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ACPL-C78A-500E

Description
Optically Isolated Amplifiers 5000 Vrms 10 kHz
CategoryAnalog mixed-signal IC    Amplifier circuit   
File Size433KB,17 Pages
ManufacturerBroadcom
Environmental Compliance
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ACPL-C78A-500E Overview

Optically Isolated Amplifiers 5000 Vrms 10 kHz

ACPL-C78A-500E Parametric

Parameter NameAttribute value
Is it Rohs certified?conform to
MakerBroadcom
package instructionROHS COMPLIANT, SOP-8
Reach Compliance Codecompliant
ECCN codeEAR99
Amplifier typeISOLATION AMPLIFIER
Nominal bandwidth (3dB)100 MHz
Maximum common mode voltage2.8 V
JESD-30 codeR-PDSO-G8
JESD-609 codee3
length6.807 mm
Humidity sensitivity level1
Number of functions1
Number of terminals8
Maximum operating temperature85 °C
Minimum operating temperature-40 °C
Package body materialPLASTIC/EPOXY
encapsulated codeSOP
Encapsulate equivalent codeSOP8,.45
Package shapeRECTANGULAR
Package formSMALL OUTLINE
Peak Reflow Temperature (Celsius)NOT SPECIFIED
power supply5 V
Certification statusNot Qualified
Maximum slew rate16 mA
Supply voltage upper limit5.5 V
Nominal supply voltage (Vsup)5 V
surface mountYES
Temperature levelINDUSTRIAL
Terminal surfaceMatte Tin (Sn)
Terminal formGULL WING
Terminal pitch1.27 mm
Terminal locationDUAL
Maximum time at peak reflow temperatureNOT SPECIFIED
Maximum voltage gain8.08
Minimum voltage gain7.92
width5.85 mm
Base Number Matches1
ACPL-C78A, ACPL-C780, ACPL-C784
Miniature Isolation Amplifiers
Data Sheet
Description
The ACPL-C78A/C780/C784 isolation amplifier family was
designed for current sensing in electronic motor drives. In
a typical implementation, motor currents flow through an
external resistor and the resulting analog voltage drop is
sensed by the ACPL-C78A/C780/C784. A differential output
voltage is created on the other side of the ACPL-C78A/
C780/C784 optical isolation barrier. This differential output
voltage is proportional to the motor current and can be
converted to a single-ended signal by using an op-amp
as shown in the recommended application circuit. Since
common-mode voltage swings of several hundred volts
in tens of nanoseconds are common in modern switching
inverter motor drives, the ACPL-C78A/C780/C784 was
designed to ignore very high common-mode transient
slew rates (of at least 10 kV/μs).
The high CMR capability of the ACPL-C78A/C780/C784
isolation amplifier provides the precision and stability
needed to accurately monitor motor current in high noise
motor control environments, providing for smoother
control (less “torque ripple”) in various types of motor
control applications.
The product can also be used for general analog signal
isolation applications requiring high accuracy, stability,
and linearity under similarly severe noise conditions. For
general applications, we recommend the ACPL-C780 (gain
tolerance of ±3%) and the ACPL-C784 (gain tolerance of
±5%). For precision applications Avago Technologies offers
the ACPL-C78A with part-to-part gain tolerance of ±1%.
The ACPL-C78A/C780/C784 utilizes sigma-delta (∑-∆) an-
alog-to-digital converter technology, chopper stabilized
amplifiers, and a fully differential circuit topology.
Together, these features deliver unequaled isolation-
mode noise rejection, as well as excellent offset and gain
accuracy and stability over time and temperature. This
performance is delivered in a compact, auto-insertable,
Stretched SO-8 (SSO-8) package that meets worldwide
regulatory safety standards.
Features
15 kV/μs Common-Mode Rejection at V
CM
= 1000 V
Compact, Auto-Insertable Stretched SO-8 Package
0.00025 V/V/°C Gain Drift vs. Temperature
0.3 mV Input Offset Voltage
100 kHz Bandwidth
0.004% Nonlinearity
Worldwide Safety Approval: UL 1577 (5000 Vrms/1 min.),
CSA and IEC/EN/DIN EN 60747-5-2
Advanced Sigma-Delta (∑-∆) A/D Converter Technology
Fully Differential Amplifier
Applications
Motor Phase and Rail Current Sensing
Inverter Current Sensing
Switched Mode Power Supply Signal Isolation
General Purpose Current Sensing and Monitoring
General Purpose Analog Signal Isolation
Functional Diagram
V
DD1
1
V
IN+
2
V
IN-
3
GND1 4
I
DD1
+
-
SHIELD
I
DD2
8 V
DD2
7 V
OUT+
6 V
OUT-
5 GND2
+
-
NOTE: A 0.1
μF
bypass capacitor must be connected between pins 1 and
4 and between pins 5 and 8.
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.

ACPL-C78A-500E Related Products

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Is it Rohs certified? conform to conform to conform to conform to conform to
Maker Broadcom Broadcom Broadcom Broadcom Broadcom
package instruction ROHS COMPLIANT, SOP-8 SOP, SOP8,.45 SOP, SOP8,.45 ROHS COMPLIANT, SSOP-8 ROHS COMPLIANT, SSOP-8
Reach Compliance Code compliant compliant compliant compliant compliant
ECCN code EAR99 EAR99 EAR99 EAR99 EAR99
Amplifier type ISOLATION AMPLIFIER ISOLATION AMPLIFIER ISOLATION AMPLIFIER ISOLATION AMPLIFIER ISOLATION AMPLIFIER
Nominal bandwidth (3dB) 100 MHz 100 MHz 100 MHz 100 MHz 100 MHz
Maximum common mode voltage 2.8 V 2.8 V 2.8 V 2.8 V 2.8 V
JESD-30 code R-PDSO-G8 R-PDSO-G8 R-PDSO-G8 R-PDSO-G8 R-PDSO-G8
JESD-609 code e3 e3 e3 e3 e3
length 6.807 mm 6.807 mm 6.807 mm 6.807 mm 6.807 mm
Humidity sensitivity level 1 1 1 1 1
Number of functions 1 1 1 1 1
Number of terminals 8 8 8 8 8
Maximum operating temperature 85 °C 85 °C 85 °C 85 °C 85 °C
Minimum operating temperature -40 °C -40 °C -40 °C -40 °C -40 °C
Package body material PLASTIC/EPOXY PLASTIC/EPOXY PLASTIC/EPOXY PLASTIC/EPOXY PLASTIC/EPOXY
encapsulated code SOP SOP SOP SOP SOP
Encapsulate equivalent code SOP8,.45 SOP8,.45 SOP8,.45 SOP8,.45 SOP8,.45
Package shape RECTANGULAR RECTANGULAR RECTANGULAR RECTANGULAR RECTANGULAR
Package form SMALL OUTLINE SMALL OUTLINE SMALL OUTLINE SMALL OUTLINE SMALL OUTLINE
Peak Reflow Temperature (Celsius) NOT SPECIFIED NOT SPECIFIED NOT SPECIFIED NOT SPECIFIED NOT SPECIFIED
power supply 5 V 5 V 5 V 5 V 5 V
Certification status Not Qualified Not Qualified Not Qualified Not Qualified Not Qualified
Maximum slew rate 16 mA 16 mA 16 mA 16 mA 16 mA
Supply voltage upper limit 5.5 V 5.5 V 5.5 V 5.5 V 5.5 V
Nominal supply voltage (Vsup) 5 V 5 V 5 V 5 V 5 V
surface mount YES YES YES YES YES
Temperature level INDUSTRIAL INDUSTRIAL INDUSTRIAL INDUSTRIAL INDUSTRIAL
Terminal surface Matte Tin (Sn) Tin (Sn) Matte Tin (Sn) Tin (Sn) Tin (Sn)
Terminal form GULL WING GULL WING GULL WING GULL WING GULL WING
Terminal pitch 1.27 mm 1.27 mm 1.27 mm 1.27 mm 1.27 mm
Terminal location DUAL DUAL DUAL DUAL DUAL
Maximum time at peak reflow temperature NOT SPECIFIED NOT SPECIFIED NOT SPECIFIED NOT SPECIFIED NOT SPECIFIED
Maximum voltage gain 8.08 8.4 8.4 8.24 8.08
Minimum voltage gain 7.92 7.6 7.6 7.76 7.92
width 5.85 mm 5.85 mm 5.85 mm 5.85 mm 5.85 mm
Base Number Matches 1 - 1 1 1
Minimum insulation voltage - 5000 V - 5000 V 5000 V

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