ACNT-H870 Datasheet PDF - Broadcom Corporation

Description
The ACNT-H87B/H87A/H870 voltage sensors are optical isolation amplifiers designed specifically for voltage sensing. Its 2-V input range and high 1-G input impe-dance, makes it well suited for isolated voltage sensing requirements in electronic power converters applications including motor drives and renewable energy systems. In a typical voltage sensing implementation, a resistive voltage divider is used to scale the DC-link voltage to suit the input range of the voltage sensor. A differential output voltage that is proportional to the input voltage is created on the other side of the optical isolation barrier.

FEATUREs
◾ Advanced sigma-delta (–) modulation technology
◾ Unity gain 1V/V, ±0.5% high gain accuracy (ACNT-H87B)
◾ 1-G input impedence
◾ 0 to 2V nominal input range
◾ –35 ppm/°C low gain drift
◾ 21 μV /°C offset voltage drift
◾ 0.1% non-linearity maximum
◾ Active-high shutdown pin
◾ 100-kHz wide bandwidth
◾ 3-V to 5.5-V wide supply range for output side
◾ –40°C to +110°C operating temperature range
◾ 15 kV/μs common-mode transient immunity
◾ Compact, auto-insertable 15-mm Stretched SO-8 package
◾ Safety and regulatory approvals:
   — IEC/EN/DIN EN 60747-5-5: 2262 Vpeak working
      insulation voltage
   — UL 1577: 7500 Vrms/1 min double protection rating
   — CSA: Component Acceptance Notice #5

APPLICATIONs
◾ Isolated voltage sensing in AC and servo motor drives
◾ Isolated DC-bus voltage sensing in solar inverters, wind
   turbine inverters
◾ Isolated sensor interfaces
◾ Signal isolation in data acquisition systems
◾ General-purpose voltage isolation