 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