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ICS670-04 Datasheet

LOW PHASE NOISE ZERO DELAY BUFFER AND MULTIPLIER

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LOW PHASE NOISE ZERO DELAY BUFFER AND MULTIPLIER
DATASHEET
ICS670-04
Description
The ICS670-04 is a high speed, low phase noise, Zero
Delay Buffer (ZDB) which integrates IDT’s proprietary
analog/digital Phase Locked Loop (PLL) techniques. It is
identical to the ICS670-02, but with an increased maximum
output frequency of 210 MHz. 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 ICS670-04 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
Clock inputs from 5 to 210 MHz (see page 2)
Patented PLL with low phase noise
Output clocks up to 210 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 grade
Block Diagram
ICLK
FBIN
Divide by
N
VDD
3
Phase
Detector,
Charge
Pump, and
Loop Filter
OE1
Voltage
Controlled
Oscillator
S3:S0
4
3
GND
External Feedback from FBCLK is recommended.
OE2
FBCLK
CLK2
IDT™ / ICS™ LOW PHASE NOISE ZERO DELAY BUFFER AND MULTIPLIER 1
ICS670-04 REV E 051310


Integrated Device Technology Electronic Components Datasheet

ICS670-04 Datasheet

LOW PHASE NOISE ZERO DELAY BUFFER AND MULTIPLIER

No Preview Available !

ICS670-04
LOW PHASE NOISE ZERO DELAY BUFFER AND MULTIPLIER
ZDB AND MULTIPLIER
Pin Assignment
VDD
VDD
VDD
CLK2
OE2
FBCLK
OE1
FBIN
1
2
3
4
5
6
7
8
16 GND
15 GND
14 GND
13 S0
12 S1
11 S2
10 S3
9 ICLK
Multiplier Select Table
S3 S2 S1 S0 CLK2 (and FBCLK) Input Range (MHz)
0 0 0 0 Low (Power down
entire chip)
0001
Input x1.333
18 - 157.5
0010
Input x6
5 - 35
0011
Input x1.5
16.67 - 140
0100
Input x3.333
7.5 - 63
0101
Input x2.50
10 - 84
0110
Input x4
6 - 52.5
0111
Input x1
25 - 210
1000
Input x2.333
11 - 90
1001
Input x2.666
10 - 78.75
1010
Input x12
5 - 17.5
1011
Input x3
8 - 70
1100
Input x10
5 - 21
1101
Input x5
6 - 42
1110
Input x8
5 - 26.25
1111
Input x2
12 - 105
Pin Descriptions
Pin
Number
1-3
4
5
6
7
8
9
10
11
12
13
14 - 16
Pin
Name
VDD
CLK2
OE2
FBCLK
OE1
FBIN
ICLK
S3
S2
S1
S0
GND
Pin
Type
Pin Description
Input Power supply. Connect both pins to the same voltage (either 3.3 V or 5 V).
Output Clock output from VCO. Output frequency equals the input frequency times
multiplier.
Input Output clock enable 2. Tri-states the clock 2 output when low.
Output Clock output from VCO. Output frequency equals the input frequency times
multiplier.
Input Output clock enable 1. Tri-states the feedback clock output when low.
Input Feedback clock input.
Input Clock input. Connect to a 5 - 210 MHz clock.
Input Multiplier select pin 3. Determines outputs per table above. Internal pull-up.
Input Multiplier select pin 2. Determines outputs per table above. Internal pull-up.
Input Multiplier select pin 1. Determines outputs per table above. Internal pull-up.
Input Multiplier select pin 0. Determines outputs per table above. Internal pull-up.
Power Connect to ground.
IDT™ / ICS™ LOW PHASE NOISE ZERO DELAY BUFFER AND MULTIPLIER 2
ICS670-04
REV E 051310


Part Number ICS670-04
Description LOW PHASE NOISE ZERO DELAY BUFFER AND MULTIPLIER
Maker IDT
Total Page 7 Pages
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