Datasheet > HCPL-7840-000E

HCPL-7840-000E

更新时间： 2024-11-04 14:50:47

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安华高科 - AVAGO		/
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19页	151K
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HCPL-7840-000E 数据手册

HCPL-7840

Isolation Ampliﬁer

Data Sheet

Lead (Pb) Free

RoHS 6 fully

compliant

RoHS 6 fully compliant options available;

-xxxE denotes a lead-free product

Description

Features

 1ꢀ kV/μs common-mode rejection at V_CM= 1000 V

 Compact, auto-insertable standard 8-pin DIP package

The HCPL-7840 isolation ampliﬁer family was designed

for current sensing in electronic motor drives. In a typical

implementation, motor currents ﬂow through an external  0.0002ꢀ V/V/°C gain drift vs. temperature

resistor and the resulting analog voltage drop is sensed by

the HCPL-7840. A diﬀerential output voltage is created on

the other side of the HCPL-7840 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

 0.3 mV input oﬀset voltage

 100 kHz bandwidth

 0.0045 nonlinearity

 Worldwide safety approval:

UL 1ꢀ77 (37ꢀ0 Vrms/1 min.)

and CSA, IEC/EN/DIN EN 60747-ꢀ-2

 Advanced Sigma-Delta (∑-Δ) A/D converter technol-

ogy

HCPL-7840 was designed to ignore very high common-  Fully diﬀerential circuit topology

mode transient slew rates (of at least 10 kV/μs).

 0.8 μm CMOS IC technology

The high CMR capability of the HCPL-7840 isolation

ampliﬁer provides the precision and stability needed to

accurately monitor motor current in high noise motor

control environ-ments, providing for smoother control

(less “torque ripple”) in various types of motor control

applications.

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

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-7840 (gain

tolerance of ꢀ5). The HCPL-7840 utilizes sigma delta

(∑-Δ) analog-to-digital converter technology, chopper

stabilized ampliﬁers, and a fully diﬀerential circuit topol-

ogy fabricated using Avago’s 0.8 μm CMOS IC process.

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 world-

wide regulatory safety standards. (A gull-wing surface

mount option #300 is also available).

Functional Diagram

DD2

DD1

DD2

IN+

IN–

OUT+

–

OUT–

GND1

GND2

SHIELD

A 0.1 μF bypass capacitor must be connected

between pins 1 and 4 and between pins ꢀ 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.

12 3 4 5 6 7...19

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与HCPL-7840-000E相关器件

型号	品牌	获取价格	描述	数据表
HCPL-7840-060	AVAGO	获取价格	ISOLATION AMPLIFIER, 3750V ISOLATION-MIN, 100kHz BAND WIDTH, PDIP8, DIP-8
HCPL-7840-060E	AVAGO	获取价格	ISOLATION AMPLIFIER, 3750 V ISOLATION-MIN, 100 kHz BAND WIDTH, PDIP8, ROHS COMPLIANT, DIP-
HCPL-7840-300	AVAGO	获取价格	ISOLATION AMPLIFIER, 3750V ISOLATION-MIN, 100kHz BAND WIDTH, PDSO8, SMT-8
HCPL-7840-300E	AVAGO	获取价格	Isolation Amplifi er
HCPL-7840-360E	AGILENT	获取价格	Isolation Amplifier, 1 Func, CMOS, PDSO8,
HCPL-7840-500	AVAGO	获取价格	ISOLATION AMPLIFIER, 3750V ISOLATION-MIN, 100kHz BAND WIDTH, PDSO8, SMT-8
HCPL-7840-500E	AVAGO	获取价格	Isolation Amplifi er
HCPL-7840-560E	AVAGO	获取价格	Isolation Amplifier
HCPL-7850	AVAGO	获取价格	Hermetically Sealed Analog Isolation Amplifi er
HCPL-7850	AGILENT	获取价格	Hermetically Sealed Analog Isolation Amplifier

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