FS6182-01 [ONSEMI]
Clock Generator, CMOS, PDSO8,;
| 型号： | FS6182-01 |
| 厂家： | 
ONSEMI |
| 描述： | Clock Generator, CMOS, PDSO8, 光电二极管 |
| 文件： | 总6页 (文件大小：160K) |
| 中文： | 中文翻译 | 下载： | 下载PDF数据表文档文件 |
FS6182
VCXO Clock Generator IC
1.0 Features
2.0 Description
The FS6182 is a monolithic CMOS clock generator IC
designed to minimize cost and component count in digital
video/audio systems.
•
Three output clock frequencies
•
On-chip tunable voltage-controlled crystal oscillator
(VCXO) allows precise system frequency tuning
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.
•
•
•
•
•
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
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
frequencies together can eliminate unpredictable artifacts
in video systems.
Figure 1: Pin Configuration
1
8
7
6
5
CLKA
XTUNE
VDD
Table 1: Crystal / Output Frequencies
2
GND
fXIN
(MHz)
CLKA
(MHz)
CLKB
(MHz)
CLKC
(MHz)
3
XIN
CLKC
CLKB
DEVICE
4
XOUT
FS6182-01 13.500
27.000
54.000
13.500
8-pin (0.150″) SOIC
NOTE: Contact AMI for custom PLL frequencies and 5 volt operation
Figure 2: Block Diagram
XIN
CLKA
VCXO
PLL
XOUT
DIVIDER
CLKB
ARRAY
XTUNE
CLKC
FS6182
This document contains information on a new product. Specifications and information herein are subject to change without notice.
2.27.02
ISO9001
FS6182
VCXO Clock Generator IC
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
1
2
3
4
5
6
7
8
DO
P
CLKA
GND
Clock Output A
Ground
AI
XIN
VCXO Feedback
VCXO Drive
AO
DO
DO
P
XOUT
CLKB
CLKC
VDD
Clock Output B
Clock Output C
Power Supply (+3.3V)
VCXO Tune
AI
XTUNE
the oscillator circuit. The actual amount that changing the
load capacitance alters the oscillator frequency will be
dependent on the characteristics of the crystal as well as
the oscillator circuit itself.
3.0 Functional Block Description
3.1
Phase-Locked Loop (PLL)
Specifically, the motional capacitance of the crystal (usu-
ally referred to by crystal manufacturers as C1), the static
capacitance of the crystal (C0), and the load capacitance
(CL) of the oscillator determine the warping capability of
the crystal in the oscillator circuit.
The on-chip PLLs are a standard frequency- and phase-
locked loop architecture. The PLL multiplies the reference
oscillator to the desired frequency by a ratio of integers.
The frequency multiplication is exact with a zero synthe-
sis error.
A simple formula to obtain the warping capability of a
crystal oscillator is:
3.2
Voltage-Controlled Crystal
Oscillator (VCXO)
6
×
(
+
−
)
×
C1 CL2 CL1 10
2×
∆f (ppm) =
(
)
×
(
+
)
C0 CL2 C0 CL1
where CL1 and CL2 are the two extremes of the applied
load capacitance.
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.
EXAMPLE: A crystal with the following parameters is
used. With C1 = 0.02pF, C0 = 5pF, CL1 = 13pF, and CL2
35pF, the coarse tuning range (peak-to-peak) is:
=
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.
6
0.02×
(
35 −13
)
×
10
.
= 305ppm
∆f =
2×
(
5 + 35
)
×
(
5 +13
)
The oscillator operates the crystal resonator in the paral-
lel-resonant mode. Crystal warping, or the “pulling” of the
crystal oscillation frequency, is accomplished by altering
the effective load capacitance presented to the crystal by
2
2.27.02
ISO9001
FS6182
VCXO Clock Generator IC
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)
Input Voltage, dc
VDD
VI
VSS-0.5
VSS-0.5
VSS-0.5
-50
7
VDD+0.5
VDD+0.5
50
V
V
Output Voltage, dc
VO
IIK
V
Input Clamp Current, dc (VI < 0 or VI > VDD
)
mA
mA
°C
°C
°C
°C
kV
Output Clamp Current, dc (VI < 0 or VI > VDD
)
IOK
TS
TA
TJ
-50
50
Storage Temperature Range (non-condensing)
Ambient Temperature Range, Under Bias
Junction Temperature
-65
150
-55
125
125
Lead Temperature (soldering, 10s)
260
Input Static Discharge Voltage Protection (MIL-STD 883E, Method 3015.7)
2
CAUTION: ELECTROSTATIC SENSITIVE DEVICE
Permanent damage resulting in a loss of functionality or performance may occur if this device is subjected to a high-energy elec-
trostatic discharge.
Table 4: Operating Conditions
PARAMETER
SYMBOL
CONDITIONS/DESCRIPTION
3.3V ± 10%
MIN.
TYP.
MAX.
UNITS
Supply Voltage
VDD
TA
3.0
0
3.3
3.6
70
V
Ambient Operating Temperature Range
°C
3
2.27.02
ISO9001
FS6182
VCXO Clock Generator IC
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
Fundamental Mode
20
mA
Voltage Controlled Crystal Oscillator
Crystal Resonator Frequency
fXTAL
CL(xtal)
C1(xtal)
5
13.5
20
18
MHz
pF
As seen by a crystal connected to XIN and
XOUT (@ VXTUNE = mid-range)
Crystal Loading Capacitance
Crystal Resonator Motional Capacitance
VCXO Tuning Range
20
fF
ppm
ppm/V
uW
fXTAL = 13.5MHz; CL = 20pF; CMOT = 25fF
Note: positive delta F for positive delta V
RXTAL=20 ohm; CL = 20pF
300
100
200
VCXO Tuning Characteristic
Crystal Drive Level
Clock Outputs (CLKA, CLKB, CLKC)
High-Level Output Source Current *
Low-Level Output Sink Current *
IOH
IOL
VO = 2.0V
40
17
25
25
55
55
mA
mA
VO = 0.4V
zOH
zOL
IOSH
IOSL
VO = 0.1VDD; output driving high
VO = 0.1VDD; output driving low
VO = 0V; shorted for 30s, max.
VO = 3.3V; shorted for 30s, max.
Output Impedance *
Ω
Short Circuit Source Current *
Short Circuit Sink Current *
mA
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
%
From rising edge to next rising edge at VDD/2, CL =
10pF
Jitter, Absolute Period (pk-pk) *
150
ps
tj(∆P)
Rise Time *
tr
tf
VDD = 3.3V; VO = 0.3V to 3.0V; CL = 10pF
VDD = 3.3V; VO = 3.0V to 0.3V; CL = 10pF
(unless otherwise noted in Frequency Table)
From power valid
1
1
ns
ns
Fall Time *
Output Frequency Synthesis Error
VCXO Stabilization Time *
PLL Stabilization Time *
0
ppm
ms
us
tVCXOSTB
tPLLSTB
10
From VCXO stable
500
4
2.27.02
ISO9001
FS6182
VCXO Clock Generator IC
5.0 Package Information
Table 7: 8-pin SOIC (0.150") Package Dimensions
8
DIMENSIONS
INCHES
MILLIMETERS
MIN.
MAX.
MIN.
MAX.
A
A1
A2
B
0.061
0.004
0.055
0.013
0.068
0.0098
0.061
0.019
1.55
0.102
1.40
1.73
0.249
1.55
E
H
R
AMERICAN MICROSYSTEMS, INC.
0.33
0.49
1
C
D
E
0.0075 0.0098
0.191
4.80
0.249
4.98
ALL RADII:
0.005" TO 0.01"
0.189
0.150
0.196
0.157
h x 45°
7° typ.
3.81
3.99
B
e
e
0.050 BSC
1.27 BSC
C
A2
A
H
h
0.230
0.010
0.016
0°
0.244
0.016
0.035
8°
5.84
0.25
0.41
0°
6.20
0.41
0.89
8°
L
D
θ
A1
L
BASE
PLANE
SEATING
PLANE
Θ
Table 8: 8-pin SOIC (0.150") Package Characteristics
PARAMETER
SYMBOL
CONDITIONS/DESCRIPTION
Air flow = 0 m/s
TYP.
UNITS
Thermal Impedance, Junction to Free-Air
8-pin 0.150” SOIC
110
°C/W
ΘJA
Corner lead
2.0
1.6
Lead Inductance, Self
L11
nH
Center lead
Lead Inductance, Mutual
Lead Capacitance, Bulk
L12
Any lead to any adjacent lead
Any lead to VSS
0.4
nH
pF
C11
0.27
5
2.27.02
ISO9001
FS6182
VCXO Clock Generator IC
6.0 Ordering Information
DEVICE
ORDERING CODE
OPERATING
TEMPERATURE RANGE
SHIPPING
CONFIGURATION
PACKAGE TYPE
NUMBER
8-pin (0.150”) SOIC
(Small Outline Package)
11640-804
11640-814
FS6182-01
FS6182-01
Tape and Reel
Tubes
0°C to 70°C (Commercial)
0°C to 70°C (Commercial)
8-pin (0.150”) SOIC
(Small Outline Package)
Copyright © 1998 American Microsystems, Inc.
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
6
2.27.02
ISO9001
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