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AVAGO - Precision Optically Isolated Voltage Sensor

Numéro de référence ACPL-C87B
Description Precision Optically Isolated Voltage Sensor
Fabricant AVAGO 
Logo AVAGO 





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ACPL-C87B fiche technique
ACPL-C87B, ACPL-C87A, ACPL-C870
Precision Optically Isolated Voltage Sensor
Data Sheet
Lead (Pb) Free
RoHS 6 fully
compliant
RoHS 6 fully compliant options available;
-xxxE denotes a lead-free product
Description
The ACPL-C87B/C87A/C870 voltage sensors are optical
isolation amplifiers designed specifically for voltage
sensing. Its 2 V input range and high 1 Ginput 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.
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 A, making them suitable for battery-powered
and other power-sensitive applications.
The high common-mode transient immunity (15 kV/s)
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 imple-
ments sigma-delta (-) modulation, chopper stabilized
amplifiers, and differential outputs to provide unequaled
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.
Features
 Advanced Sigma-Delta (-) Modulation Technology
 Unity Gain 1V/V, ±0.5% High Gain Accuracy (ACPL-C87B)
 1 GInput Impedence
 0 to 2 V Nominal Input Range
 -35 ppm/°C Low Gain Drift
 21V /°C Offset Voltage Drift
 0.1% Non-Linearity Max
 Active-High Shutdown Pin
 100 kHz Wide Bandwidth
 3 V to 5.5 V Wide Supply Range for Output Side
 -40° C to +105° C Operating Temperature Range
 15 kV/s Common-Mode Transient Immunity
 Compact, Auto-Insertable Stretched SO-8 Package
 Safety and Regulatory Approvals (pending):
– IEC/EN/DIN EN 60747-5-5: 1230 Vpeak working
insulation voltage
– UL 1577: 5000 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
CAUTION: It is advised that normal static precautions be taken in handling and assembly
of this component to prevent damage and/or degradation which may be induced by ESD.

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