ICS1493K-17LF IDT, Integrated Device Technology Inc, ICS1493K-17LF Datasheet

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ICS1493K-17LF

Manufacturer Part Number
ICS1493K-17LF
Description
IC CLOCK SYNTHESIZER 20-VFQFPN
Manufacturer
IDT, Integrated Device Technology Inc
Type
Clock/Frequency Synthesizer, Fanout Distribution, Spread Spectrum Clock Generatorr
Datasheet

Specifications of ICS1493K-17LF

Pll
Yes with Bypass
Input
Clock, Crystal
Output
Clock
Number Of Circuits
1
Ratio - Input:output
1:5
Differential - Input:output
No/No
Frequency - Max
48MHz
Divider/multiplier
No/No
Voltage - Supply
1.7 V ~ 2 V
Operating Temperature
-10°C ~ 80°C
Mounting Type
Surface Mount
Package / Case
20-QFN
Frequency-max
48MHz
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
Other names
1493K-17LF

Available stocks

Company
Part Number
Manufacturer
Quantity
Price
Part Number:
ICS1493K-17LF
Manufacturer:
IDT, Integrated Device Technology Inc
Quantity:
10 000
Part Number:
ICS1493K-17LFT
Manufacturer:
IDT, Integrated Device Technology Inc
Quantity:
10 000
CLOCK SYNTHESIZER FOR PORTABLE SYSTEMS
IDT™ / ICS™ CLOCK SYNTHESIZER FOR PORTABLE SYSTEMS
Description
The ICS1493-17 is a low-power, low-jitter clock
synthesizer designed to replace multiple crystals and
oscillators in portable audio/video systems. The device
generates a 37 MHz processor clock, a 48 MHz USB
clock, a fixed 22.5792 MHz audio clock, a selectable
24.576 MHz or 22.5792 MHz audio clock, and a 27MHz
reference clock for video. Using ICS’ proprietary mix of
analog and digital Phase-Locked Loop (PLL)
technology, the device spreads the frequency spectrum
of the 37 MHz output, reducing the peak amplitude of by
up to 16 dB. An output enable (OE) pin lowers the chip
power consumption while tri-stating all outputs.
Block Diagram
27 MHz
clock or
crystal input
SDATA
Optional tuning
capacitors
X2
X1
SCK
Oscillator/
Crystal
Buffer
Clock
Control
Logic
IIC
(Spread)
PLL1
PLL2
PLL3
PLL4
1
Features
VDD
GND
Extremely low operating current (11 mA)
Packaged in 20-pin QFN (Pb-free)
Input crystal or clock frequency of 27 MHz
Output reference frequency of 27 MHz
Fixed output frequencies of 37 MHz, 48 MHz and
22.5792 MHz
Selectable output frequency of either 22.5792 MHz
or 24.576 MHz
Configurable spread spectrum on 37 MHz output
Operating core voltage of 1.8 V
Output voltage of 1.8 V or 2.5 V
Advanced, low-power CMOS process
3
5
PRELIMINARY DATASHEET
VDDO
2
ICS1493-17
OE
ICS1493-17
37M
48M
22/24M
22M
27M
REV A 101005

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ICS1493K-17LF Summary of contents

Page 1

CLOCK SYNTHESIZER FOR PORTABLE SYSTEMS Description The ICS1493- low-power, low-jitter clock synthesizer designed to replace multiple crystals and oscillators in portable audio/video systems. The device generates a 37 MHz processor clock MHz USB clock, a fixed ...

Page 2

ICS1493-17 CLOCK SYNTHESIZER FOR PORTABLE SYSTEMS Pin Assignment GND 1 48M VDDO OE VDD 6 20-pin QFN Pin Descriptions Pin Pin Number Name 1 GND 2 48M 3 VDDO VDD 6 22M 7 GND 8 SCK 9 ...

Page 3

ICS1493-17 CLOCK SYNTHESIZER FOR PORTABLE SYSTEMS Pin Pin Number Name 18 VDD External Components Decoupling Capacitor As with any high-performance mixed-signal IC, the ICS1493-17 must be isolated from system power supply noise to perform optimally. ...

Page 4

ICS1493-17 CLOCK SYNTHESIZER FOR PORTABLE SYSTEMS Absolute Maximum Ratings Stresses above the ratings listed below can cause permanent damage to the ICS1493-17. These ratings, which are standard values for ICS commercially rated parts, are stress ratings only. Functional operation of ...

Page 5

ICS1493-17 CLOCK SYNTHESIZER FOR PORTABLE SYSTEMS Parameter Internal Pull-down Resistor Internal Pull-up Resistor AC Electrical Characteristics Unless stated otherwise, VDDO = 2.5 V ±5%, Ambient Temperature -10°C to +80°C Parameter Input Frequency Output Rise Time Output Fall Time Output Impedance ...

Page 6

ICS1493-17 CLOCK SYNTHESIZER FOR PORTABLE SYSTEMS AC Electrical Characteristics Unless stated otherwise, VDDO = 1.8 V ±0.1 V, Ambient Temperature -10°C to +80°C Parameter Input Frequency Output Rise Time Output Fall Time Output Impedance Output Clock Duty Cycle Absolute Clock ...

Page 7

ICS1493-17 CLOCK SYNTHESIZER FOR PORTABLE SYSTEMS Serial Data Interface Data Protocol The clock driver serial protocol accepts byte write, byte read, block write, and block read operations from the controller. For block write/read operation, the bytes must be accessed in ...

Page 8

ICS1493-17 CLOCK SYNTHESIZER FOR PORTABLE SYSTEMS . Byte Write Protocol Bit Description 1 Start 2:8 Slave address - 7 bits 9 Write = 0 10 Acknowledge from slave 11:18 Command code — 8 bit ‘10000000’ stands for byte operation, bits[1:0] ...

Page 9

ICS1493-17 CLOCK SYNTHESIZER FOR PORTABLE SYSTEMS Byte 1: Control Register Bit @Pup Byte 2: Control Register Bit @Pup ...

Page 10

ICS1493-17 CLOCK SYNTHESIZER FOR PORTABLE SYSTEMS Thermal Characteristics Parameter Thermal Resistance Junction to Ambient Marking Diagram 1 93K17L ###### YYWW 6 Notes: 1. ###### is the lot code. 2. YYWW is the last two digits of the year and the ...

Page 11

... Part / Order Number ICS1493K-17LF ICS1493K-17LFT Parts that are ordered with a “LF” suffix to the part number are the Pb-Free configuration and are RoHS compliant. While the information presented herein has been checked for both accuracy and reliability, Integrated Circuit Systems (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 ...

Page 12

ICS1493-17 CLOCK SYNTHESIZER FOR PORTABLE SYSTEMS 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. 6024 Silver Creek Valley Road San Jose, CA 95138 United States 800 ...

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