Broadcom

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Description

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.

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.

1.

See Selection Guide – Lead Configuration Options for available

extensions.

Features



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



Industrial, military, and space systems



High reliability systems



Harsh industrial environments



Transportation, medical, and life critical systems



General-purpose analog signal 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.

ACPL-785E, HCPL-7850, HCPL-7851,

Hermetically Sealed Analog Isolation Amplifier

Data Sheet