MT9041 Zarlink Semiconductor, MT9041 Datasheet - Page 11

• Manufacturer Part Number: MT9041
• Description: Single Reference Frequency Selectable Digital PLL With Multiple Clock Outputs For T1/E1 Trunk And Backplane Synchronization
• Manufacturer: Zarlink Semiconductor

MT9041B
Data Sheet
Reset Circuit
A simple power up reset circuit with about a 50us reset low time is shown in Figure 7. Resistor R
is for protection
P
only and limits current into the RST pin during power down conditions. The reset low time is not critical but should
be greater than 300ns.
MT9041B
+5V
R
10kΩ
RST
R
P
1kΩ
C
10nF
Figure 7 - Power-Up Reset Circuit
Power Supply Decoupling
The MT9041B has two VDD (+5V) pins and two VSS (GND) pins. Power and decoupling capacitors should be
included as shown in Figure 8.
C1
0.1uF
18
15
MT9041B
5
1
C2
0.1uF
Figure 8 - Power Supply Decoupling
11
Zarlink Semiconductor Inc.