FEATURES AND BENEFITS
• Eliminates need for concentrator core or shield
• Contactless, lossless, non-invasive current sensing
• Suited for applications where current flows through
busbar or PCB
• High operating bandwidth: DC to 250 kHz
• Overcurrent (OCF) and Overtemperature (OTF)
detection on Fault Pin
• Differential Hall sensing rejects common-mode
magnetic fields
• Very fast response time (<2 μs typ)
• Wide sensing range (3 to 28 mV/G)
□ Ideal for sensing currents from 100 A to >4000 A
• Factory-programmed segmented linear temperature
compensation (TC) provides low thermal drift
□ Sensitivity ±1% (typ)
□ Offset ±3 mV (typ)
• Customer-programmable, high-resolution offset and
sensitivity trim
• Wide Hall elements 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 5.0 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 ACS37610 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 or thousands of
amps 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 ACS37610 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 the system’s SNR. High isolation is achieved
via the no-contact nature of this simple assembly.
The ACS37610 is offered with regular and low-power mode,
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 ACS37610 is suitable for space-constrained applications because
of its low-profile 8-pin surface mount TSSOP package (thin-shrink
small outline package, 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.