BD14220G-C
車用電流感測放大器
BD14220G-C
車用電流感測放大器
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Description
BD14220G-C是電流感測放大器系列產品。該元件由單一的2.7V至5.5V電源供電。它具有-14V至+40V的寬共模電壓範圍，輸出類比電壓。增益為25 V/V。匹配的增益電阻可最大程度地減少增益誤差和偏移電壓。此外，低輸入偏置電流為1μA，可減少並聯電阻路徑上的偏移。
Product Detail
Specifications
Sensor Type
Current Sensor
Supply Voltage (Min.)[V]
2.7
Supply Voltage (Max.)[V]
5.5
Operating Current (Typ.)[mA]
0.24
Common Mode Voltage (Min.)[V]
-14
Common Mode Voltage (Max.)[V]
40
Gain (Typ.)[V/V]
25
Gain Accuracy (Max.)[%]
±1
Operating Temperature (Min.)[°C]
-40
Operating Temperature (Max.)[°C]
125
Package Size [mm]
2.9x2.8 (t=1.25)
Common Standard
AEC-Q100 (Automotive Grade)
Features
- 符合AEC-Q100標準（Grade 1）
- 寬共模電壓範圍
- 高精度
- 低偏移電壓
- 低輸入偏置電流
Reference Design / Evaluation Tool
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- Evaluation Board - BD14220G-EVK-001
BD14220G-EVK-001 is an evaluation board for BD14220G-LA, which is ROHM's current sense amplifier.
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- Reference Design - REF68012
- 30A Shunt-based current sensing (uni-direction) with CSA on 24V system
In the automotive and industrial equipment fields, current sensing circuits are essential for applications such as current feedback, overcurrent limitation, and battery level monitoring. The shunt-based current sensing circuit is the most standard circuit for current measurement and monitoring. ROHM provides solutions that leverage the resistor technology it has developed since its founding, as well as the analog and thermal design technologies it has cultivated over many years, contributing to improved system performance, higher power efficiency, and higher reliability through high-precision current sensing.
The components you select will vary depending on the power supply system and detection current value. We have a lineup of reference designs for 12V, 24V, and 48V systems, as well as current sensing values from 20 to 100A. We publish not only the schematic design guide but also thermal evaluation data for shunt resistors. Thermal issues are an important factor in shunt-based current sensing. Please use these as design references to help reduce design man-hours.
This reference design is designed for 30A, uni-direction current sensing on 24V systems.
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