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ICS670-01 반도체 회로 부품 판매점

Low Phase Noise Zero Delay Buffer and Multiplier



Integrated Circuit Systems 로고
Integrated Circuit Systems
ICS670-01 데이터시트, 핀배열, 회로
ICS670-01
Low Phase Noise Zero Delay Buffer and Multiplier
Description
Features
The ICS670-01 is a high speed, low phase noise
Zero Delay Buffer (ZDB) which integrates ICS’
proprietary analog/digital Phase Locked Loop
(PLL) techniques. Part of ICS’ ClockBlocks
family, the 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
www.oDnattahSheeceht4ipU..coTmhe FBCLK should be used to
connect to the FBIN. Each output has its own
output enable pin.
The chip 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 ICS670-01 can eliminate
the delay through other devices. The 15 different
on-chip multipliers work in a variety of
applications. For other multipliers, including
fractional multipliers, see the ICS527.
• Packaged in 16 pin SOIC
• Clock inputs from 5 to 160 MHz (see page 2)
• Patented PLL with the lowest phase noise
• Output clocks up to 160 MHz at 3.3 V
• 15 selectable on-chip multipliers
• Power down mode available
• Low phase noise: -124 dBc/Hz at 10 kHz
• Output Enable function tri-states outputs
• Low jitter 15 ps one sigma
• Full swing CMOS outputs with 25 mA drive
capability at TTL levels
• Advanced, low power, sub-micron CMOS process
• Industrial temperature version available
• 3.3 V or 5 V operation
Block Diagram
ICLK
FBIN
S3:S0
Phase
Detector,
Charge
Pump, and
Loop Filter
Voltage
Controlled
Oscillator
4
ROM-
Based
Multipliers
OE1
Output
Buffer
Output
Buffer
External feedback from FBCLK is recommended.
OE2
FBCLK
CLK2
MDS 670-01 B
1
Revision 100900
Printed 11/15/00
Integrated Circuit Systems • 525 Race Street • San Jose •CA•95126•(408) 295-9800tel•http://www.icst.com


ICS670-01 데이터시트, 핀배열, 회로
ICS670-01
Low Phase Noise Zero Delay Buffer and Multiplier
Pin Assignment
VDD 1
VDD 2
VDD 3
CLK2 4
OE2 5
FBCLK 6
www.DataOShEe1et4U7.com
FBIN 8
16
15
14
13
12
11
10
9
ICS670-01
GND
GND
GND
S0
S1
S2
S3
ICLK
Pin Descriptions
Multiplier Select Table
S3 S2 S1 S0
CLK2 (and FBCLK)
0 0 0 0 Low (Power down entire chip)
0001
Input x1.333
0010
Input x6
0011
Input x1.5
0100
Input x3.333
0101
Input x2.50
0110
Input x4
0111
Input x1
1000
Input x2.333
1001
Input x2.666
1010
Input x12
1011
Input x3
1100
Input x10
1101
Input x5
1110
Input x8
1111
Input x2
0=connect directly to ground
1=connect directl to VDD
Input Range (MHz)
-
18 - 120
5 - 26.67
16.67 - 107
7.5 - 48
10 - 64
6 - 40
25 - 160
11 - 69
10 - 60
5 - 13.33
8 - 53.33
5 - 16
6 - 32
5 - 20
12 - 80
Number
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
Name
VDD
VDD
VDD
CLK2
OE2
FBCLK
OE1
FBIN
ICLK
S3
S2
S1
S0
GND
GND
GND
Type
P
P
P
O
I
O
I
CI
CI
I
I
I
I
P
P
P
Description
Connect to +3.3V or +5V. Must match other VDDs.
Connect to +3.3V or +5V. Must match other VDDs.
Connect to +3.3V or +5V. Must match other VDDs.
Clock output from VCO. Output frequency equals the input frequency times multiplier.
Output clock enable 2. Tri-states the clock 2 output when low.
Clock ouput from VCO. Output frequency equals the input frequency times multiplier.
Output clock enable 1. Tri-states the feedback clock output when low.
Feedback clock input.
Clock input. Connect to a 5 - 160 MHz clock.
Multiplier select pin 3. Determines outputs per table above. Internal pull-up.
Multiplier select pin 2. Determines outputs per table above. Internal pull-up.
Multiplier select pin 1. Determines outputs per table above. Internal pull-up.
Multiplier select pin 0. Determines outputs per table above. Internal pull-up.
Connect to ground.
Connect to ground.
Connect to ground.
Key: I = Input with internal pull-up resistor; O = output; P = power supply connection; CI = clock input.
MDS 670-01 B
2
Revision 100900
Printed 11/15/00
Integrated Circuit Systems • 525 Race Street • San Jose •CA•95126•(408) 295-9800tel•http://www.icst.com




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