Broadcom

Broadcom Isolation Amplifiers for Voltage Sensing

The ACPL-C87B/C87A/C870 voltage sensors from Broadcom are optical isolation amplifiers designed specifically for voltage sensing.

  • Advanced Sigma-Delta Modulation Technology
  • Unity Gain 1 V/V ±0.5% High Gain Accuracy (ACPL-C87B)
  • 1 GW Input Impedance
  • 0 to 2 V Nominal Input Range
  • -35 ppm/°C Low Gain Drift

Product Description

The ACPL-C87B/C87A/C870 voltage sensors from Broadcom are optical isolation amplifiers designed specifically for voltage sensing.
The 2 V input range and high 1 GΩ input impedance make these sensors 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.
For general applications the ACPL-C87A (±1% gain tolerance) and the ACPL-C870 (±3% gain tolerance) are recommended. For high precision requirements the ACPL-C87B (±0.5% gain tolerance) can be used. The ACPL-C87B/C87A/C870 family operates from a single 5 V supply and provides excellent linearity.

An active-high shutdown pin is available which reduces the IDD1 current to only 15 mA making them suitable for battery-powered and other power-sensitive applications.
The high common-mode transient immunity (15 kV/μs) of the ACPL-C87B/C87A/C870 provides the precision and stability needed to accurately monitor DC-link voltage in high noise environments. Combined with superior optical coupling technology the ACPL-C87B/C87A/C870 implements sigma-delta modulation chopper stabilized amplifiers and differential outputs to provide unequalled isolation-mode noise rejection low offset high gain accuracy and stability.

This performance is delivered in a compact auto-insertable stretched SO-8 (SSO-8) package that meets worldwide regulatory safety standards.

Typical applications

Isolated Voltage Sensing in AC and Servo Motor Drives Isolated DC-Bus Voltage Sensing in Solar Inverters and Wind Turbine Inverters Isolated Sensor Interfaces Signal Isolation in Data Acquisition Systems and General Purpose Voltage Isolation.

Safety and Regulatory Approvals

IEC/EN/DIN EN 60747-5-5: 1414 Vpeak working insulation voltage; UL 1577: 5000 Vrms/1 min double protection rating; CSA: Component Acceptance Notice #5.

Form factor

Compact Auto-Insertable Stretched SO-8 Package.

Product Range
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2313197
ACPL-C87BT-000E

ACPL-C87BT-000E

BROADCOM LIMITED

SENSOR, DC VOLTAGE ISOLATION, AUTOMOTIVE

SENSOR, DC VOLTAGE ISOLATION, AUTOMOTIVE; No. of Channels:1 Channel; Optocoupler Case Style:SSO; No. of Pins:8Pins; Isolation Voltage:5kV; CTR Min:-; Bandwidth:100kHz; Packaging:Each; Product Range:-; SVHC:No SVHC (17-Dec-2015); Input Current:15mA; No. o

2,021  

Price for: Each

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More stock available week commencing 01/08/16
2213633
ACPL-C870-000E

ACPL-C870-000E

BROADCOM LIMITED

Isolation Amplifier, Optically, 1 Amplifier, 5 kV, 3V to 5.5V, SOIC, 8 Pins

SENSOR, VOLTAGE, ISOLATION AMPLIFIER; No. of Amplifiers:1 Amplifier; Isolation Voltage:5kV; Supply Voltage Range:3V to 5.5V; Amplifier Case Style:SOIC; No. of Pins:8Pins; Bandwidth:100kHz; Gain Non-Linearity Max:0.1%; Operating Temperature Min:-40°C; Ope

988  

Price for: Each

1+ £4.39 10+ £3.71 50+ £3.37 100+ £3.22 more…

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2213635
ACPL-C87B-000E

ACPL-C87B-000E

BROADCOM LIMITED

Isolation Amplifier, Optically, 1 Amplifier, 9.9 mV, 5 kV, 3V to 5.5V, SOIC, 8 Pins

SENSOR, VOLTAGE, ISOLATION AMPLIFIER; No. of Amplifiers:1 Amplifier; Input Offset Voltage:9.9mV; Isolation Voltage:5kV; Supply Voltage Range:3V to 5.5V; Amplifier Case Style:SOIC; No. of Pins:8Pins; Bandwidth:100kHz; Gain Non-Linearity Max:0.1%; Operatin

413  

Price for: Each

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  • 400 will be available for delivery on 15-May-2016
  • More stock available week commencing 01/08/16
    2313196
    ACPL-C87AT-000E

    ACPL-C87AT-000E

    BROADCOM LIMITED

    SENSOR, DC VOLTAGE ISOLATION, AUTOMOTIVE

    SENSOR, DC VOLTAGE ISOLATION, AUTOMOTIVE; No. of Channels:1 Channel; Optocoupler Case Style:SSO; No. of Pins:8Pins; Isolation Voltage:5kV; CTR Min:-; Bandwidth:100kHz; Packaging:Each; Product Range:-; SVHC:No SVHC (17-Dec-2015); Input Current:15mA; No. o

    52  

    Price for: Each

    1+ £7.41 10+ £6.44 25+ £5.69 50+ £5.25 more…

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  • 600 will be available for delivery on 26-Jun-2016
  • More stock available week commencing 01/08/16
    2213634
    ACPL-C87A-000E

    ACPL-C87A-000E

    BROADCOM LIMITED

    Isolation Amplifier, Optically, 1 Amplifier, 5 kV, 3V to 5.5V, SOIC, 8 Pins

    SENSOR, VOLTAGE, ISOLATION AMPLIFIER; No. of Amplifiers:1 Amplifier; Isolation Voltage:5kV; Supply Voltage Range:3V to 5.5V; Amplifier Case Style:SOIC; No. of Pins:8Pins; Bandwidth:100kHz; Gain Non-Linearity Max:0.1%; Operating Temperature Min:-40°C; Ope

    66  

    Price for: Each

    1+ £5.26 10+ £4.64 50+ £4.30 100+ £3.36 more…

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  • 241 will be available for delivery on 16-May-2016
  • 1,120 will be available for delivery on 16-Jul-2016
  • More stock available week commencing 01/08/16
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