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RJ706资料

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Ganged TX Turns Ratio Single n=ports (4,6,8) (Chip:Cable) RJ706 RJGn-706 1:1 10/100 Part Number Table1CT:1R3SCHEMATIC 7N7

D2LED1RJ-7RJ-8RXNRJ-6R4CMC2SHIELDD1R2T231RDNRDP2RCTSee TableSHIELDD4D3RJ-4RJ-5RXPRJ-3RJ-1TXPTXNRJ-2T1CMC1Note 2LED25TDPTCT4TDN678

1. R1-R4 = 75 Ohms, 1/16 W, 5%2. C1 is an optional 1000pF, 2KV de-coupling capacitor which is included with the -C suffix.Notes:2500EMI1EMI2R1General Features:-Single Port Through Hole-Multiport:1 x 4, 1 x 6, and 1 x 8-UL Recognized Component; File # E203973-Models to Support Most Popular Phy Chips-Meets IEEE 802.3 and ANSI X3.263 Requirements.-Includes integrated LEDs. LED signal leads are isolated from the Ethernet signal leads to reduce EMI and crosstalk.-Signal routing is designed for NIC applications. See datasheet RJ7XX-Schematic 7H7 for Hub signal routing.-Other signal routing is available. Please contact the factory at the numbers listed below.-Standard LEDs are green. For other LED options, see the RJ7XX & RJGn-7XX - LED Options Datasheet.10/100 Magnetics, TH Single & Multi-Port RJ45 PackagesRJ706 & RJGn-706 (RJ7xx & RJGn-7xx-Schematic 7N7), Rev. B 04 Oct 00(󰀿xx󰁀 equals one of the circuit numbers in the table below the schematic and 󰀿n󰁀 equals the number of ports-4, 6, or 8)Other circuit schematics are available. Call us at (800) 511-7308 or visit our web site atwww.trans-power.com.

Mechanical CrossReference Chart1 Port, THRJ7xx1 x 4RJG4-7xx1 x 6RJG6-7xx1 x 8RJG8-7xxForm FactorMechanical Datasheet #80.1 MHz - 100.0 MHz 1.1 12.0 38.0 42.0 33.060.1 MHz - 80.0 MHz 1.1 15.0 38.0 42.0 33.015.1 MHz - 60.0 MHz 0.6 18.0 43.0 46.0 35.01.0 MHz - 15.0 MHz 0.3 18.0 43.0 46.0 35.0.100 MHz - .999 MHz 1.0 18.0 43.0 46.0 35.0(dB MIN)10/100 ETHERNET ELECTRICAL CHARACTERISTICS @ 25°CAttenuationCrosstalk* Indicated Insertion Loss refers to magnetic circuitry only. FrequencyInsertion Loss(dB MAX) *Return Loss(dB MIN)Inductance:Dielectric Isolation:LED Forward Current:Rise time (10 - 90%):350uH Min with 8mA DC Bias, 0°C - 70°CCircuits without the 1000pF capacitor is 1500 Vrms minimum5 mA typical @ 3.3 VDC2.5 nSec typicalRX CMRR(dB MIN)TX CMRR(dB MIN)1800Circuits with the 1000pF capacitor is 2250 VDC minimum

Transpower Technologies, Inc., Park Center West Building, 9805 Double R Blvd., Suite #100, Reno, NV 89511 (775) 852-0140 (800) 511-7308 FAX: (775) 852-0145

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液晶常用电源管理芯片

液晶常用电源管理芯片

液晶常⽤电源管理芯⽚

1200AP40 1200AP60、1203P60

200D6、203D6 DAP8A 可互代

203D6/1203P6 DAP8A

2S0680 2S0880

3S0680 3S0880

5S0765 DP104、DP704

8S0765C DP704加24V得稳压⼆极管

ACT4060 ZA3020LV/MP1410/MP9141

ACT4065 ZA3020/MP1580

ACT4070 ZA3030/MP1583/MP1591MP1593/MP1430

ACT6311 LT1937

ACT6906 LTC3406/A T1366/MP2104

AMC2576 LM2576

AMC2596 LM2596

AMC3100 LTC3406/AT1366/MP2104

AMC34063A AMC34063

AMC7660 AJC1564

AP8012 VIPer12A

AP8022 VIPer22A

DAP02 可⽤SG5841 /SG6841代换

DAP02ALSZ SG6841

DAP02ALSZ SG6841

DAP7A、DP8A 203D6、1203P6

DH321、DL321 Q100、DM0265R

DM0465R DM/CM0565R

DM0465R/DM0565R ⽤cm0565r代换(取掉4脚得稳压⼆极管) DP104 5S0765

DP704 5S0765

DP706 5S0765

DP804 DP904

FAN7601 LAF0001

LD7552 可⽤SG6841代(改4脚电阻)

LD7575PS 203D6改1脚100K电阻为24K

OB2268CP OB2269CP

OB2268CP SG6841改4脚100K电阻为2047KOCP1451 TL1451/BA9741/SP9741/AP200

OCP2150 LTC3406/AT1366/MP2104

OCP2160 LTC3407

OCP2576 LM2576

OCP3601 MB3800

MIC706R资料

MIC706R资料

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The MIC706P/R/S/Tand MIC708R/S/Tare inexpensivemicroprocessor supervisory circuits that monitor powersupplies in 3.0 and 3.3 Volt microprocessor basedsystems. The circuit functions include a watchdog timer,microprocessor reset, power failure warning and adebounced manual reset input.The MIC706 offers a watchdog timer function, while theMIC708 has no watchdog timer but has an active highreset output in addition to the active low reset output.The R, S, and Tversions are similar in all respectsexcept for supply voltage reset threshold levels. Thethreshold levels are 2.63, 2.93, and 3.08V respectively.When the supply voltage drops below the resetthreshold level, RESET(and RESETfor the MIC708) isasserted.The MIC706Pis identical to the MIC706R, except thatthe Reset output is asserted high.1234VCCGNDPFI8765WDORESETWDIMIC706MRPFO1234VCCGNDPFI8765RESETRESETNCPFOMIC708MR(RESETforMIC706P)Top View

多功能微处理器监控电路SGM706数据手册免费下载

多功能微处理器监控电路SGM706数据手册免费下载

SGM706

Low-Cost, Microprocessor

Supervisory Circuit

GENERAL DESCRIPTION

The SGM706 microprocessor supervisory circuit reduces

the complexity and number of components required to monitor power-supply and monitor microprocessor activity. It significantly improves system reliability and

accuracy compared to separate ICs or discrete

components.

The SGM706 provides power-supply monitoring circuitry

that generates a reset output during power-up,

power-down and brownout conditions. The reset output

remains operational with VCC as low as 1V. Independent

watchdog monitoring circuitry is also provided. This is

activated if the watchdog input has not been toggled

within 1.6 seconds.

In addition, there is a 1.25V threshold detector for

power-fail warning, low-battery detection, or monitoring

an additional power supply. An active-low manual-reset

DIY高精度数字万用表

DIY高精度数字万用表

DIY高精度数字万用表

概述：

数字多用表是常用的测量仪器，目前市场常见的是3.5（三位半）和4.5 手持表，用于一般测量，另外高端的则是6.5位以上的台式表，价格较高，用于高精度测量。

随着电子技术的进步，高性能低成本的器件层出不穷，使得制作一部低档的6.5位数字多用表成为了可能，这里介绍这款六位版，就是在性能上、功能上和成本上综合考虑的一种设计实现方案。

设计思想：

选用成品的通用元件：高端DMM采用以 恒温深埋齐纳基准——前端为Dual

JFET的混合低噪声运算放大器——多斜率积分高速高分辨率ADC 为主轴的测量系统，其中每个部分的制作难度都非常高，而且需要昂贵的仪器进行调试、校准，这样的要求在业余条件下是难以满足的，所以这里采用了相对低成本 可靠通用IC 精密带隙基准——单片低噪声斩波稳零放大器——24Bits低噪声ΣΔ ADC来替代，这样的既可以减少元件采购难度，降低整体成本，最重要的是能得到可靠的性能保证，就是说可以根据DataSheet上标明的最差指标可以计 算出系统的整体性能。

放弃高电压，大电流量程：首先对这些量程进行高精度测量本身难度就非常高，而且对系统的输入选择、保护系统提出了很高的要求，元件质量要求高，PCB面积占用大，最重要的是要为用户人身安全负责，为了避免出现安全问题所以没有设置危险的测量量程。

放弃长期稳定性：要靠数字多用表本身来保证长期稳定性意味着整个系统每个部分都要有很高的长期稳定性，基准要用深埋齐纳基准，分压电阻要用精密电阻网 络等等，成本会显著提高，相对而言购买或制作标定好的基准（LYMEX有售）要便宜的多，而且在进行对比测量时可以将整体的精度提高到接近外部基准的水平。

放弃交流测量：由于没有设计交流测量系统的条件，所以没有做。

采用手持设备架构：由于现代MCU的集成度非常高，开发工具越来越简便，加之笔者最近在学习STM32，所以就做成手持设备了。