670MI-02LFT Datasheet 670MI-02LF, 670MI-02LFT, 670M-02LF | P1-P3

DATASHEET

LOW PHASE NOISE ZERO DELAY BUFFER AND MULTIPLIER ICS670-02

IDT™ / ICS™

LOW PHASE NOISE ZERO DELAY BUFFER AND MULTIPLIER 1

ICS670-02 REV J 051310

Description

The ICS670-02 is a high speed, low phase noise, Zero

Delay Buffer (ZDB) which integrates IDT’s proprietary

analog/digital Phase Locked Loop (PLL) techniques. Part of

IDT’s ClockBlocks

family, the part’s zero delay feature

means that the rising edge of the input clock aligns with the

rising edges of the outputs giving the appearance of no

delay through the device. There are two identical outputs on

the chip. The FBCLK should be used to connect to the

FBIN. Each output has its own output enable pin.

The ICS670-02 is ideal for synchronizing outputs in a large

variety of systems, from personal computers to data

communications to video. By allowing off-chip feedback

paths, the chip can eliminate the delay through other

devices. The 15 different on-chip multipliers work in a

variety of applications. For other multipliers, including

functional multipliers, see the ICS527.

Features

• Packaged in 16-pin SOIC

• Pb (lead) free package, RoHS compliant

• Clock inputs from 5 to 160 MHz (see page 2)

• Patented PLL with low phase noise

• Output clocks up to 160 MHz at 3.3 V

• 15 selectable on-chip multipliers

• Power down mode available

• Low phase noise: -111 dBc/Hz at 10 kHz

• Output enable function tri-states outputs

• Low jitter 15 ps one sigma

• Advanced, low power, sub-micron CMOS process

• Operating voltage of 3.3 V or 5 V

• Industrial temperature range available (-40 to +85°C)

Block Diagram

Divide by

Voltage

Controlled

Oscillator

FBCLK

OE1

Phase

Detector,

Charge

Pump, and

Loop Filter

FBIN

S3:S0

ICLK

CLK2

OE2

VDD

GND

External Feedback from FBCLK is recommended.

ICS670-02

LOW PHASE NOISE ZERO DELAY BUFFER AND MULTIPLIER ZDB AND MULTIPLIER

IDT™ / ICS™

LOW PHASE NOISE ZERO DELAY BUFFER AND MULTIPLIER 2

ICS670-02 REV J 051310

Pin Assignment Multiplier Select Table

Pin Descriptions

VDD

GND

CLK2

OE2

GND

FBCLK

OE1

ICLK

FBIN

GND

S3 S2 S1 S0 CLK2 (and FBCLK) Input Range (MHz)

0000 Low (Power down

entire chip)

0001 Input x1.333 18 - 120

0010 Input x6 5 - 26.67

0011 Input x1.5 16.67 - 107

0100 Input x3.333 7.5 - 48

0101 Input x2.50 10 - 64

0110 Input x4 6 - 40

0111 Input x1 25 - 160

1000 Input x2.333 11 - 69

1001 Input x2.666 10 - 60

1010 Input x12 5 - 13.33

1011 Input x3 8 - 53.33

1100 Input x10 5 - 16

1101 Input x5 6 - 32

1110 Input x8 5 - 20

1111 Input x2 12 - 80

Number

Name

Type

Pin Description

1 - 3 VDD Input Power supply. Connect both pins to the same voltage (either 3.3 V or 5 V).

4 CLK2 Output Clock output from VCO. Output frequency equals the input frequency times multiplier.

5 OE2 Input Output clock enable 2. Tri-states the clock 2 output when low.

6 FBCLK Output Clock output from VCO. Output frequency equals the input frequency times multiplier.

7 OE1 Input Output clock enable 1. Tri-states the feedback clock output when low.

8 FBIN Input Feedback clock input.

9 ICLK Input Clock input. Connect to a 5 - 160 MHz clock.

10 S3 Input Multiplier select pin 3. Determines outputs per table above. Internal pull-up.

11 S2 Input Multiplier select pin 2. Determines outputs per table above. Internal pull-up.

12 S1 Input Multiplier select pin 1. Determines outputs per table above. Internal pull-up.

13 S0 Input Multiplier select pin 0. Determines outputs per table above. Internal pull-up.

14 - 16 GND Power Connect to ground.

ICS670-02

LOW PHASE NOISE ZERO DELAY BUFFER AND MULTIPLIER ZDB AND MULTIPLIER

IDT™ / ICS™

LOW PHASE NOISE ZERO DELAY BUFFER AND MULTIPLIER 3

ICS670-02 REV J 051310

External Components

The ICS670-02 requires a minimum number of external components for proper operation. Decoupling capacitors of

0.01µF should be connected between VDD and GND on pins 4 and 5, and VDD and GND on pins 13 and 12, as

close to the device as possible. A series termination resistor of 33Ω may be used to each clock output pin to reduce

reflections.

Absolute Maximum Ratings

Stresses above the ratings listed below can cause permanent damage to the ICS670-02. These ratings, which are

standard values for IDT commercially rated parts, are stress ratings only. Functional operation of the device at these

or any other conditions above those indicated in the operational sections of the specifications is not implied.

Exposure to absolute maximum rating conditions for extended periods can affect product reliability. Electrical

parameters are guaranteed only over the recommended operating temperature range.

Recommended Operation Conditions

DC Electrical Characteristics

VDD=3.3 V ±10%, Ambient temperature -40 to +85° C, unless stated otherwise

Item Rating

Supply Voltage, VDD 7 V

All Inputs and Outputs -0.5 V to VDD+0.5 V

Ambient Operating Temperature 0 to +70° C

Storage Temperature -65 to +150° C

Junction Temperature 150° C

Soldering Temperature 260° C

Parameter Min. Typ. Max. Units

Ambient Operating Temperature 0 +70 ° C

Power Supply Voltage (measured in respect to GND) +3.0 +5.5 V

Parameter Symbol Conditions Min. Typ. Max. Units

Operating Voltage VDD 3.0 5.5 V

Input High Voltage V

Input Low Voltage V

0.8 V

Output High Voltage V

= -12 mA 2.4 V

Output Low Voltage V

= 12 mA 0.4 V

Output High Voltage,

CMOS level

= -4 mA VDD-0.4 V

Operating Supply Current IDD No Load 35 mA

P1-P3 P4-P6 P7-P7

670MI-02LFT

Mfr. #:

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Manufacturer:

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Description:

Clock Generators & Support Products LOW NOISE ZERO DELAY BUFFER / MULTIPLIER

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670MI-02LFT

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