Broadcom ACPL-C79x Precision Miniature Isolation Amplifiers

Broadcom ACPL-C790-000E, ACPL-C79A-000E, and ACPL-C79B-000E precision miniature isolation amplifiers are based on sigma-delta analog-to-digital converters and chopper stabilized amplifiers. These Broadcom precision isolation amplifiers feature high gain accuracy, low temperature drift, 3.3 V / 5V output supply operation, and a wide -40 to +105°C operating temperature range. These features are delivered in a stretched SO-8 package that has a footprint 30% smaller than the standard DIP-8 package. When mounted on a PCB, it occupies a space that is a fraction of that for a traditional Hall Effect or transformer based isolation amplifier.

These Broadcom precision miniature isolation amplifiers are designed for current and voltage sensing in electronic power converters in applications including motor drives and renewable energy systems.


  • ±0.5% High gain accuracy (ACPL-C79B)
  • –50ppm/°C Low gain drift
  • 0.4mV Input offset voltage
  • 0.05% Excellent linearity
  • 62dB SNR
  • 200kHz Wide bandwidth
  • 3V to 5.5V Wide supply range for output side
  • –40°C to +105°C Operating temperature range
  • Advanced sigma-delta (∑-∆) A/D converter technology
  • Fully differential isolation amplifier
  • 15kV/µs Common-mode transient immunity
  • Compact, auto-insertable stretched SO-8 package
  • Safety and regulatory approvals:
    • IEC/EN/DIN EN 60747-5-5: 1414Vpeak working insulation voltage
    • 5000Vrms/1min double protection rating UL 1577
    • Component acceptance notice #5 CSA


  • Current/voltage sensing in ac and servo motor drives
  • Solar inverters, wind turbine inverters
  • Industrial process control
  • Data acquisition systems
  • Switching power supply signal isolation
  • General purpose analog signal isolation
  • Traditional current transducer replacements

Functional Diagram

Block Diagram - Broadcom ACPL-C79x Precision Miniature Isolation Amplifiers
Zveřejněno: 2010-07-28 | Aktualizováno: 2022-03-11