAClock Output A

2 P GND Ground

3 AI XIN VCXO Feedback

4 AO XOUT VCXO Drive

5DOCLKBClock Output B

6DOCLKCClock Output C

7 P VDD Power Supply (+3.3V)

8 AI XTUNE VCXO Tune

3.0 Functional Bl ock Descripti on

3.1 Phase-Locked Loop (PLL)

The on-chip PLLs are a standard frequency- and phase-

lock ed loop archi tec tur e. The PLL multiplies t he reference

oscillator to the desired frequency by a ratio of integers.

The frequency multiplication is exact with a zero synthe-

sis error.

3.2 Voltage-Controlled Crystal

Oscillator (VCXO)

The VCXO provides a tunable, low-jitter frequency refer-

ence for the rest of the FS6182 system components.

Loading capacitance for the crystal is internal to the

FS6182. No external components (other than the reso-

nator itself) are required for operation of the VCXO.

Continuous fine-tuning of the VCXO frequency is accom-

plished by varying the voltage on the XTUNE pin. The

total change (from one extreme to the other) in effective

loading capacitance is from 13pF to 35pF.

The oscillator operates the crystal resonator in the paral-

lel-reso nant mode. Cr ystal warpin g, or the “pul ling” of the

crystal oscillation frequency, is accomplished by altering

the eff ective load ca pacitance presented to the crystal b y

the oscillator circuit. T he actual amount that changin g the

load capacitance alters the oscillator frequency will be

dependent o n the charact eristics of the cr yst al as well as

the oscillator circuit itself.

Specifically, the motional capacit ance of the cr ystal (usu-

ally referr ed to by cr ystal m anufactur ers as C1), the st atic

capacitance of the crystal (C0), and the load capacitance

(CL) of the oscillator determine the warping capability of

the cry stal in the oscillator circuit.

A simple formula to obtain the warping capability of a

crystal oscillator is:

()

()()

CCCC CCC

ppmf LL

1020

121

210

)( +×+× ×−×

=∆

where CL1 and CL2 are the two extremes of the applied

load capacitance.

EXAMPLE: A crystal with the following parameters is

used. With C1 = 0.02 pF, C0 = 5pF , CL1 = 13pF, a nd CL2 =

35pF, the coarse tuning range (peak-to-peak) is:

()

()()

ppm

f305

1353552 106

1335020 =

+×+× ×−×

=∆ .

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VCXO Clock Generator IC

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VCXO Clock Generator IC

ISO9001

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4.0 Electrical Specifications

Table 3: Absolute Maximum Ratings

Stresses above those listed under Absolute Maximum Ratings may cause permanent damage to the device. These conditions represent a stress rating only, and functional operation of the device at

these or any other conditions above the operational limits noted in this specification is not implied. Exposure to maximum rating conditions for extended conditions may affect device performance,

functionality, and reliability.

PARAMETER SYMBOL MIN. MAX. UNITS

Supply Voltage (VSS = ground) VDD VSS-0.5 7 V

Input Voltage, dc VIVSS-0.5 VDD+0.5 V

Output Voltage, dc VOVSS-0.5 VDD+0.5 V

Input Clamp Current, dc (V I < 0 or VI > VDD)I

IK -50 50 mA

Output Clamp Current, dc (VI < 0 or VI > VDD)I

OK -50 50 mA

Storage Temperature Range (non-condensing) TS-65 150 °C

Ambient Temperature Range, Under Bias TA-55 125 °C

Junction Temperature TJ125 °C

Lead Temperature (soldering, 10s) 260 °C

Input Static Disc harge Voltage Protection (MIL-STD 883E, Method 3015.7) 2 kV

CAUTION: ELECTROSTATIC SENSITIVE DEVICE

Permanent damage res ulting in a loss of functi onality or performance may occur if this devi ce is subjected to a high-energy elec-

trostatic discharge.

Table 4: Operating Conditions

PARAMETER SYMBOL CONDITIONS/DESCRIPTION MIN. TYP. MAX. UNITS

Supply Voltage VDD 3.3V ± 10% 3.0 3.3 3.6 V

Ambient Operating Temperature Range TA070°C

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Table 5: DC Electrical Specifications

Unless otherwise stated, VDD = 3.3V ± 10%, no load on any output, and ambient temperature range TA = 0°C to 70°C. Parameters denoted with an asterisk ( * ) represent nominal characterization

data and are not production tested to any specific limits. Where given, MIN and MAX characterization data are ± 3σ from typical. Negative currents indicate current flows out of the device.

PARAMETER SYMBOL CONDITIONS/DESCRIPTION MIN. TYP. MAX. UNITS

Overall

Supply Current, Dynamic, with Loaded

Outputs IDD fXTAL = 13.5MHz; CL = 10pF 20 mA

Voltage Controlled Crystal Oscillator

Crystal Resonator Frequency fXTAL Fundamental Mode 5 13.5 18 MHz

Crystal Loadi ng Capaci tance CL(xtal) As seen by a crystal connected to XIN and

XOUT (@ VXTUNE = mid-range) 20 pF

Crystal Resonator Motional Capacitance C1(xtal) 20 fF

VCXO Tuning Range fXTAL = 13.5MHz; CL = 20pF; CMOT = 25fF 300 ppm

VCXO Tuning Characterist ic Note: posit i ve delta F for positive delta V 100 ppm/V

Crystal Dri ve Level RXTAL=20 ohm; CL = 20pF 200 uW

Clock Outputs (CLKA, CLKB, CLKC)

High-Level Output Sourc e Current * IOH VO = 2.0V 40 mA

Low-Level Output Sink Current * IOL VO = 0.4V 17 mA

zOH VO = 0.1VDD; output drivi ng hi gh 25

Output Impedance * zOL VO = 0.1VDD; output dri ving l ow 25 Ω

Short Circuit S ource Current * IOSH VO = 0V; shorted for 30s, max. 55 mA

Short Circuit S i nk Current * IOSL VO = 3.3V; shorted for 30s, max. 55 mA

Table 6: AC Timing Specifications

Unless otherwise stated, VDD = 3.3V ± 10%, no load on any output, and ambient temperature range TA = 0°C to 70°C. Parameters denoted with an asterisk ( * ) represent nominal characterization

data and are not production tested to any specific limits. Where given, MIN and MAX characterization data are ± 3σ from typical.

PARAMETER SYMBOL CONDITIONS/DESCRIPTION MIN. TYP. MAX. UNITS

Clock Outputs (CLKx)

Duty Cycle * thi / tclk; Measured at VDD/2 43 57 %

Jitter, Absolute Period (pk-pk) * tj(∆P) From rising edge to next ris i ng edge at VDD/2, CL =

10pF 150 ps

Rise Time * trVDD = 3.3V; VO = 0.3V to 3.0V; CL = 10pF 1 ns

Fall Time * tfVDD = 3.3V; VO = 3.0V to 0.3V; CL = 10pF 1 ns

Output Frequency Synthesis Error (unless otherwise noted in Frequency Table) 0 ppm

VCXO Stabilization Time * tVCXOSTB From power valid 10 ms

PLL Stabilization Time * tPLLSTB From V CXO stable 500 us

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FS6182

FS6182FS6182

FS6182

VCXO Clock Generator IC

VCXO Clock Generator ICVCXO Clock Generator IC

VCXO Clock Generator IC

ISO9001

ISO9001ISO9001

ISO9001

5.0 Package Information

Table 7: 8-pin SOIC (0.150") Package Dimensions

DIMENSIONS

INCHES MILLIMETERS

MIN. MAX. MIN. MAX.

A 0.061 0.068 1.55 1.73

A1 0.004 0.0098 0.102 0.249

A2 0.055 0.061 1.40 1.55

B 0.013 0.019 0.33 0.49

C 0.0075 0.0098 0.191 0.249

D 0.189 0.196 4.80 4.98

E 0.150 0.157 3.81 3.99

e 0.050 BSC 1.27 BSC

H 0.230 0.244 5.84 6.20

h 0.010 0.016 0.25 0.41

L 0.016 0.035 0.41 0.89

Θ0°8°0°8°

SEATING

PLANE

1ALL RADII:

0.005" TO 0.01"

BASE

PLANE

AMERICAN MICROSYSTEMS, INC.

7° typ.h x 45°

Table 8: 8-pin SOIC (0.150") Package Characteristics

PARAMETER SYMBOL CONDITIONS/DESCRIPTION TYP. UNITS

Thermal Impedance, Junction to Free-Air

8-pin 0.150” SOIC ΘJA Air flow = 0 m/s 110 °C/W

Corner lead 2.0

Lead Inductanc e, Self L11 Center lead 1.6 nH

Lead Inductanc e, Mutual L12 Any lead to any adjacent l ead 0.4 nH

Lead Capacitance, Bulk C11 Any lead to VSS 0.27 pF

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VCXO

CXOVCXO

CXO Clock Generator IC

Clock Generator ICClock Generator IC

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6.0 Ordering Information

ORDERING CODE DEVICE

NUMBER P ACKAGE TYPE OPERATING

TEMPERATURE RANGE SHIPPING

CONFIGURATION

11640-804 FS6182-01 8-pin (0.150”) S OIC

(Small Outline Package) 0°C to 70°C (Commercial) Tape and Reel

11640-814 FS6182-01 8-pin (0.150”) S OIC

(Small Outline Package) 0°C to 70°C (Commercial) Tubes

Devices sold by AMI are covered by the warranty and patent indemnification provisions appearing in its Terms of Sale only. AMI

makes no warranty, express, statutory implied or by description, regarding the information set forth herein or regarding the freedom

of the described devices from patent infringement. AMI makes no warranty of merchantability or fitness for any purposes. AMI re-

serves the right to discontinue production and change specifications and prices at any time and without notice. AMI’s products are

intended for use in commercial applications. Applications requiring extended temperature range, unusual environmental require-

ments, or high reliability applications, such as military, medical life-support or life-sustaining equipment, are specifically not recom-

mended without additional processing by AMI for such applications.

American Microsystems, Inc., 2300 Buckskin Rd., Pocatello, ID 83201, (208) 233-4690, FAX (208) 234-6796,

WWW Address: http://www.amis.com E-mail: tgp@amis.com