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SM8761

Spread Spectrum Clock Generator

Nippon Precision Circuits  

SM8761 series

CLKOUT Output Spectrum Sample (SM8761AA)

A sample SM8761AA CLKOUT output spectrum is shown in Figure 6.

MKR:33.200MHz 9.37dBm

W:A

RL:10.0dBm 10dB/AT30dB ST 3s D:PK

CNF:33.2MHz SPF:3.3MHz

RB3kHz VB1kHz

(a) NPC test mode: SS OFF, fin = 33.2MHz

MKR:32.434MHz −5.19dBm

W:A

RL:10.0dBm 10dB/AT30dB ST 3s D:PK

CNF:33.2MHz SPF:3.3MHz

RB3kHz VB1kHz

(b) MSEL1 = "L"/ MSEL0 = “H”: down spread –2.8%, fin = 33.2MHz

Figure 6. Output spectrum sample

Note. The output spectrum sample in figure (a) is for NPC test mode with the SS function OFF.

Note. These spectrum diagrams were obtained using the NPC evaluation board. These spectrum diagrams are not guaranteed SM8761 series device

characteristics.

NIPPON PRECISION CIRCUITS INC.—10

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