Si8921BD-IS4

Isolated Analog Amplifier

Si8921BD-IS4 devices are galvanically isolated analog amplifiers. The low voltage, differential input has a ±250 mV specified input range which is ideal for measuring voltage across a current shunt resistor or for any place where a sensor must be isolated from the control system. The output is a differential analog signal amplified to a peak 2.5V full scale output. The very low signal delay allows control systems to respond quickly to fault conditions or changes in load. Low offset and gain drift ensure that accuracy is maintained over the entire operating temperature range of -40 to +125˚C. Exceptionally high common mode transient immunity results in accurate measurements even in the presence of high power switching like would be found in a motor drive system or inverter. It supports 5 kV withstand voltage per UL1577 in a wide-body stretched SOIC-8 package. This technology enables higher performance, reduced variation with temperature and age, tighter part-to-part matching and longer lifetimes compared to other isolation technologies.

Data Sheets Eval Kit

Support ECAD Model

Specifications

Output ModeDifferential Analog

InputDifferential

Specified Input Range±250 mV

ClockNA

Isolation Rating (kVrms)5

Package TypeWB SOIC8

Package size7.5 x 5.85

Temperature Range Min (°C)-40

Temperature Range Max (°C)125

CMTI75

OPNSi8921BD-IS4

Product Documents

Quality and Packaging

Look up product's green / pb-free status and information on RoHS, REACH, Halogen Free, and PFIS.

Certificate of Conformance

Evaluation Kits

si8921iso-kit

Si8921 Isolated Amplifier Evaluation Kit

The SI8921ISO-KIT evaluation board allows for quick connection to a shunt resistor for check out of the functionality of the Si8921 isolated amplifier. The evaluation board is populated with the Si8921BD-IS4 device which allows for connection to a shunt resistor that produces up to ±310 mV at full load. The board features test points for monitoring the inputs, outputs, and supplies for the device. Surface mount component pads are available for input or output filtering circuits. The Si8921ISO-KIT evaluation board demonstrates the functionality, the accuracy, the stability, and the low signal delay of the Si8921 amplifier. 

MSRP $75.00

Buy Now Learn More

Sales Help
Technical Help

Find Your Sales Representative and Distributor
Consult with your Skyworks sales representative or distributor to find the best solution for your design.

Request a Quote
Get a quote for the specific products and quantities you need.

Working with Skyworks
Learn more about our purchase process to navigate quickly and efficiently

Support and Resources
Explore Skyworks support options, consult with our global sales and channel partners, and get the resources and expert guidance and custom development services you need to help you with your next innovation.

Technical Documents
Explore application notes, block diagrams, data sheets, user guides, ADS model calculators, installation references, S parameters and more.

Product Lifecycle Status Lookup
Lookup the product lifecycle status of Skyworks part number

Certificate of Conformance
Look up a product’s Certificate of Conformance for information such as REACH, RoHS, IEC 624741 and more.

Engineer examining electrical components

Previously Visited Products

New and Featured Products

Previously Visited Applications

New and Featured Applications