Data Sheet
ACPL-C87AT/ACPL-C87BT
Automotive High Precision DC Voltage Isolation
Sensor
Description
Features
®
The Broadcom ACPL-C87AT/C87BT isolation sensors
Unity gain
utilize superior optical coupling technology, with sigma-delta
(-) analog-to-digital converter, chopper stabilized
amplifiers, and a fully differential circuit topology to provide
unequaled isolation-mode noise rejection, low offset, high
gain accuracy and stability.
± 0.5% (ACPL-C87BT) and ± 1% (ACPL-C87AT) gain
tolerance @ 25°C
–0.3 mV Input offset voltage
0.05% non linearity
25 ppm/°C gain drift vs. temperature
100 kHz bandwidth
ACPL-C87AT (±1% gain tolerance) and ACPL-C87BT
(±0.5% gain tolerance) are designed for high precision DC
voltage sensing in electronic motor drives, DC/DC and
AC/DC converter and battery monitoring system. The
ACPL-C87AT/C87BT features high input impedance and
operate with full span of analog input voltage up to 2.46V.
The shutdown feature provides power saving and can be
controlled from external source, such as microprocessor.
0 to 2V nominal input range
Qualified to AEC-Q100 Grade 1 test guidelines
Operating temperature: –40°C to +125°C
Shutdown feature (active high)
15 kV/µs common-mode rejection at V
= 1 kV
CM
Working voltage, V
= 1414 V
peak
IORM
Compact, surface mount stretched SO8 package
Worldwide safety approval:
The high common-mode transient immunity (15 kV/µs) of
the ACPL-C87AT/C87BT maintains the precision and
stability needed to accurately monitor DC rail voltage in high
noise motor control environments. This galvanic safe
isolation solution is delivered in a compact, surface mount
stretched SO-8 (SSO-8) package that meets worldwide
regulatory safety standards.
– UL 1577 (5000 V
– CSA
/1 minute)
RMS
– IEC/EN/DIN EN 60747-5-5
Applications
Automotive BMS battery pack voltage sensing
Automotive DC/DC converter voltage sensing
Automotive motor inverter DC bus voltage sensing
2
®
Broadcom R Coupler isolation products provide the
reinforced insulation and reliability needed for critical
automotive and high temperature industrial applications.
Automotive AC/DC (charger) DC output voltage
sensing
Isolation interface for temperature sensing
General-purpose voltage sensing and monitoring
CAUTION! Take normal static precautions in handling and assembly of this component to prevent damage and/or
degradation which may be induced by ESD.
Broadcom
AV02-3564EN
July 24, 2018