ACS37610H中文资料ALLEGRO数据手册PDF规格书

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.