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參數(shù)資料

Functional Description Receiver Section

Design

The receiver section contains an InGaAs PIN photodiode mounted together with a

transimpedance preamplifier IC in the OSA, coupled to a postamp/decision circuit on

a separate circuit board. The postamplifier is AC coupled to the preamplifier as

illustrated in Figure 1. The coupling capacitor is large enough to pass the

SONET/SDH test pattern at 622MBd without significant distortion or performance

penalty. If a lower signal rate is used, sensitivity, jitter and pulse distortion could be

degraded.

Noise Immunity

The receiver includes internal circuit components to filter power supply noise. Under

some conditions of EMI and power supply noise, external power supply filtering may

be necessary. If receiver sensitivity is degraded by power supply noise, the filter

network illustrated in Figure 2 may be used to improve performance. The values of the

filter components are general recommendations and may be changed to suit a

particular system environment. Shielded inductors are recommended.

The Signal Detect Circuit

The signal detect circuit works by sensing the peak level of the received signal and

comparing this level to a reference.

Figure 1 Receiver Block Diagram

TIA

PECL

Buffer

Limiting

Amplifier

Data+

Data-

Level

Detector

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TR134A	制造商:Dantona Industries 功能描述:BATTERY, ALKALINE, INDUSTRIAL PHOTO REPLACEMENT BATTERY, 6V, 650MAH 制造商:Dantona Industries 功能描述:ALKALINE BATTERY, 6V, Battery Size Code:-, Battery Capacity:600mAh, Battery Voltage:6V, Battery Technology:Alkaline, Battery Terminals:Pressure Contact, External Diameter:17.1mm, External Height:66.5mm, Battery IEC Code:4MR50 , RoHS Compliant: NA
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