 Features

 AEC-Q100 qualified

− Device ambient temperature:

− -40°C ≤ TA ≤ 125°C

− Device junction temperature:

− -40°C ≤ TJ ≤ 150°C

 Enhanced PWM rejection

 Wide supply range:

− Single power supply: 2.7 V to 5.5 V

− Common-mode range: -4 V to 110 V

 Accuracy：

− Low input offset voltage: ±5 μV (Typ)

− Offset drift: 50 nV/°C (Typ)

− Gain error: ±0.05%

− Gain drift: ±0.5 ppm/°C (Typ)

 Unity gain bandwidth:

− 400 kHz (DIA2240A)

− 360 kHz (DIA2240B)

− 360 kHz (DIA2240C)

 Choice of gain：

− DIA2240A: 20 V/V

− DIA2240B: 50 V/V

− DIA2240C: 100 V/V

− DIA2240D: 200 V/V

 Input voltage noise: 50 nV/√Hz

 Description

The DIA2240 device is an automotive qualified

voltage output and current sense amplifier with

enhanced PWM rejection. The device sense drops

across the shunt resistor over a wide common-mode

voltage range of -4 V to 110 V independent of the

operating supply. The device achieves ultra-high

precision current measurement accuracy under the

combination of features such as an ultra-low offset

voltage, a small gain error, and a high DC CMRR.

The enhanced PWM rejection function provides a

high level of suppression of large common-mode

transients (ΔV/Δt) in systems that use pulse width

modulation (PWM) signals. With this feature, the

DIA2240 minimizes output interference and ringing

during common-mode conversion. The device

operates from a single power supply from 2.7 V to 5.5

V and consumes a low supply current. Four fixed

gains are available: 20 V/V, 50 V/V, 100 V/V, and 200

V/V.

The DIA2240 is available in TSSOP8 and SOIC-8

package. It is specified over ambient temperature

range of -40°C to 125°C, which meets the

requirements of automotive applications.

 Applications

 Electronic power steering

 Stability and traction control

 Motor and actuator control

 Solenoid and valve control