mt9074ap1 Zarlink Semiconductor, mt9074ap1 Datasheet - Page 23

• Manufacturer Part Number: mt9074ap1
• Description: T1/e1/j1 Single Chip Transceiver With Wide Dynamic Range Liu
• Manufacturer: Zarlink Semiconductor

Alternatively, a crystal oscillator may be used. A complete oscillator circuit made up of a crystal, resistors and
capacitors is shown in Figure 10. The crystal specification is as follows.
Frequency:
Tolerance:
Oscillation Mode:
Resonance Mode:
Load Capacitance:
Maximum Series Resistance:
Approximate Drive Level:
-0.5
19.5
dB
0
10
Figure 11 - TR 62411 Jitter Attenuation Curve
Figure 10 - Crystal Oscillator Circuit
20 MHz
50 ppm
Fundamental
Parallel
32 pF
35 Ω
1 mW
OSC2
OSC1
Zarlink Semiconductor Inc.
1 MΩ
Frequency (Hz)
MT9074
Note: the 1 µH inductor is optional
23
40
56 pF
20 MHz
100 Ω
400
39 pF
-20 dB/decade
1 µH*
10K
Data Sheet