ICS307G-03LFT IDT, Integrated Device Technology Inc, ICS307G-03LFT Datasheet

IC CLOCK SOURCE PROGR 16-TSSOP

ICS307G-03LFT

Manufacturer Part Number
ICS307G-03LFT
Description
IC CLOCK SOURCE PROGR 16-TSSOP
Manufacturer
IDT, Integrated Device Technology Inc
Type
Clock Generatorr
Datasheet

Specifications of ICS307G-03LFT

Pll
Yes
Input
Clock, Crystal
Output
LVCMOS
Number Of Circuits
1
Ratio - Input:output
2:3
Differential - Input:output
No/No
Frequency - Max
270MHz
Divider/multiplier
Yes/No
Voltage - Supply
3 V ~ 3.6 V
Operating Temperature
0°C ~ 70°C
Mounting Type
Surface Mount
Package / Case
16-TSSOP
Frequency-max
270MHz
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
Other names
307G-03LFT
800-1796-2
SERIALLY PROGRAMMABLE CLOCK SOURCE
Description
The ICS307-03 is a dynamic, serially programmable clock
source which is flexible and takes up minimal board space.
Output frequencies are programmed via a 3-wire SPI port.
An advanced PLL coupled to an array of configurable
output dividers and three outputs allows low-jitter
generation of frequencies from 200 Hz to 270 MHz.
The device can be reprogrammed during operation, making
it ideal for applications where many different frequencies
are required, or where the output frequency must be
determined at run time. Glitch-free frequency transitions,
where the clock period changes slightly over many cycles,
are possible.
Block Diagram
IDT® SERIALLY PROGRAMMABLE CLOCK SOURCE
X1
X2
SCLK
DIN
CS
[Bit 122]
Programming
(132 bits)
Register
(Table 1)
REF Divide
1-2055
(Table 2)
Charge Pump
CP
(Table 3)
VCO DIVIDE
12-2055
11pF
1
Features
(Table 4)
Resistor
Crystal or clock reference input
3.3 V CMOS outputs
Three outputs can be individually configured or shut off
Small 16-pin TSSOP package – Pb-free, RoHS
compliant
Reprogrammable during operation
3-wire SPI serial interface
Glitch-free output frequency switching
User selectable charge pump current and damping
resistor
Power-down control via hardware pin or software control
bit
Programming word can be generated by IDT VersaClock
II Software
Directly programmable via VersaClock II Software and a
Windows PC parallel port
Industrial temperature range available
300
pF
(Table 5)
[Bit 123]
[Bit 124]
Divider
2 - 8232
1
0
1
0
(Table 7)
(Table 6)
Divider
2 - 34
Divider
2 - 34
ICS307-03
[Bit 110]
[Bit 111]
[Bit 129]
DATASHEET
ICS307-03
CLK1
CLK2
CLK3
REV L 032911

Related parts for ICS307G-03LFT

ICS307G-03LFT Summary of contents

Page 1

SERIALLY PROGRAMMABLE CLOCK SOURCE Description The ICS307- dynamic, serially programmable clock source which is flexible and takes up minimal board space. Output frequencies are programmed via a 3-wire SPI port. An advanced PLL coupled to an array of ...

Page 2

ICS307-03 SERIALLY PROGRAMMABLE CLOCK SOURCE Pin Assignment X1 1 VDD 2 VDD 3 VDD 4 GND 5 GND 6 GND 7 CLK1 8 16-pin TSSOP Pin Descriptions Pin Pin Number Name Type VDD Power 3 VDD Power ...

Page 3

ICS307-03 SERIALLY PROGRAMMABLE CLOCK SOURCE Table 1. Input Divider Divide Value ...

Page 4

ICS307-03 SERIALLY PROGRAMMABLE CLOCK SOURCE Table 3. Charge Pump Current (I Charge Pump Current ( A) 93 1.25 1 2.5 1 2.5 1 3. 6.25 0 7.5 0 7.5 1 7.5 ...

Page 5

ICS307-03 SERIALLY PROGRAMMABLE CLOCK SOURCE Table 5. Output Divider for Output 1 Divide Value 109 108 107 106 105 104 103 ...

Page 6

ICS307-03 SERIALLY PROGRAMMABLE CLOCK SOURCE Table 6. Output Divider for Output 2 Divide Value 117 ...

Page 7

ICS307-03 SERIALLY PROGRAMMABLE CLOCK SOURCE Table 8. Miscellaneous Control Bits Bit Function 24~88 Reserved—set to 0 110 OE1—set enable CLK1 111 OE2—set enable CLK2 112 1 = Normal Operation power down feedback ...

Page 8

ICS307-03 SERIALLY PROGRAMMABLE CLOCK SOURCE Determining and Controlling the Output Frequency with VersaClock The ICS307-03 is directly supported by the IDT provided software called VersaClock II. Complete programming words for this device can be calculated on any Windows PC by ...

Page 9

ICS307-03 SERIALLY PROGRAMMABLE CLOCK SOURCE Setting the PLL Loop Response The PLL loop response is determined both by fixed device characteristics and by other characterizes set by the user. This includes the values of R and C S Components figure ...

Page 10

ICS307-03 SERIALLY PROGRAMMABLE CLOCK SOURCE Programming Interface The dynamic register within the ICS307-03 controls the entire device and may be reprogrammed any time after power is properly applied values are changed, the frequency will transition smoothly ...

Page 11

ICS307-03 SERIALLY PROGRAMMABLE CLOCK SOURCE Absolute Maximum Ratings Stresses above the ratings listed below can cause permanent damage to the ICS307-03. These ratings, which are standard values for IDT commercially rated parts, are stress ratings only. Functional operation of the ...

Page 12

ICS307-03 SERIALLY PROGRAMMABLE CLOCK SOURCE AC Electrical Characteristics VDD = 3.3 V ±0.3 V, Ambient Temperature 0 to +70 C, unless stated otherwise Parameter Input Frequency Clock Output Frequency Output Clock Rise/Fall Time Output Clock Duty Cycle Frequency Transition time ...

Page 13

ICS307-03 SERIALLY PROGRAMMABLE CLOCK SOURCE Package Outline and Package Dimensions Package dimensions are kept current with JEDEC Publication No Ordering Information Part / Order Number Marking 307G-03LF ...

Page 14

ICS307-03 SERIALLY PROGRAMMABLE CLOCK SOURCE Innovate with IDT and accelerate your future networks. Contact: www.IDT.com For Sales 800-345-7015 408-284-8200 Fax: 408-284-2775 Corporate Headquarters Integrated Device Technology, Inc. www.idt.com © 2011 Integrated Device Technology, Inc. All rights reserved. Product specifications subject ...

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