AH1898 Series

Micropower Selectable threshold Omnipolar Hall Effect Switch

Catalog

Micropower Selectable threshold Omnipolar Hall Effect Switch

Part	Function	Current - Output (Max) [Max]	Output Type	Technology	Current - Supply (Max) [Max]	Mounting Type	Operating Temperature [Max]	Operating Temperature [Min]	Polarization	Sensing Range	Supplier Device Package	Package / Case	Voltage - Supply [Min]	Voltage - Supply [Max]
Diodes Inc AH1898-CA4-7	Omnipolar Switch	2.5 mA	Push-Pull	Hall Effect	8 µA	Surface Mount	85 °C	-40 °C	North Pole South Pole	Programmable	U-WLB0808-4	4-UFBGA WLBGA	1.6 V	3.6 V

Catalog

Micropower Selectable threshold Omnipolar Hall Effect Switch

Key Features

• Omnipolar Operation (North or South Pole)

• Programmable Operate and Release Points

• Supply Voltage of 1.6V to 3.6V

• Micropower Operation

• Chopper Stabilized Design Provides:Superior Temperature StabilityMinimal Switch Point DriftEnhanced Immunity to Physical Stress

• Superior Temperature Stability

• Minimal Switch Point Drift

• Enhanced Immunity to Physical Stress

• No External Pull-Up Resistors Required

• Good RF Noise Immunity

-40°C to +85°C Operating Temperature

• 8kV Human Body Model ESD Capability

• Miniature U-WLB0808-4/U-WLB0808-4 (Type A1) (CSP 0.81mm x 0.81mm typical)

• Totally Lead-Free & Fully RoHS Compliant (Notes 1 & 2)

• Halogen and Antimony Free. "Green" Device (Note 3)

• For automotive applications requiring specific change control (i.e. parts qualified to AEC-Q100/101/104/200, PPAP capable, and manufactured in IATF 16949 certified facilities), pleasecontact usor your local Diodes representative.https://www.diodes.com/quality/product-definitions/

Description

The AH1898 is a micropower magnetic range selectable (Bop/Brp) Omnipolar Hall-effect switch IC with internal pull up and pull down capability, designed for portable and battery powered consumer equipment such as cellular phones and portable PCs. To support battery powered equipment and low-voltage microcontrollers, the AH1898 can operate over the supply range of 1.6V to 3.6V and uses a hibernating clocking system to minimize the power consumption. The average supply current is only 4.3µA typical at 1.80V. The AH1898 has an 8kV ESD rating on the supply and output pins. To minimize PCB space the AH1898 is packaged in the small CSP package (0.81mm x 0.81mm typical).