Broadcom ACPL-C799T automotive R²Coupler™ sigma-delta modulator

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.

Key features

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

Additional features

• 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

Applications

• 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