 Features

 Supply range:

− Single power supply: 2.5 V to 6.0 V

− Common-mode range: -2 V to 40 V

 Low offset voltage: ±3 μV (Typ)

 Low input bias currents, IB: 1 nA (Typ)

 Quiescent current: 75 μA (Typ)

 Accuracy：

− Gain error: ±1% (Max)

− Offset drift: 0.5 μV/°C (Max)

− Offset voltage: ±50 μV (Max)

− Gain drift: 10 ppm/°C (Max)

 Common-mode rejection ratio: 150 dB (Typ)

 Bidirectional current sensing capability

 Choice of gain：

− DIO2186A: 25 V/V

− DIO2186B: 50 V/V

− DIO2186C: 100 V/V

− DIO2186D: 200 V/V

− DIO2186E: 500 V/V

 Input voltage noise: 77 nV/√Hz

 Applications

 Body control module (BCM)

 Telematics control unit

 Emergency call (eCall)

 12 V battery management system (BMS)

 Automotive head unit

 Description

The DIO2186 is a bidirectional and high-precision

voltage output current sense amplifie. It can be used

as high side or low side current monitor in automotive

electronics. The DIO2186 sense drops across shunts

independent of the supply voltage. This device

supports common-mode inputs from -2 V to 40 V,

making it ideal for current sensing of inductive loads

in automotive applications. The DIO2186 boasts an

ultra-low input bias current of only 1 nA that enables

the use of larger shunt resistors, providing accurate

current measurements even in the micro-amp range.

Its high-precision performance includes a low offset

voltage and gain error less than ±1%. The DIO2186

operates from a single 2.5 V to 6.0 V power supply.

With bidirectional current sensing capability, DIO2186

offers three fixed gain options: 25 V/V, 50 V/V, 100

V/V, 200 V/V, 500 V/V. The devices are specified

over ambient temperature range from -40°C to 125°C,

which makes it a perfect solution for automotive

applications.