- 您现在的位置：买卖IC网 > PDF目录10015 > MIC3001GML (Micrel Inc)IC FOM MANAGEMENT W/CALIBR 24MLF PDF资料下载
参数资料
| 型号： | MIC3001GML |
| 厂商： | Micrel Inc |
| 文件页数： | 18/76页 |
| 文件大小： | 0K |
| 描述： | IC FOM MANAGEMENT W/CALIBR 24MLF |
| 标准包装： | 75 |
| 类型： | 收发器 |
| 规程： | SDHj Sonet |
| 电源电压： | 3 V ~ 3.6 V |
| 安装类型： | 表面贴装 |
| 封装/外壳： | 24-VFQFN 裸露焊盘，24-MLF? |
| 供应商设备封装： | 24-MLF?（4x4） |
| 包装： | 管件 |
| 产品目录页面： | 1086 (CN2011-ZH PDF) |
| 其它名称： | 576-1753-5 MIC3001GML-ND |
第1页第2页第3页第4页第5页第6页第7页第8页第9页第10页第11页第12页第13页第14页第15页第16页第17页当前第18页第19页第20页第21页第22页第23页第24页第25页第26页第27页第28页第29页第30页第31页第32页第33页第34页第35页第36页第37页第38页第39页第40页第41页第42页第43页第44页第45页第46页第47页第48页第49页第50页第51页第52页第53页第54页第55页第56页第57页第58页第59页第60页第61页第62页第63页第64页第65页第66页第67页第68页第69页第70页第71页第72页第73页第74页第75页第76页
Micrel, Inc.
MIC3001
August 2004
25
M9999-082404-A
hbwhelp@micrel.com or (408) 955-1690
Figure 8. MIC3001 Power-On Timing (OE = 1)
Fault Comparators
In addition to detecting and reporting the events specified
in SFF-8472, the MIC3001 also monitors five fault
conditions: inadequate supply voltage, thermal diode
faults, excessive bias current, excessive transmit power,
and APC op-amp saturation. Comparators monitor these
parameters in order to respond quickly to fault conditions
that could indicate link failure or safety issues, see Figure
9. When a fault is detected, the laser is shut down and
TXFAULT is asserted. Each fault source may be
independently disabled using the FLTMSK register.
FLTMSK is non-volatile, allowing faults to be masked only
during calibration and testing or permanently.
Figure 9. Fault Comparator Logic
Thermal diode faults are detected within the temperature
measurement subsystem when an out-of-range signal is
detected. A window comparator circuit monitors the voltage
on the compensation capacitor to detect APC op-amp
saturation (Figure 10). Op-amp saturation indicates that
some fault has occurred in the control loop such as loss of
feedback. The saturation detector is blanked for a time,
tFLTTMR, following laser turn-on since the compensation
voltage will essentially be zero at turn-on. The FLTTMR
interval is programmable from 0.5ms to 127ms (typical) in
increments of 0.5ms (fFLTTMR). Note that a saturation
comparator cannot be relied upon to meet certain eye-
safety standards that require 100ms response times. This is
because the operation of a saturation detector is limited by
the loop bandwidth, i.e., the choice of CCOMP. Even if the
comparator itself was very fast, it would be subject to the
limited slew-rate of the APC op-amp. Only the other fault
comparator
channels
will
meet
<100ms
timing
requirements.
The MIC3001 can also except and respond to fault inputs
from external devices. See “SHDN and TXFIN” section.
A similar comparator circuit monitors received signal
strength and asserts RXLOS when loss-of-signal is
detected (Figure 11). RXLOS will be asserted when and if
VRX drops below the level programmed in LOSFLT.
Hysteresis is implemented such that RXLOS will be de-
asserted when VRX subsequently rises above the level
programmed in LOSFLTn. The loss-of-signal comparator
may be disabled completely by setting the LOSDIS bit in
OEMCFG3. Once the LOS comparator is disabled, an
external device may drive RXLOS. The state of the RXLOS
pin is reported in the CNTRL register regardless of whether
it is driven by the internal comparator or by an external
device.
A
programmable
digital-to-analog
converter
provides the comparator reference voltages for monitoring
received signal strength, transmit power, and bias current.
Glitches less than 10ms (typical) in length are rejected by
相关PDF资料 |
PDF描述 |
|---|---|
| VE-B34-MX-B1 | CONVERTER MOD DC/DC 48V 75W |
| LTC2871IFE#TRPBF | IC TXRX RS485/RS422 38-TSSOP |
| VE-24X-IU-F2 | CONVERTER MOD DC/DC 5.2V 200W |
| IDT72V3632L15PF8 | IC BIFIFO 512X36X2 15NS 120-TQFP |
| VE-B33-MX-B1 | CONVERTER MOD DC/DC 24V 75W |
相关代理商/技术参数 |
参数描述 |
|---|---|
| MIC3001GML TR | 功能描述:网络控制器与处理器 IC F/O Transceiver Mgt. IC with Internal Calibration RoHS:否 制造商:Micrel 产品:Controller Area Network (CAN) 收发器数量: 数据速率: 电源电流（最大值）:595 mA 最大工作温度:+ 85 C 安装风格:SMD/SMT 封装 / 箱体:PBGA-400 封装:Tray |
| MIC3001GMLTR | 制造商:MICREL 制造商全称:Micrel Semiconductor 功能描述:FOM Management IC with Internal Calibration |
| MIC3002 | 制造商:MICREL 制造商全称:Micrel Semiconductor 功能描述:FOM Management IC with Internal Calibr ation |
| MIC3002_10 | 制造商:MICREL 制造商全称:Micrel Semiconductor 功能描述:FOM Management IC with Internal Calibration |
| MIC-3002A | 制造商:ADVANTECH 制造商全称:Advantech Co., Ltd. 功能描述:4U CompactPCI Enclosure with 6-slot 3U Backplane |
发布紧急采购，3分钟左右您将得到回复。