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Image shown is for reference only. Actual package may vary. Refer to the product data sheet for package details.

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Back to Hall Effect Latches and Switches

AH1815

Micropower Omnipolar Hall Effect Switch

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Description

The AH1815 is a low-sensitivity, micro-power Omnipolar Hall effect

switch IC, designed for portable and battery powered consumer

equipment for home appliance and industrial applications such as

smart-meter magnetic-tamper detection. Based on two sensitive Hall

effect plates and a chopper-stabilized architecture, the AH1815

provides a reliable solution over the whole operating range. To

support portable and battery powered equipment, the design has

been optimized to operate over the supply range of 2.5V to 5.5V and

consumes only 24μW with a supply of 3V.

The single open drain output can switch on with either a north or

south pole of sufficient strength. When the magnetic flux density (B)

perpendicular to the package is larger than operate point (Bop) the

output is switched on (pulled low). The output is turned off when

B becomes lower than the release point (Brp). The output will remain

off when there is no magnetic field.

Feature(s)

Omnipolar (north or south pole) Operation
Low Sensitivity
Single Open Drain Output
Micropower Operation
2.5V to 5.5V Operating Range
Chopper Stabilized Design Provides Superior Temperature Stability Minimal Switch Point Drift Enhanced Immunity to Stress
Good RF Noise Immunity
-40°C to +125°C Operating Temperature
ESD (HBM) > 6KV
Industry Standard SC59 Package
Totally Lead-Free & Fully RoHS Compliant
Halogen and Antimony Free. “Green” Device

Application(s)

Doors, Lids, Covers and Tray Position Detect Switches
Display Switch for Portable PCs and Tablets
On/Off Switch for PDAs and Digital Cameras
Liquid Level Detection for Coffee Machines
Smart Meters
Position, Proximity and Level Detection Contactless Switch in Battery Powered Consumer, Home Appliances and Industrial Applications

Product Specifications

Product Parameters

Compliance(Only Automotive supports PPAP)	Standard
AEC Qualified	No
Type	Omnipolar
Outputs	Single
Output Type	Open Drain
Active Output State (B > Bop)	Low
Inactive Output State (B < Brp)	High-Z
Operating Voltage (V)	2.5 to 5.5
Average Supply Current (mA)	0.008
Min Operating Point Bop (Bops +ve/ Bopn -ve) (Gauss)	255
Typ Operating Point Bop (Bops +ve/ Bopn -ve) (Gauss)	395
Max Operating Point Bop (Bops +ve/ Bopn -ve) (Gauss)	540
Min Release Point Brp (Brps +ve/ Brpn -ve) (Gauss)	230
Typ Release Point Brp (Brps +ve/ Brpn -ve) (Gauss)	335
Max Release Point Brp (Brps +ve/ Brpn -ve) (Gauss)	495
Operating Ambient Temperature (°C)	-40 to 125

Technical Documents

Recommended Soldering Techniques

TN1.pdf

Product Change Notices (PCNs)

A PCN may only apply to specific orderable part numbers in this datasheet. Please refer to the corresponding PCN to see the exact orderable part number(s) affected.

PCN #	Issue Date	Implementation Date	Subject
PCN-2512	2021-04-16	2021-07-16	Qualified Additional Assembly & Test (A/T) Site