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.