SY89425 查看數據表（PDF） - Micrel

零件编号

产品描述 (功能)

生产厂家

SY89425

DUAL SONET OC-12 CLOCK SYNTHESIZER

Micrel 

Micrel

ClockWorks™

SY89425

JITTER GENERATION

Jitter Generation Definition

Bellcore TR-NWT-000499 (Issue 4), section 7.3.3 "Jitter

generation is the process whereby jitter appears at the output

port of an individual unit of digital equipment in the absence of

applied input jitter."

Jitter Generation Requirement

Bellcore TA-NWT-000253 (Issue 2), section 5.6.5.2 "For

Category II interfaces, jitter generation shall not exceed 0.01

UI rms. For OC-N and STSX-N interfaces, a high-pass

measurement filter with a 12kHz cutoff frequency shall be

used." The low-pass cutoff frequency of the measurement

filter shall be higher than 5MHz.

The characteristic of the measurement filter is shown

below.

SONET OC-12 Category II Jitter Generation Measurement

Filter Characteristics

UI (rms)

0.01

+20dB/decade

12kHz

Figure 1

Frequency

5MHz

(minimum)

PRODUCT ORDERING CODE

Ordering

Code

SY89425JC

SY89425JCTR

Package

Type

J28-1

J28-1

Operating

Range

Commercial

Commercial

6

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