The EMC1438 is a high accuracy, low cost, System Management Bus (SMBus) temperature sensor. Advanced features such as Resistance Error Correction (REC), Beta Compensation (to CPU diodes requiring the BJT or transistor model) and automatic diode type detection combine to provide a robust solution for complex environmental monitoring applications.
Additionally, the EMC1438 provides a hardware programmable system shutdown feature that is programmed at part power-up via a single TRIP_SET voltage channel that cannot be masked or corrupted through the SMBus.
Each device provides ±1° accuracy for external diode temperatures and ±2°C accuracy for the internal diode temperature. The EMC1428 monitors up to eight temperature channels (up to seven external and one internal).
Features
Hardware Thermal Shutdown
triggers dedicated SYS_SHDN# pin
hardware configured range 65°C to 127°C in 1°C steps
cannot be disabled or modified by software
Designed to support advanced CPU diodes
Supports diodes requiring the BJT or transistor model
Resistance Error Correction (up to 100 Ohms)
Up to seven External Temperature Monitors
±1°C Accuracy (60°C < TDIODE < 100°C)
0.125°C Resolution
Supports up to 2.2nF filter capacitor
Anti-parallel diodes for extra diode support and compact design
Internal Temperature Monitor
±2°C accuracy
Report Hottest temperature of many
SMBus Block Read / Write
3.3V Supply Voltage
Available in a 16 pin 4mm x 4mm QFN RoHs Compliant package
Programmable temperature limits for ALERT#
Applications
Notebook Computers
Desktop Computers
Industrial
Embedded applications
EMC1438 封装图
型号 | 制造商 | 描述 | 购买 |
---|---|---|---|
EMC1438-2-AP-TR | Vishay | 贴片电阻 0805 475Ω ±1% ±25ppm/℃ | 立即购买 |
EMC1438-1-AP-TR | Yageo | 贴片电阻 1812 18KΩ ±5% 1W ±100ppm/℃ | 立即购买 |
1、HDMI接口EMC设计标准电路 2、LVDS接口EMC设计标准电路 3、PS2接口EMC设计标准电路 4、RJ11EMC设计标准电路 5、RS232 EMC设计标准电路 6、RS485 EMC
VGA接口EMC设计标准电路,USB3.0接口EMC设计标准电路,USB2.0接口EMC设计标准电路
EMC问题越早考虑、越早解决,费用越小、效果越好。在新产品研发阶段就进行EMC设计,比等到产品EMC测试不合格才进行改进,费用可以大大节省,效率可以大大提高;反之,效率就会大大降低,费用就会大大增加。
今天就给大家分享下典型EMC三问,希望对各位小伙伴有所帮助,如您有遇到EMC问题,也可以在公众号对话框给我们留言哦,我们会针对典型的EMC问题进行回复。
相信诸位研发工程师对EMC这个词并不陌生,但是怎么做到让EMC风险最小,却是十分头疼的问题。对于了解EMC是什么,知道怎么处理EMC的工程师来说,PCB板的EMC风险评估并没有想象中的那么困难。可以简单的分为三大步来看。
EMC磁环是电子电路中常用的抗干扰组件,对高频噪声具有良好的抑制效果。它通常由铁氧体材料(锰锌)制成,EMC磁环在不同频率下具有不同的阻抗特性,通常,在低频时阻抗非常小。当信号频率上升时,磁环的阻抗
好的产品EMC性能是设计出来的,而不是靠后期测试得到! 据调研了解,发现EMC介入点大多是在产品快上市或批量生产前进行EMC测试验证,在测试阶段遇到问题在进行反复整改测试,这直接导致如下问题: 产品
读懂EMC:详谈EMC
EGP30K | EMI4184 | EMC6D103 | ESD7484 |
EMI814X | EMC1063 | ECMF06-6AM16 | ESDM3051 |
ESD7462 | ENC624J600 | EMC2101 | EGF1B |
EMC1184 | EGP30A | ESD11A5 | ESD7181 |
EMC1414 | EMC1152 | EGP30J | ESD8040 |