nb2669a ON Semiconductor, nb2669a Datasheet - Page 2

• Manufacturer Part Number: nb2669a
• Description: Low Power, Reduced Emi Clock Synthesizer
• Manufacturer: ON Semiconductor

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