Automotive R²Coupler™ Optically Isolated Sigma-Delta Modulator


  • Qualified to AEC-Q100 Grade 1 Test Guidelines
  • 1-Bit, Decond-Order Sigma-Delta Modulator
  • Differential Inputs of ±50 mV
  • 10 MHz Internal Clock

The Broadcom® ACPL-C799T is a 1-bit, second-order sigma-delta (Σ-Δ) modulator which converts an analog input signal into a high-speed data stream with galvanic isolation based on the optical coupling technology. This isolated ADC delivers the reliability, small size, superior isolation, and over-temperature performance, allowing motor drive designers to accurately measure current. Broadcom R2Coupler™ isolation products provide the reinforced insulation and reliability needed for critical automotive and high-temperature industrial applications, in a compact SSO-8 package

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  • 16-bit Resolution, No Missing Codes (12 Bits ENOB)
  • Signal-to-Noise Ratio: 77 dB Typ.
  • Compact, Surface-mount SSO-8 Package
  • Superior Optical Isolation and Insulation
  • Common-Mode Transient Immunity: 25 kV/µs
  • Safety and Regulatory Approval:
    • IEC/EN/DIN EN 60747-5-5: 1414 VPEAK Working Insulation Voltage
    • UL 1577: 5000 VRMS/1 Minute Isolation Voltage
    • CSA: Component Acceptance Notice #5
  • Automotive Battery Pack Current Sensing
  • Automotive Motor Phase and Rail Current Sensing
  • Automotive Motor Inverter DC Bus Current Sensing
  • Automotive DC/DC Converter Current Sensing
  • Automotive AC/DC Charger Current Sensing
  • General Purpose Current and Voltage Sensing
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