Si8931/32 Data Sheet Isolated Amplifier for Voltage Measurement KEY FEATURES The Si8931/32 is a galvanically isolated analog amplifier optimized for voltage sensing. Its 2.5 V input range is ideal for isolated voltage sensing applications. The output is a differential 0 to 2.5 V nominal input voltage analog signal (Si8931) or single-ended signal (Si8932) that is proportional to the input voltage. Low signal delay: 1 s Typical input offset: 0.16 mV The Si8931/32 provides excellent linearity with low offset and gain drift to ensure that accuracy Typical gain error: 0.06% is maintained over the entire operating temperature range. Exceptionally high common-mode transient immunity means that the Si8931/32 delivers accurate measurements even in the Excellent drift specifications 0.75 V/C offset drift presence of high-power switching as is found in motor drive systems and inverters. 6 ppm/C typical gain drift The Si8931/32 isolated voltage sensing amplifier utilizes Skyworks proprietary isolation tech- Typical nonlinearity: 0.01% nology. It supports up to 5.0 kVrms withstand voltage per UL1577. This technology enables Typical SNR: 76 dB higher performance, reduced variation with temperature and age, tighter part-to-part matching, High common-mode transient and longer lifetimes compared to other isolation technologies. immunity: 75 kV/s Applications: Auomotive-grade OPNs AIAG-compliant PPAP Industrial, HEV and renewable energy inverters documentation support AC, Brushless, and DC motor controls and drives IMDS and CAMDS listing Variable speed motor control in consumer white goods support Isolated switch mode and UPS power supplies Compact packages General industrial data acquisition and sensor interface 8-pin wide body stretched SOIC 8-pin narrow body SOIC Automotive onboard chargers, battery management systems, and charging stations 40 to 125 C Safety Approvals (pending): UL 1577 recognized Up to 5000 Vrms for 1 minute CSA approval IEC 60950-1, 62368-1 (reinforced insulation) VDE certification conformity VDE0884 Part 11 (basic/reinforced insulation) CQC certification approval GB4943.1-2011 Si8931 Si8932 VDDA VDDB VDDA VDDB OSC OSC VIN VIN AOP AO PWM PWM PWM PWM GNDB NC AON NC Transmitter Receiver Transmitter Receiver GNDA GNDB GNDA GNDB Skyworks Solutions, Inc. Phone 781 376-3000 Fax 781 376-3100 sales skyworksinc.com www.skyworksinc.com 1 Rev. 0.8 Skyworks Proprietary Information Products and Product Information are Subject to Change Without Notice December 4, 2021 1 CMOS Isolation CMOS IsolationSi8931/32 Data Sheet Ordering Guide 1. Ordering Guide Automotive Ordering Options Ordering Part Ordering Part 1, 2, 3 Number 1, 2, 3, 4 Input Range Isolation Rating Output Package Type Number WB Stretched Si8931D-IS4 Si8931D-AS4 0 to 2.5 V nominal 5.0 kVrms Differential SOIC-8 Si8931B-IS Si8931B-AS 0 to 2.5 V nominal 2.5 kVrms Differential NB SOIC-8 WB Stretched Si8932D-IS4 Si8932D-AS4 0 to 2.5 V nominal 5.0 kVrms Single-ended SOIC-8 Si8932B-IS Si8932B-AS 0 to 2.5 V nominal 2.5 kVrms Single-ended NB SOIC-8 Note: 1. All packages are RoHS-compliant. 2. Si and SI are used interchangeably. 3. AEC-Q100 pending qualification. 4. Automotive-Grade devices - suffix) are identical in construction materials, topside marking, and electrical parameters to their Industrial Grade -I suffi) version counterparts. Automotive-Grade products are produced utilizing full automotive process flows and additional statistical process controls throughout the manufacturing flow. The Automotive-Grade part number is included on shipping labels. Skyworks Solutions, Inc. Phone 781 376-3000 Fax 781 376-3100 sales skyworksinc.com www.skyworksinc.com 2 Rev. 0.8 Skyworks Proprietary Information Products and Product Information are Subject to Change Without Notice December 4, 2021 2