FEATURES AND BENEFITS
Eliminates need for concentrator core or shield
• Contactless, lossless, noninvasive current sensing
• Suited for applications where current flows through
busbar or PCB
• High operating bandwidth: DC to 200 kHz
• Overcurrent (OCF) and overtemperature (OTF)
detection on fault pin
• Differential Hall sensing rejects common-mode
magnetic fields
• Very fast response time (<2 μs typical)
• Very high sensitivity (40 to 60 mV/G)
□ Ideal for sensing currents on a PCB from 50 A
• Factory-programmed segmented linear temperature
compensation (TC) provides low thermal drift
□ Sensitivity ±1% (typical)
□ Offset ±3 mV (typical)
• Customer-programmable, high-resolution offset and
sensitivity trim
• Wide Hall-element spacing for improved SNR and
thermal performance
• Ultra-sensitive Hall elements for improved noise
performance
Wide ambient temperature range: –40°C to 150°C
• 3.3 or 5 V single-supply operation
• Programmable through output pin or through dedicated
programming pin for easier device programming
• AEC-Q100 Grade 0, automotive qualified
• Monolithic Hall IC for high reliability
• Surface-mount, small-footprint, low-profile
TSSOP8 package
DESCRIPTION
The Allegro ACS37610H current sensor IC enables low-cost
solutions for AC and DC current sensing without the need for
an external field concentrator core or a U-shaped magnetic
shield. It is designed for applications where hundreds of amps
or more flow through a busbar or PCB.
Current flowing through a busbar or PCB trace generates a
magnetic field that is sensed by the monolithic, low-offset, linear
Hall IC. The differential sensing topology virtually eliminates all
types of errors due to common-mode stray magnetic fields. The
wide spacing between the differential Hall elements (2.58 mm)
coupled with the increased sensitivity of each Hall element enable
the ACS37610H to achieve superior signal to noise (SNR) and
improved resolution. While not mandatory, a notch or slit in the
current-carrying busbar or PCB copper trace provides further
improvements to system SNR. High isolation is achieved via
the no-contact nature of this simple assembly.
The ACS37610H is offered with regular and low-power
modes, enabling customers to achieve optimal SNR and power
consumption. A dedicated user-programmable overcurrent and
overtemperature fault pin and a slew of built-in diagnostics,
including broken ground and VCC detection, make it ideal for
safety-critical applications. The accuracy and flexibility of this device
is enhanced by user programmability, performed via the output pin or
through the dedicated programming pin, which allows the device to
be optimized in the application and cancels errors due to mechanical
assembly tolerances on the PCB. Device specifications apply across
an extended ambient temperature range: –40°C to 150°C.
The ACS37610H is suitable for space-constrained applications
because of its low-profile 8-pin surface-mount thin-shrink smalloutline package (TSSOP; Allegro suffix LU) that is lead (Pb) free,

with 100% matte tin leadframe plating. The sensor can be mounted
in a horizontal or vertical orientation relative to the busbar, providing
superior flexibility in mechanical assemblies.