Silicon Labs SI8423BB-B-IS
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- SI8423BB-B-IS
- Silicon Labs
- DGTL ISO 2.5KV GEN PURP 8SOIC
- Digital Isolators
- SI8423BB-B-IS Datasheet
- 8-SOIC (0.154", 3.90mm Width)
- 8-SOIC (0.154", 3.90mm Width)
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Lead free / RoHS Compliant - 3358
- Spot Inventory / Athorized Dstributor / Factory Excess Stock
- 1 year quality assurance 》
- Click to get rates
What is SI8423BB-B-IS
Silicon Labs Part Number SI8423BB-B-IS（Digital Isolators）, developed and manufactured by Silicon Labs, distributed globally by Jinftry. We distribute various electronic components from world-renowned brands and provide one-stop services, making us a trusted global electronic component distributor.
SI8423BB-B-IS is one of the part numbers distributed by Jinftry, and you can learn about its specifications/configurations, package/case, Datasheet, and other information here. Electronic components are affected by supply and demand, and prices fluctuate frequently. If you have a demand, please do not hesitate to send us an RFQ or email us immediately [email protected] Please inquire about the real-time unit price, Data Code, Lead time, payment terms, and any other information you would like to know. We will do our best to provide you with a quotation and reply as soon as possible.
SI8423BB-B-IS Specifications
- Part NumberSI8423BB-B-IS
- CategoryDigital Isolators
- ManufacturerSilicon Labs
- DescriptionDGTL ISO 2.5KV GEN PURP 8SOIC
- Package8-SOIC (0.154", 3.90mm Width)
- Series-
- TypeGeneral Purpose
- Voltage - Supply2.7 V ~ 5.5 V
- Operating Temperature-40°C ~ 125°C
- Package / Case8-SOIC (0.154", 3.90mm Width)
- Supplier Device Package8-SOIC
- Number of Channels2
- Data Rate150Mbps
- TechnologyCapacitive Coupling
- Voltage - Isolation2500Vrms
- Isolated PowerNo
- Inputs - Side 1/Side 22/0
- Channel TypeUnidirectional
- Common Mode Transient Immunity (Min)20kV/µs
- Propagation Delay tpLH / tpHL (Max)11ns, 11ns
- Pulse Width Distortion (Max)3ns
- Rise / Fall Time (Typ)2ns, 2ns
Application of SI8423BB-B-IS
SI8423BB-B-IS Datasheet
SI8423BB-B-IS Datasheet , 8-SOIC (0.154", 3.90mm Width),General Purpose,2.7 V ~ 5.5 V,-40°C ~ 125°C,8-SOIC (0.154", 3.90mm Width),8-SOIC,2,150Mbps,Capacitive Coupling,2500Vrms,No,2/0,Unidirectional,20kV/µs,11ns, 11ns,3ns,2ns, 2ns
SI8423BB-B-IS Classification
Digital Isolators
FAQ about Digital Isolators
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1. What is a digital isolator?
A digital isolator is a device that realizes signal transmission under electrical isolation. It is widely used in various electronic system equipment such as industrial control, power energy, communication networks, instrumentation, consumer electronics, etc. Its core function is to isolate different circuits at the electrical level, effectively preventing high voltage or noise signals from interfering with low voltage circuits, thereby improving the overall reliability, anti-interference ability and safety of the system.
Basic concepts and functions of digital isolators
Digital isolators transmit signals through light, electromagnetic or other means, while ensuring that there is no direct electrical connection between the two circuits, thereby providing electrical isolation. Its main functions include:
Signal isolation: prevent high voltage or noise signals from interfering with low voltage circuits.
Anti-interference ability: isolate electromagnetic interference (EMI) and radio frequency interference (RFI), and improve the stability of data transmission.
Safety: protect low voltage circuits and microcontrollers in high voltage or potentially dangerous working environments to prevent accidents.
Signal conversion: convert signals between different levels and voltage domains, and be compatible with multiple power supply voltages.
Data integrity: reduce the impact of ground loops and other potential interference sources, and improve the integrity and accuracy of data transmission.
Working principle of digital isolator
The working principle of digital isolator is mainly based on the following technologies:
Optical coupling mechanism: Use light-emitting diodes and photosensitive elements (such as photodiodes or phototransistors) to convert optical signals. The design is simple and low-cost, suitable for low-speed signal transmission, but the transmission speed is slow.
Electromagnetic coupling: Signal transmission through transformers or electromagnetic waves, suitable for high-bandwidth applications, but the design is complex and may be affected by the magnetic field environment.
Capacitive coupling: Electrical isolation of signals is achieved through capacitors, suitable for high-speed signal transmission, but the performance of low-frequency signal transmission is poor.
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2. What is the difference between optical isolators and digital isolators?
The main difference between optical isolators and digital isolators lies in their working principles, performance and application scenarios.
Working principle
Optical isolators (also known as optocouplers) use light to transmit signals through isolation barriers. It emits light through light-emitting diodes (LEDs), and photosensitive transistors receive light and convert it into electrical signals, thereby realizing isolated transmission of signals.
Digital isolators use capacitive or electromagnetic isolation technology to transmit signals. They achieve signal isolation transmission through capacitive coupling or electromagnetic isolation, with higher transmission rate and lower power consumption.
Performance comparison
Optical isolators have a slower transmission rate, usually several megabits per second, and require additional circuit components, increasing costs and PCB area. In addition, the aging problem of optical isolators is more serious, especially when working in a high temperature environment.
Digital isolators have higher transmission rates, lower power consumption and smaller size. They also have better common mode transient immunity (CMTI) and longer service life, and are more integrated, and can integrate multiple functions such as input filters, transceivers and output enable options. Digital isolators have no temperature drift problems and better performance consistency.
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3. What are the methods of digital isolation?
The methods of digital isolation mainly include the following:
Optocoupler isolation: Optocoupler isolator is the earliest isolation device. It uses optical signals to transmit electrical signals. It isolates the input signal from the internal circuit through the photoelectric coupler, or isolates the internal output signal from the external circuit. Optocoupler isolator has a higher isolation voltage and is suitable for the isolation needs of various digital signals.
Pulse transformer isolation: The pulse transformer transmits pulse signals without transmitting DC components through its smaller distributed capacitance characteristics, and is often used in the control isolation of controllable devices. The signal transmission frequency of the pulse transformer is generally between 1kHz and 1MHz, and the transmission frequency of the new high-frequency pulse transformer can reach 10MHz.
Relay isolation: Relays are simple, practical and inexpensive as isolation elements. Relays are used to isolate low-voltage DC from high-voltage AC to prevent interference from the high-voltage side from entering the low-voltage side.
Digital isolator: Digital isolator uses capacitor or electromagnetic isolation technology to transmit signals, which has the advantages of optimizing system BOM material cost, reducing PCB area, accurate timing characteristics, low power consumption, and enhanced common-mode transient immunity. Digital isolators have become the first choice for many applications in recent years.
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