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部品型式

ACS714LLCTR-20A-T

製品説明
仕様・特性

ACS714 Automotive Grade, Fully Integrated, Hall Effect-Based Linear Current Sensor IC with 2.1 kVRMS Voltage Isolation and a Low-Resistance Current Conductor Features and Benefits Description ▪ ▪ ▪ ▪ ▪ ▪ ▪ ▪ ▪ ▪ ▪ ▪ ▪ ▪ ▪ ▪ The Allegro® ACS714 provides economical and precise solutions for AC or DC current sensing in automotive systems. The device package allows for easy implementation by the customer. Typical applications include motor control, load detection and management, switch-mode power supplies, and overcurrent fault protection. Low-noise analog signal path Device bandwidth is set via the FILTER pin 5 μs output rise time in response to step input current 80 kHz bandwidth Total output error 1.5% typical, at TA = 25°C Small footprint, low-profile SOIC8 package 1.2 mΩ internal conductor resistance 2.1 kVRMS minimum isolation voltage from pins 1-4 to pins 5-8 5.0 V, single supply operation 66 to 185 mV/A output sensitivity Output voltage proportional to AC or DC currents Factory-trimmed for accuracy Extremely stable output offset voltage Nearly zero magnetic hysteresis Ratiometric output from supply voltage Operating temperature range, –40°C to 150°C TÜV America Certificate Number: U8V 06 05 54214 010 The device consists of a precise, low-offset, linear Hall circuit with a copper conduction path located near the surface of the die. Applied current flowing through this copper conduction path generates a magnetic field which the Hall IC converts into a proportional voltage. Device accuracy is optimized through the close proximity of the magnetic signal to the Hall transducer. A precise, proportional voltage is provided by the low-offset, chopper-stabilized BiCMOS Hall IC, which is programmed for accuracy after packaging. The output of the device has a positive slope (>VIOUT(Q)) when an increasing current flows through the primary copper conduction path (from pins 1 and 2, to pins 3 and 4), which is the path used for current sampling. The internal resistance of this conductive path is 1.2 mΩ typical, providing low power loss. The thickness of the copper conductor allows survival of the device at up to 5× overcurrent conditions. The terminals of Package: 8 pin SOIC (suffix LC) Continued on the next page… Approximate Scale 1:1 Typical Application +5 V 1 2 IP IP+ VCC IP+ VIOUT 8 7 VOUT CBYP 0.1 μF ACS714 3 4 IP– FILTER IP– GND 6 5 CF 1 nF Application 1. The ACS714 outputs an analog signal, VOUT . that varies linearly with the uni- or bi-directional AC or DC primary sampled current, IP , within the range specified. CF is recommended for noise management, with values that depend on the application. ACS714-DS, Rev. 9

ブランド

ALLEGRO

会社名

Allegro MicroSystems, LLC

事業概要

Allegro MicroSystems, LLC. - Allegro MicroSystems, LLC. は、高性能パワーおよびホール効果センサ集積回路の開発、製造、販売を手掛ける主要企業です。 Allegroの革新的なソリューションは、自動車市場の高成長を続けるアプリケーションに用いられており、オフィスオートメーション、産業用、民生/通信ソリューションにも重点的に取り組んでいます。 Allegroは米国マサチューセッツ州ウォーセスターに本社を置き、また世界各国に設計センター、アプリケーションセンター、販売サポートセンターを配置しています。

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