您的位置：電子發(fā)燒友網 > 電子技術應用 > 行業(yè)新聞 > 新品快訊 >

DS1873 具有模擬LDD接口的SFP+控制器

2009-11-20 18:15本站整理佚名我要評論（0）我要收藏

DS1873 具有模擬LDD接口的SFP+控制器

概述

The DS1873 controls and monitors all functions for SFF, SFP, and SFP+ modules including all SFF-8472 functionality. The DS1873 provides APC loop, modulation current control, and eye safety functionality. The DS1873 continuously monitors for high output current, high bias current, and low and high transmit power to ensure that laser shutdown for eye safety requirements are met without adding external components.

Six ADC channels monitor V_CC, temperature, and four external monitor inputs (MON1–MON4) that can be used to meet all monitoring requirements. MON3 is differential with support for common mode to V_CC. Two digital-to-analog (DAC) outputs with temperature-indexed lookup tables (LUTs) are available for additional monitoring and control functionality.

關鍵特性

Meets All SFF-8472 Control and Monitoring Requirements

Six Analog Monitor Channels: Temperature, V_CC, MON1–MON4

MON1–MON4 Support Internal and External Calibration
Scalable Dynamic Range
Internal Direct-to-Digital Temperature Sensor
Alarm and Warning Flags for All Monitored Channels

Four 10-Bit Delta-Sigma Outputs with 36 Entry Temperature LUTs

Laser Bias Controlled by APC Loop and Temperature LUT to Compensate for Tracking Error
Laser Modulation Controlled by 72-Entry Temperature LUT
Two Additional DACs Controlled by One 72-Entry and One 36-Entry Temperature LUT

Digital I/O Pins: Five Inputs, Five Outputs

Comprehensive Fault-Measurement System with Maskable Laser Shutdown Capability

Flexible, Two-Level Password Scheme Provides Three Levels of Security

120 Bytes of Password-1 Protected Memory

128 Bytes of Password-2 Protected Memory in Main Device Address

256 Additional Bytes Located at A0h Slave Address

I²C-Compatible Interface

+2.85V to +3.9V Operating Voltage Range

28-Pin TQFN (5mm x 5mm) Package

應用/使用

SFF、SFP和SPF+收發(fā)模塊

DS1873：典型工作電路
典型工作電路

發(fā)表評論，輕松獲取積分：

發(fā)表評論表單

評價[必選]：

中立好評差評

用戶名: 驗證碼:

匿名?

請自覺遵守互聯(lián)網相關的政策法規(guī)，嚴禁發(fā)布色情、暴力、反動的言論。

日B视频亚洲,啪啪啪网站一区二区,91色情精品久久,日日噜狠狠色综合久,超碰人妻少妇97在线,999青青视频,亚洲一区二卡,让本一区二区视频,日韩网站推荐

DS1873 具有模擬LDD接口的SFP+控制器

相關閱讀：

發(fā)表評論，輕松獲取積分：

評價[必選]：

最新評論

深度閱讀

相關下載

電子技術文章排行

本類排行

總排行

熱門詞

日B视频 亚洲,啪啪啪网站一区二区,91色情精品久久,日日噜狠狠色综合久,超碰人妻少妇97在线,999青青视频,亚洲一区二卡,让本一区二区视频,日韩网站推荐

DS1873 具有模擬LDD接口的SFP+控制器

相關閱讀：

發(fā)表評論，輕松獲取積分：

評價[必選]：

最新評論

深度閱讀

相關下載

電子技術文章排行

本類排行

總排行

熱門詞

日B视频亚洲,啪啪啪网站一区二区,91色情精品久久,日日噜狠狠色综合久,超碰人妻少妇97在线,999青青视频,亚洲一区二卡,让本一区二区视频,日韩网站推荐

發(fā)表評論，輕松獲取積分：