Current Sense Amplifier

The BD14210G-LA current sense amplifier. This is the product guarantees long time support in Industrial market. This device operates from a single 2.7V to 5.5V power supply. It has wide common mode voltage range from -0.2V to +26V, outputs analog voltage. The gain is 20V/V. The matched gain resistor minimizes gain error and realizes low offset voltage.The input bias current is 1µA(Typ) at typical condition.There is no need to adjust the gain error.

This product has the reference design which is 30A current sensing with a current sense amplifier (CSA).

Product Detail

Part Number | BD14210G-LATR
Status | Recommended
Package | SSOP6
Unit Quantity | 3000
Minimum Package Quantity | 3000
Packing Type | Taping
RoHS | Yes


Sensor Type

Current Sensor

Supply Voltage (Min.)[V]


Supply Voltage (Max.)[V]


Operating Current (Typ.)[mA]


Common Mode Voltage (Min.)[V]


Common Mode Voltage (Max.)[V]


Gain (Typ.)[V]


Gain Accuracy (Max.)[%]


Operating Temperature (Min.)[°C]


Operating Temperature (Max.)[°C]


Package Size [mm]

2.9x2.8 (t=1.25)

Find Similar


  • Long Time Support Product for Industrial Applications.
  • Wide Common Mode Voltage Range
  • High Accuracy
  • Low Offset Voltage
  • Low Input Bias Current

Supporting Information



The BD14210G-LA incorporates all required peripheral components. That simplifies current sensing by connecting a shunt resistor and a bypass capacitor. This reduces the number of components from eleven to just three compared to conventional configurations (operational amplifier + discrete components). Furthermore, it decreases the mounting area by 46% (SSOP6 package). Additionally, a highly accurate current detection of ±1% has been achieved over the entire temperature range (-40°C to +125°C). The internal circuitry prevents current detection accuracy to decrease even when an external RC filter circuit for noise suppression is added. That minimizes the number of man-hours required for design. The wide input voltage range (-0.2V to +26V) makes the BD14210G-LA ideal for current sensing applications operating from 12V/24V power supplies.

Mounting Area Comparison The new solution vs Conventional Configuration
Example of Current Sense Accuracy Comparison
of The new solution vs Conventional Configuration

Application Examples

• Industrial equipment: wireless base stations, PLC, inverters, chargers, etc.
• Consumer devices: air purifiers, refrigerators and more.

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


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