ACPL-785E, HCPL-7850, HCPL-7851,
5962-97557 1
Hermetically Sealed Analog Isolation Amplifier
Data Sheet
Description
Features
The HCPL-7850, HCPL-7851, and ACPL-785E are isolation
amplifiers that provide accurate, electrically isolated and
amplified representations of voltage and current. When used
with a shunt resistor to monitor the motor phase current in a
high-speed motor drive, the device offers superior reliability
compared with the traditional solutions such as current
transformers and Hall-effect sensors. These devices consist of a
sigma-delta analog-to-digital converter optically coupled to a
digital-to-analog converter in a hermetically sealed package.
The products are capable of operation and storage over the full
military temperature range and can be purchased as a
commercial product (HCPL-7850), with full MIL-PRF-38534
Class H testing (HCPL-7851), with MIL-PRF-38534 Class E testing
(ACPL-785E) (Class K with exceptions) or from the DLA Standard
Microcircuit Drawing (SMD) 5962-97557. Details of the Class E
program exceptions are listed here:
1.
Nondestructive Bond Pull, Test method 2023 of
MIL-STD-883 in screening is not required.
2.
Particle Impact Noise Detection (PIND), Test method 2020
of MIL-STD-883 in device screening and group C testing is
not required.
Performance guaranteed over full military temperature
range: –55°C to +125°C
Manufactured and tested on a MIL-PRF-38534 certified line
Hermetically sealed packages
Dual marked with device part number and DLA Standard
Microcircuit Drawing (SMD)
QML-38534, Class H and Class E
HCPL-7840 function compatibility
High common-mode rejection (CMR): 8 kV/μs at VCM =
1000V
5% gain tolerance
0.1% nonlinearity
Low offset voltage and offset temperature coefficient
100 kHz bandwidth
Applications
3.
Die Shear Strength, Test method 2019 of MIL-STD-883 in
group B testing is not required.
4.
Internal Water Vapor Content, Test method 1018 of
MIL-STD-883 in group C is not required.
5.
Scanning Electron Microscope (SEM) inspection, Test
method 2018 of MIL-STD-883 in element evaluation is not
required.
Industrial, military, and space systems
High reliability systems
Harsh industrial environments
Transportation, medical, and life critical systems
General-purpose analog signal isolation
CAUTION
1.
See Selection Guide – Lead Configuration Options for available
extensions.
Broadcom
-1-
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-785E, HCPL-7850, HCPL-7851, 5962-97557
Data Sheet
Schematic Diagram
Schematic Diagram
IDD1
IDD2
VDD1
1
VIN+
2
+
+
7 VOUT+
VIN–
3
–
–
6 VOUT–
GND1
4
8 VDD2
With common-mode rejection of 8 kV/μs, these devices are
suitable for noisy electrical environments such as those
generated by the high switching rates of power IGBTs.
5 GND2
SHIELD
NOTE
Superior performance in design-critical specifications, such as
common-mode rejection, offset voltage, nonlinearity, and
operating temperature, makes the HCPL-7850, HCPL-7851 and
ACPL-785E excellent choices for designing reliable products
such as motor controllers and inverters.
Low offset voltage together with a low offset voltage
temperature coefficient permits accurate use of
auto-calibration techniques.
A 0.1-μF bypass capacitor must be connected
between pins 1 and 4 and between pins 5 and
8.
Gain tolerance of 5% with 0.1% nonlinearity further provide
the performance necessary for accurate feedback and control.
Selection Guide – Lead Configuration Options
Part Number and Options
Commercial
HCPL-7850
MIL-PRF-38534, Class H
HCPL-7851
MIL-PRF-38534, Class E
ACPL-785E
Standard Lead Finish
Gold Plate
Gold Platea
Solder Dippedb
Option #200
Option -200
Butt Cut/Gold Platea
Option #100
Option -100
Gull Wing/Solderedb
Option #300
Option -300
Prescript for all below
5962-
5962-
Gold Platea
9755701HPC
9755701EPC
Solder Dippedb
9755701HPA
9755701EPA
Butt Cut/Gold Platea
9755701HYC
9755701EYC
Butt Cut/Solderedb
9755701HYA
9755701EYA
Gull Wing/Solderedb
9755701HXA
9755701EXA
a
SMD Part Number
a.
Gold Plate lead finish: Maximum gold thickness of leads is
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