Datasheet > ACNT-H87B

ACNT-H87B

更新时间： 2024-11-26 01:12:23

品牌	Logo	应用领域
博通 - BOARDCOM		/
页数	文件大小	规格书
15页	1270K
描述
Precision Optically Isolated Voltage Sensor in a 15-mm Stretched SO-8 Package

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ACNT-H87B 数据手册

ACNT-H87B, ACNT-H87A, ACNT-H870

Precision Optically Isolated Voltage Sensor in a

15-mm Stretched SO-8 Package

Data Sheet

Description

Features

The ACNT-H87B/H87A/H870 voltage sensors are optical

isolation amplifiers designed specifically for voltage sensing. Its

2-V input range and high 1-G input impe-dance, makes it well

suited for isolated voltage sensing requirements in electronic

power converters applications including motor drives and

renewable energy systems. In a typical voltage sensing

implementation, a resistive voltage divider is used to scale the

DC-link voltage to suit the input range of the voltage sensor. A

differential output voltage that is proportional to the input

voltage is created on the other side of the optical isolation

barrier.



Advanced sigma-delta (–) modulation technology

Unity gain 1V/V, ±0.5% high gain accuracy (ACNT-H87B)

1-G input impedence

0 to 2V nominal input range

–±5 ppm/°C low gain drift

21 μV /°C offset voltage drift

0.1% non-linearity maximum

Active-high shutdown pin

100-kHz wide bandwidth

±-V to 5.5-V wide supply range for output side

–40°C to +110°C operating temperature range

15 kV/μs common-mode transient immunity

Compact, auto-insertable 15-mm Stretched SO-8 package

Safety and regulatory approvals:

For general applications, the ACNT-H87A (±1% gain tolerance)

and the ACNT-H870 (±±% gain tolerance) are recommended.

For high precision requirements, the ACNT-H87B (±0.5% gain

tolerance) can be used. The ACNT-H87B/H87A/H870 family

operates from a single 5V supply and provides excellent

linearity. An active-high shutdown pin is available, which

—

IEC/EN/DIN EN 60747-5-5: 2262 V working

peak

insulation voltage

reduces the I

current to only 15 μA, making them suitable

DD1

for battery-powered and other power-sensitive applications.

—

UL 1577: 7500 V /1 min double protection rating

CSA: Component Acceptance Notice #5

rms

The high common-mode transient immunity (15 kV/μs) of the

ACNT-H87B/H87A/H870 provides the precision and stability

needed to accurately monitor DC-link voltage in high noise

environments. Combined with superior optical coupling

technology, the ACNT-H87B/H87A/H870 implements

sigma-delta (–) modulation, chopper stabilized amplifiers,

and differential outputs to provide unequaled isolation-mode

noise rejection, low offset, high gain accuracy and stability. This

performance is delivered in a compact, auto-insertable 15-mm

Stretched SO-8 (SSO-8) package that meets worldwide

regulatory safety standards.

Applications



Isolated voltage sensing in AC and servo motor drives

Isolated DC-bus voltage sensing in solar inverters, wind

turbine inverters

Isolated sensor interfaces

Signal isolation in data acquisition systems

General-purpose voltage 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.

Broadcom

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与ACNT-H87B相关器件

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