HCPL7800300E Avago Technologies, HCPL7800300E Datasheet

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HCPL7800300E

Manufacturer Part Number

HCPL7800300E

Description

SOP

Manufacturer

Avago Technologies

Datasheet

1.HCPL7800000E.pdf (18 pages)

Specifications of HCPL7800300E

Date_code

10+

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Download datasheet (138Kb)

Description

The HCPL-7800(A) 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

HCPL-7800(A). A differential

output voltage is created on the

other side of the HCPL-7800(A)

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 HCPL-7800(A) was

designed to ignore very high

common-mode transient slew

rates (of at least 10 kV/µs).

The high CMR capability of the

HCPL-7800(A) isolation

amplifier provides the precision

and stability needed to

accurately monitor motor

current in high noise motor

control environ-ments, providing

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.

Agilent HCPL-7800A/HCPL-7800

Isolation Amplifier

Data Sheet

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 con-ditions. For general

applications, we recommend the

HCPL-7800 (gain tolerance of

±3%). For precision applications

Agilent offers the HCPL-7800A

with part-to-part gain tolerance

of ±1%. The HCPL-7800(A)

utilizes sigma delta (

analog-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,

industry standard 8-pin DIP

package that meets worldwide

regulatory safety standards.

(A gull-wing surface mount

option #300 is also available).

Σ−∆ )

Features

• 15 kV/µs Common-Mode Rejec-

• Compact, Auto-Insertable Stan-

• 0.00025 V/V/°C Gain Drift

• 0.3 mV Input Offset Voltage

• 100 kHz Bandwidth

• 0.004% Nonlinearity

• Worldwide Safety Approval: UL

• Advanced Sigma-Delta (Σ−∆)

• Fully Differential Circuit Topology

Applications

• Motor Phase and Rail Current

• Inverter Current Sensing

• Switched Mode Power Supply

• General Purpose Current Sensing

• General Purpose Analog Signal

GND1

Functional Diagram

V

V

V

tion at V

dard 8-pin DIP Package

vs. Temperature

1577 (3750 Vrms/1 min.) and CSA,

IEC/EN/DIN EN 60747-5-2

A/D Converter Technology

Sensing

Signal Isolation

and Monitoring

Isolation

DD1

IN+

IN-

1

2

3

4

I

DD1

CM

+

-

= 1000 V

SHIELD

+

-

I

DD2

8

7

5

6

V

V

V

GND2

DD2

OUT+

OUT-

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