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ICS309

Features: • Packaged in 20-pin SSOP (QSOP)• Highly accurate frequency generation• M/N Multiplier PLL: M = 1..2048, N = 1..1024• Serially programmable: user determines the output frequency via a 3-wire interface • Spread Spectrum frequency modulation for reduced system...

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SeekIC No. : 004370761 Detail

ICS309: Features: • Packaged in 20-pin SSOP (QSOP)• Highly accurate frequency generation• M/N Multiplier PLL: M = 1..2048, N = 1..1024• Serially programmable: user determines the out...

ICS309 Data Sheet

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Part Number:
ICS309
Supply Ability:
5000

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  • Qty
  • 1~5000
  • Unit Price
  • Negotiable
  • Processing time
  • 15 Days
Total Cost: $ 0.00

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Product Details

Description



Features:

• Packaged in 20-pin SSOP (QSOP)
• Highly accurate frequency generation
• M/N Multiplier PLL: M = 1..2048, N = 1..1024
• Serially programmable: user determines the output frequency via a 3-wire interface
• Spread Spectrum frequency modulation for reduced system EMI
• Center or Down Spread up to 4% total
• Selectable 32 kHz and 120 kHz modulation
• Eliminates need for custom quartz oscillators
• Input crystal frequency of 5 - 27 MHz
• Input clock frequency of 3 - 50 MHz
• Output clock frequencies up to 200 MHz
• Operating voltage of 3.3 V
• Up to 9 reference clock outputs
• Power down tri-state mode
• Very low jitter


Pinout

Connection Diagram


Specifications

Parameter Conditions
Minimum
Typical
Maximum
Units
Supply Voltage, VDD Referenced to GND
7
V
Inputs Referenced to GND
-0.5
VDD+0.5
V
Clock Output Referenced to GND
-0.5
VDD+0.5
V
Soldering Temperature Max of 10 seconds
260
Storage temperature  
-65
150



Description

The ICS309 is a versatile serially-programmable, triple PLL with spread spectrum clock source. The ICS309 can generate any frequency from 250kHz to 200 MHz,and up to 6 different output frequencies simultaneously.The outputs can be reprogrammed on-the-fly, and will lock to a new frequency in 10 ms or less.

To reduce system EMI emissions, spread spectrum is available that supports modulation frequencies of 31 kHz and 120 kHz, as well as modulation amplitudes of +/-0.25% to +/-2.0%. Both center and down-spread options are available.

The ICS309 includes a PDTS pin which tri-states the output clocks and powers down the entire chip.

The ICS309 default for non-programmed start-up are buffered reference clock outputs on all clock output pins.

ICS' VersaClockTM programming software allows the user to configure up to 9 outputs with target frequencies, spread spectrum capabilities or buffered reference clock outputs. The VersaClockTM software automatically configures the PLLs for optimal overall performance.




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