 Features

 AEC-Q100 qualified

− Device ambient temperature:

-40°C ≤ TA ≤ 125°C

− Device junction temperature:

-40°C ≤ TJ ≤ 150°C

 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：

− DIA2186A: 25 V/V

− DIA2186B: 50 V/V

− DIA2186C: 100 V/V

 Input voltage noise: 77 nV/√Hz

 Description

The DIA2186 is a bidirectional and high-precision

voltage output current sense amplifier designed to

meet the stringent AEC-Q100 standard. It can be

used as high side or low side current monitor in

automotive electronics. The DIA2186 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

DIA2186 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 DIA2186 operates from a single 2.5 V to

6.0 V power supply. With bidirectional current sensing

capability, DIA2186 offers three fixed gain options: 25

V/V, 50 V/V, 100 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.

 Applications

 Body control module (BCM)

 Telematics control unit

 Emergency call (eCall)

 12 V battery management system (BMS)

 Automotive head unit