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NB2669A Datasheet(PDF) 2 Page - ON Semiconductor

Part No. NB2669A
Description  Low Power, Reduced EMI Clock Synthesizer
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Maker  ONSEMI [ON Semiconductor]
Homepage  http://www.onsemi.com
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NB2669A Datasheet(HTML) 2 Page - ON Semiconductor

   
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NB2669A
http://onsemi.com
2
Figure 1. Block Diagram
ModOUT
Frequency
Divider
Feedback
Divider
Phase
Detector
Loop
Filter
CLKIN
Modulation
VDD
VCO
Output
Divider
PLL
VSS
PD
Table 1. KEY SPECIFICATIONS
Description
Specification
Supply Voltages
VDD = 3.3 V / 2.5 V
Frequency Range
For 2.5 V Supply
For 3.3 V Supply
6 MHz < CLKIN < 12 MHz
6 MHz < CLKIN < 13 MHz
Cycle−to−Cycle Jitter
200 ps (maximum)
Output Duty Cycle
45/55% (worst case)
Modulation Rate Equation
FIN/256
Frequency Deviation
"1% @ 10 MHz
Figure 2. Pin Configuration
VDD
1
2
3
6
5
4
NC
CLKIN
ModOUT
NB2669A
VSS
PD
Table 2. PIN DESCRIPTION
Pin #
Pin Name
Type
Description
1
PD
I
Powerdown control pin. Pull low to enable Powerdown mode. Connect to VDD if not used.
2
NC
No connect.
3
CLKIN
I
External reference frequency input.
4
VDD
P
Power supply for the entire chip.
5
ModOUT
O
Spread spectrum clock output.
6
VSS
P
Ground connection.


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