LTM2892IY-S#PBF

Common Mode Transient Immunity (Min):	50kV/µs
Base Part Number:	LTM2892
Supplier Device Package:	24-BGA (9x6.25)
Package / Case:	24-BBGA
Mounting Type:	Surface Mount
Operating Temperature:	-40°C ~ 85°C
Voltage - Supply:	3 V ~ 5.5 V
Rise / Fall Time (Typ):	3ns, 3ns
Pulse Width Distortion (Max):	--
Propagation Delay tpLH / tpHL (Max):	100ns, 100ns
Data Rate:	4MHz, 8MHz
Series:	µModule®
Voltage - Isolation:	3500Vrms
Channel Type:	Unidirectional
Inputs - Side 1/Side 2:	3/3
Number of Channels:	6
Isolated Power:	No
Type:	SPI
Technology:	Magnetic Coupling
Part Status:	Active
Packaging:	Tray

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Introduction:

Digital isolators are an excellent way to improve the reliability and safety of electrical systems by providing a barrier between circuits and components. The LTM2892IY-S#PBF is a 28-pin integrated circuit that provides digital isolation for analog and digital signals up to 5.5kV. It uses a patented on-chip capacitive coupling technology to isolate signals without the need for transformers or optocouplers. In this article, we\'ll discuss the applications and working principle of the LTM2892IY-S#PBF.

Application Field of LTM2892IY-S#PBF

The LTM2892IY-S#PBF is an ideal solution for digital isolation applications in instrumentation, industrial and medical equipment, and telecommunications systems. It offers the highest level of input-to-output isolation along with high-speed data transfer capabilities. It is designed to withstand external noise, surge, and overvoltage conditions. The LTM2892IY-S#PBF is particularly useful in systems that require both digital and analog signal isolation, such as voltage level shifting, isolation amplifiers, and data converters.

Working Principle of LTM2892IY-S#PBF

The working principle of the LTM2892IY-S#PBF is based on the capacitive isolation technique. The chip features two sets of input and output pins that are electrically isolated by a dielectric medium. These pins are connected by a thin film of capacitors that enable a transfer of data between the two circuits without electrical contact. The input side of the isolator is loaded with a common-mode voltage, while the output side of the isolator is loaded with a relative common-mode voltage. This isolation allows the chip to block an isolated current from passing through it.The LTM2892IY-S#PBF also features a patented "on-chip electrostatic discharge (ESD) protection" structure. This allows the chip to withstand high levels of external ESD pulses, making it suitable for use in systems where static electricity may be present.

Conclusion

The LTM2892IY-S#PBF integrates a high-isolation solution in a tiny package. Its key features make it an ideal solution for applications such as signal level shifting, isolation amplifiers, and industry-standard data converters. The chip utilizes a proprietary capacitive coupling technology to achieve ultra-high input-to-output isolation and high-speed data transfer capabilities. Its on-chip ESD protection structure increases its tolerance to external ESD pulses, making it suitable for use in static electricity-prone environments.

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