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SILICON LABS SI8921BD-IS4 product image
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SILICON LABS SI8921BD-IS4RoHS

Manufacturer
SILICON LABS
MPN
SI8921BD-IS4
LCSC Part #
C430307
Packaging
SOIC-8-300mil
Customer #
Key Attributes
1 40uV SOIC-8-300mil Instrumentation, Op Amps, Buffer Amps RoHS
Datasheetpdf iconSILICON LABS SI8921BD-IS4
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QtyUnit Price(Reference Only)Total Amount
1+$ 3.7877$ 3.79
200+$ 1.4663$ 293.26
500+$ 1.4154$ 707.70
1,000+$ 1.3892$ 1389.20
Standard Packaging46/Full Tube
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Products Specifications

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TypeDescription
CategoryIntegrated Circuits (ICs)/Linear/Amplifiers/Instrumentation, Op Amps, Buffer Amps
ManufacturerSILICON LABS
PackagingSOIC-8-300mil
Number of Channels1
Vos - Input Offset Voltage40uV
Slew Rate-
Input Offset Current(Ios)-
Input offset current drift(Ios TC)-
Features-
Operating Temperature-40℃~+125℃
Ib - Input Bias Current-
Common Mode Rejection Ratio(CMRR)-
Maximum Power Supply Range (Vdd-Vss)-
Input Offset Voltage Drift(Vos TC)500nV/℃
Gain Bandwidth Product-
Quiescent Current-
Input Voltage Noise Density-
Output Current-
Dual Supply-
Rail to Rail-
Single Supply3V~5.5V
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Additional Information

TypeDetails
Minimum1
Multiple1
Standard Packaging46
Sales UnitPiece

Introduction

AI Translation

The Si8921/22 is a galvanically isolated analog amplifier. The low-voltage differential input 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 by either 8.2× or 32.8×. The very low signal delay of the Si8921/22 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. Exceptionally high common-mode transient immunity means that the Si8921/22 delivers accurate measurements even in the presence of high-power switching as is found in motor drive systems and inverters. The Si8921/22 isolated amplifier utilizes Silicon Labs’ proprietary isolation technology. It supports up to 5.0 kVrms withstand voltage per UL1577. This technology enables higher performance, reduced variation with temperature and age, tighter part-to-part matching, and longer lifetimes compared to other isolation technologies.

Features

AI Translation
  • Low voltage differential input, ±62.5 mV and ±250 mV options
  • Low signal delay: 0.8 μs
  • Typical input offset: ±40 μV
  • Typical gain error: ±0.1%
  • Excellent drift specifications: ±0.5 μV/℃ typical offset drift, -4 ppm/℃ typical gain drift
  • Typical Nonlinearity: 0.003% fullscale
  • Typical SNR: 82 dB over 100 kHz bandwidth
  • Typical THD: -88 dB
  • High common-mode transient immunity: 75 kV/μs
  • Automotive-grade OPNs: AIAG compliant PPAP documentation support, IMDS and CAMDS listing support
  • Compact packages: 8-pin wide body stretched SOIC, 8-pin narrow body SOIC
  • -40 to 125 ℃

Applications

AI Translation
  • Industrial, HEV and renewable energy inverters
  • AC, Brushless, and DC motor controls and drives
  • Variable speed motor control in consumer white goods
  • Isolated switch mode and UPS power supplies
  • Automotive on-board chargers, battery management systems, and charging stations