ZL50010/GDC ZARLINK [Zarlink Semiconductor Inc], ZL50010/GDC Datasheet - Page 45

• Manufacturer Part Number: ZL50010/GDC
• Description: Flexible 512 Channel DX with Enhanced DPLL
• Manufacturer: ZARLINK [Zarlink Semiconductor Inc]

3.2
When an external clock oscillator is used, numerous parameters must be considered. This includes absolute
frequency, frequency change over temperature, output rise and fall times, output levels and duty cycle.
For applications requiring
FOX F7C-2E3-20.0 MHz
Frequency:
Tolerance:
Rise & Fall Time:
Duty Cycle:
The output clock should be connected directly (not AC coupled) to the XTALi input of the device, and the XTALo
output should be left open as shown in Figure 32.
External Clock Oscillator
10 ns (0.33V 2.97V 15 pF)
40% to 60%
20 MHz
25 ppm 0C to 70C
±
32 ppm clock accuracy, the following clock oscillator module may be used:
ZL50010
Figure 32 - External Clock Oscillator Circuit
XTALo
XTALi
Zarlink Semiconductor Inc.
No Connection
ZL50010
20 MHz OUT
45
+3.3 V
+3.3 V
GND
0.1 uF
Data Sheet