ACPL-C78A/C780/C784 Isolation Amplifiers Broadcom ACPL-C78A, ACPL-C780, and ACPL-C784 Isolation Amplifiers use sigma-delta Analog-to-Digital Converter (ADC) technology, chopper-stabilized amplifiers, and a fully differential circuit topology to deliver unequaled isolation-mode noise rejection. This Broadcom device delivers excellent offset and gain accuracy and stability over time and temperature. The ACPL-C78A, ACPL-C780, and ACPL-C784 Isolation Amplifier family features 15kV/µs common-mode rejection at VCM=1000V. These devices are ideal for current sensing in electronic motor drives.