 Features
 Enhanced PWM rejection
 Wide supply range:
− Single power supply: 2.7 V to 5.5 V
− Wide 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 (DIO2240A)
− 360 kHz (DIO2240B)
− 800 kHz (DIO2240E)
 Choice of gain：
− DIO2240E: 10 V/V
− DIO2240A: 20 V/V
− DIO2240B: 50 V/V
− DIO2240C: 100 V/V
− DIO2240D: 200 V/V
 Input voltage noise: 50 nV/√Hz
 Applications
 Electronic power steering
 Stability and traction control
 Motor and actuator control
 Solenoid and valve control
 Actuator controls
 Pressure regulators
 Description
The DIO2240 device is a 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
DIO2240 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: 10 V/V, 20 V/V, 50 V/V, 100 V/V,
and 200 V/V.
The DIO2240 is available in TSSOP-8, MSOP-8 and
SOIC-8 packages. It is specified over ambient
temperature range of -40°C to 125°C, which meets
the requirements of industry applications.