• –4V to 80V Wide Common-Mode Operation Range
• Voltage-Output, Current-Sense Amplifier
• Enhanced PWM Rejection
• Excellent CMRR:

--132dB DC CMRR

--93dB AC CMRR at 50kHz

• High Accuracy:

--Gain Error: 0.15% (Max)

--Gain Drift: 2.5ppm/℃ (Max)

• Low Offset Voltage:

--Offset Voltage: ±22μV (Max)

--Offset Drift: 250nV/℃ (Max)

• High Bandwidth: 550kHz
• Fixed Gain: 50V/V
• Quiescent Current: 2.4mA (Max)
• Package: TSSOP8
• MSL Rating: MSL3(SOP8)

The SQ52131 Series are fixed-gain, high-speed, high precision, high-side or low-side bidirectional current-sense amplifier with a voltage output. It operates over a wide common-mode voltage range of –4V to 80V, independent of the supply voltage. The negative common-mode voltage allows the device to operate below ground. Enhanced PWM rejection makes the SQ52131 Series suitable for current sensing and overcurrent protection in switching systems with large common-mode voltage transients (high ΔV/Δt) at the device's inputs, such as motor control, DC/DC converters, and battery management systems.

The SQ52131 Series utilize zero-drift architecture. Its low input offset voltage (VOS) enables precise measurement of low-voltage drops. The device operates from a single 2.7V to 5.5V power supply and draws 1.8mA (typ.) quiescent current. 

The devices are available in SOP8 package and are specified over the extended industrial temperature range of -40°C to 125°C.