BD14210G-LA
電流檢測放大器
BD14210G-LA
電流檢測放大器
BD14210G-LA是一款電流檢測放大器IC。該產品是能夠保證向工業設備市場長期供應的產品，而且是非常適用於這些應用領域的產品。該產品通過2.7V〜5.5V的單電源供電，支持-0.2V〜+26V的寬範圍共模電壓，輸出模擬電壓。檢測放大器的增益為20V/V。通過增益匹配電阻將增益誤差降至更低，從而具有低失調的特點。輸入電流低至1µA(Typ)，無需誤差調整。
該產品內置電流檢測放大器(CSA)，可提供30A電流檢測的參考設計。
Product Detail
規格:
Sensor Type
Current Sensor
Supply Voltage (Min.)[V]
2.7
Supply Voltage (Max.)[V]
5.5
Operating Current (Typ.)[mA]
0.17
Common Mode Voltage (Min.)[V]
-0.2
Common Mode Voltage (Max.)[V]
26
Gain (Typ.)[V]
20
Gain Accuracy (Max.)[%]
±1
Operating Temperature (Min.)[°C]
-40
Operating Temperature (Max.)[°C]
125
Package Size [mm]
2.9x2.8 (t=1.25)
功能:
- Long Time Support Product for Industrial Applications.
- Wide Common Mode Voltage Range
- High Accuracy
- Low Offset Voltage
- Low Input Bias Current
Supporting Information
背景
近年來，越來越多的應用產品需要具備電流檢測功能。例如，若要改善馬達效率和檢測異常狀況，就需要提高電流檢測精度，同時還希望能縮小安裝面積。在傳統結構（運算放大器+Discrete元件）中，存在著元件精度波動和因溫度特性導致電流檢測精度下降、難以縮小安裝面積等課題。為了解決上述市場課題，ROHM利用長年累積的類比技術優勢，研發出更節省空間且能高精度檢測電流的產品「BD1421x-LA系列」。
概要
將「BD14210G-LA」匯集週邊電路、並連接分流電阻後，即可進行電流檢測。與傳統結構（運算放大器+ Discrete元件）相比，「BD14210G-LA」將元件數量從11個減少為3個，安裝面積可減少約46%（封裝：SSOP6）。另外，更在整體溫度範圍（－40℃～＋125℃）內實現了±1%高精度電流檢測。不僅如此，透過改善內部電路，即使在外部安裝了雜訊對策用RC濾波電路的情況下，電流檢測精度也不會受到影響，將有助減少應用設計工時。可支援的輸入電壓範圍也更廣（－0.2V～＋26.0V），非常適用於12V和24V電源應用的電流檢測。
應用範例
・工控設備：無線基地台、PLC、逆變器、充電器等
・家電：空氣清淨機、冰箱等
Reference Design / Application Evaluation Kit
-
- Reference Design - REFSENS003
- 30A Current Sensing with current sense Amplifier (CSA)
REFSENSE003 is a reference design with a current sense amplifier: BD14210G-LA and a shunt resistor: LTR50UZPFU, which can be considered for current measurement using a shunt resistor. Current measurement circuits are used in various devices for high-side/low-side current sense, overcurrent sense, and current control of motors. The reference designs of shunt resistors and current-sense amplifiers presented on this website can be used for various current measurements as a solution that offers both high accuracy and small area. Design data and reference boards are available for purchase. Please make use of them to reduce your design person-hours.
- Built-in 1ch current sense amplifier BD14210G-LA/shunt resistor LTR50.
- Achieves current sense accuracy of 1%
- Supports current sense up to 30A
- Connectable with AD converter BU79100G-LA-EVK-001
-
- Reference Design - REF66006
- LED Rear Lamp, Turn Lamp, Stop Lamp
By changing the lamp to LED, it reduces power consumption, increases brightness, improves visibility, and improves safety by lighting during the day. BD18333EUV-M is a 24-channel independently controllable LED driver that contributes to higher performance rear lamps.
Collaboration board with Shockley
Shanghai Shockley was established in October 2005, is a geared to the needs of China's electronics industry, based on the semiconductor chip, the application of technical services solutions for your business and products agent registered.Shockley has experienced technical research and development and marketing team, can be based on semiconductor chips, according to customer needs, to provide technical services and complete solutions, to help customers quickly and efficiently to complete product design.
