Description
The DIA2240 device is an automotive qualified high precision, bidirectional and zero-drift current sense amplifier with enhance PWN rejection. The device sense drops across the shunt resistor over a wide common-mode voltage range of -4 V to 110 V, which is independent of the operating supply. Depending on the REF pin’s configuration, the DIA2240 can be used for bidirectional current detection.
The device achieves ultra-high precision current measurement accuracy under the combination of features such as an ultra-low offset voltage of ±5 µV, a small gain error of ±0.05% and a high DC CMRR. Moreover 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 (such as motor control, solenoid control systems).

Advantage
DIA2240 has a common voltage of up to 110V, while most other competitors only have a common voltage of 80V.

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
− Wide Common-Mode Range: –4 V to 110 V
 Accuracy：
− Low input offset voltage: ±5 µV
− Offset drift: 50nV/ ̊C
− Gain error: ±0.05%
− Gain drift: 0.5 ppm/°C
 Unity Gain Bandwidth: 400 KHz
 Choice of gain：
− DIA2240A1: 20 V/V
− DIA2240A2: 50 V/V
− DIA2240A3: 100 V/V
− DIA2240A4: 200 V/V
 Input voltage noise: 50 nV/√Hz
 Low quiescent current：2mA


Applications
 Electronic Power Steering
 Stability and Traction Control
 Motor and Actuator Control
 Solenoid and Valve Control