Datasheet ICS650R-05, ICS650R-05T Datasheet (ICST)

PRELIMINARY

PRELIMINARY

INFORMATION

INFORMATION

Description Features

ICS650-05

HDTV Clock Synthesizer

The ICS650-05 is a low cost, low jitter, high
performance clock synthesizer designed to
produce 74.175824 MHz and 74.250000 MHz as
necessary for HDTV applications. Using our
patented analog Phase-Locked Loop (PLL)
techniques, the device uses a 27.0 MHz clock or
fundamental crystal input to produce buffered,
fixed clocks and a selectable frame rate clock for
HDTV systems.

Block Diagram

Clock

Synthesis

FRS

and

Control

Circuit

• Packaged in 20 pin tiny SSOP (QSOP)

• Input Frequency of 27.0 MHz

• Zero ppm synthesis error in output clocks

• Provides fixed 13.5 MHz, dual 27.0 MHz, and

54.0 MHz output clocks with a selectable Frame
Rate Clock of 74.175824 MHz or

74.250000 MHz

• Ideal for HDTV applications

• 3.3 V or 5.0 V operating voltage

Output

Buffer

Output

Buffer

Output

Buffers

FRCLK

54.0 MHz

13.5 MHz

Input

27.0 MHz

MDS 650-05 A 1 Revision 081199 Printed 12/4/00

Integrated Circuit Systems • 525 Race Street • San Jose •CA•95126• [phone]tel • [phone]fax

Buffer/Crystal

Oscillator

Output

Buffers

Output

Buffer

OE (all outputs)

27.0 MHz

27.0 MHz

Pin Assignment

PRELIMINARY

PRELIMINARY

INFORMATION

INFORMATION

HDTV Clock Synthesizer

ICS650-05

VDD

X2

X1/ICLK

VDD
VDD

GND

NC

27M

13.5M
GND

1

2

3
4

5
6

7
8

9

20
19

18

17

16
15

14
13

12
1110

VDD
OE

FRS
FRCLK
VDD
GND

GND
54M
27M

GND

FRCLK Output Select Table (in MHz)

FRS Pin 18 FRCLK Pin 17

0 74.175824
1 74.250000

20 pin SSOP (QSOP)

Pin Descriptions

Pin # Name Type Description

1 VDD P Connect to +3.3 V or +5.0 V. Must be same as other VDDs.
2 X2 XO Crystal connection to a 27.0 MHz crystal or leave unconnected for clock input
3 X1/ICLK XI Crystal connection. Connect to a 27.0 MHz fundamental mode crystal or clock input.
4 VDD P Connect to +3.3 V or +5.0 V. Must be same as other VDDs.
5 VDD P Connect to +3.3 V or +5.0 V. Must be same as other VDDs.
6 GND P Connect to ground.
7 NC - No Connect. Do not connect anything to this pin.
8 27M O 27 MHz buffered oscillator clock output.

9 13.5M O 13.5 MHz clock output.
10 GND P Connect to ground.
11 GND P Connect to ground.
12 27M O 27 MHz buffered clock output.
13 54M O 54 MHz buffered clock output.
14 GND P Connect to ground.
15 GND P Connect to ground.
16 VDD P Connect to +3.3 V or +5.0 V. Must be same as other VDDs.
17 FRCLK O Frame Rate Clock as shown on table.
18 FRS I Frame Rate Frequency Select input pin. Determines FRCLK output as shown on table.
19 OE I Output Enable. Tri-states all clocks when low.
20 VDD P Connect to +3.3 V or +5.0 V. Must be same as other VDDs.

Key: I = Input with internal pull-up; O = output; P = power supply connection; XI, XO = crystal
connections

MDS 650-05 A 2 Revision 081199 Printed 12/4/00

Integrated Circuit Systems • 525 Race Street • San Jose •CA•95126• [phone]tel • [phone]fax

PRELIMINARY

ABSOLUTE MAXIMUM RATINGS (note 1)

DC CHARACTERISTICS (VDD = 3.3V or 5V unless noted)

AC CHARACTERISTICS (VDD = 3.3V or 5V unless noted)

exposure to levels above the operating limits but below the Absolute Maximums may affect device reliability.

PRELIMINARY

INFORMATION

INFORMATION

ICS650-05

HDTV Clock Synthesizer

Electrical Specifications

Parameter Conditions Minimum Typical Maximum Units

Supply voltage, VDD Referenced to GND 7 V
Inputs and Clock Outputs Referenced to GND -0.5 VDD+0.5 V
Ambient Operating Temperature 0 70
Soldering Temperature Max of 10 seconds 260
Storage temperature -65 150

Operating Voltage, VDD 3.0 5.5 V
Input High Voltage, VIH FRS, OE 2 V
Input Low Voltage, VIL FRS, OE 0.8 V
Output High Voltage, VOH VDD=3.3V, IOH=-8mA 2.4 V
Output Low Voltage, VOL VDD=3.3V, IOL=8mA 0.4 V
Output High Voltage, VOH, VDD = 3.3 or 5V IOH=-8mA VDD-0.4 V
Operating Supply Current, IDD, at 5V No Load 26 mA
Operating Supply Current, IDD, at 3.3V No Load 14 mA
Short Circuit Current, VDD = 3.3 V Each output ±50 mA
Input Capacitance Except X1 7 pF

°C
°C
°C

Input Crystal or Clock Frequency 27 MHz
Output Clocks Accuracy (synthesis error) All clocks 1 ppm
Output Clock Rise Time 0.8 to 2.0V 1.5 ns
Output Clock Fall Time 2.0 to 0.8V 1.5 ns
Output Clock Duty Cycle At VDD/2 40 50 60 %
One Sigma Jitter, ACLK VDD= 3.3 V 100 ps
VDD= 5.0 V 40 ps
Absolute Clock Period Jitter VDD= 3.3 V ±300 ps
VDD= 5.0 V ±200 ps

Notes: 1. Stresses beyond those listed under Absolute Maximum Ratings could cause permanent damage to the device. Prolonged

External Components

A minimum number of external components are required for proper operation. A decoupling capacitor of

0.01 µF should be connected between VDD and GND on pins 4 and 6, and 16 and 14, and a 33 Ω
terminating resistor may be used on each clock output if the trace is longer than 1 inch.

MDS 650-05 A 3 Revision 081199 Printed 12/4/00

Integrated Circuit Systems • 525 Race Street • San Jose •CA•95126• [phone]tel • [phone]fax

PRELIMINARY

Millimeters

PRELIMINARY

Package Outline and Package Dimensions

E H

h x 45°

D

INFORMATION

INFORMATION

HDTV Clock Synthesizer

20 pin SSOP

Symbol Min Max

ICS650-05

A 1.55 1.73

b 0.203 0.305
c 0.190 0.254

D 8.560 8.740

E 3.810 4.000

H 5.840 6.200

e
h 0.410
L 0.016 0.035

Q 0.127 0.250

Q

c

e

b

L

A

Ordering Information

Part/Order Number Marking Package Shipping Temperature

ICS650R-05 ICS650R-05 20 pin SSOP Tubes 0 to 70 °C

ICS650R-05T ICS650R-05 20 pin SSOP Tape and Reel 0 to 70 °C

While the information presented herein has been checked for both accuracy and reliability, Integrated Circuit Systems, Incorporated (ICS) assumes no responsibility for either its
use or for the infringement of any patents or other rights of third parties, which would result from its use. No other circuits, patents, or licenses are implied. This product is
intended for use in normal commercial applications. Any other applications such as those requiring extended temperature range, high reliability, or other extraordinary
environmental requirements are not recommended without additional processing by ICS. ICS reserves the right to change any circuitry or specifications without notice. ICS does
not authorize or warrant any ICS product for use in life support devices or critical medical instruments.

MDS 650-05 A 4 Revision 081199 Printed 12/4/00

Integrated Circuit Systems • 525 Race Street • San Jose •CA•95126• [phone]tel • [phone]fax