A1172

更新时间： 2024-11-15 04:02:43

品牌	Logo	应用领域
急速微 - ALLEGRO		开关
页数	文件大小	规格书
9页	237K
描述
Micropower Ultra-Sensitive Hall-Ef fect Switch

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A1172 数据手册

A1172

Micropower Ultra-Sensitive Hall-Effect Switch

Features and Benefits

Description

▪ Micropower operation

The A1172 is an ultra-sensitive, pole-independent Hall-effect

▪ Operation with either north or south pole—

no magnetic orientation required during assembly

▪ 1.65 to 3.5 V battery operation

▪ Chopper stabilization

switch with a latched digital output. It features operation at

low supply currents and voltages, making it ideal for battery-

operated electronics. The 1.65 to 3.5 V operating supply

voltage and unique clocking algorithm reduce the average

operating power requirements to less than 15 μW with a

2.75 V supply.

▫ Superior temperature stability

▫ Extremely low switchpoint drift

▫ Insensitive to physical stress

▪ Solid state reliability

The A1172 has two push-pull output structures. Omnipolar

activation for the output function is available on each output

structure. As such, either a north or south pole of sufficient

strength turns the available outputs off or on. The A1172

contains two complementary outputs. Therefore, for a fixed

magnetic field, one output will be in a high voltage state and

one output will be in a low voltage state.

▪ Small size: WLCSP (≈ 1 mm × 1 mm × 0.5 mm)

▪ Complementary, push-pull outputs eliminate need for

pull-up resistor

Package: 4 pin WLCSP (suffix CG)

Improved stability is made possible through dynamic offset

cancellation using chopper stabilization, which reduces the

residualoffsetvoltagenormallycausedbydeviceovermolding,

temperature dependencies, and thermal stress. This device

Continued on the next page…

Not to scale

Engineering samples available on a limited basis. Contact your local

sales or applications support office for additional information.

Functional Block Diagram

VDD

Clock/Logic

Amp

VOUTPS

Latch

Low-Pass

Filter

VOUTPN

Latch

GND

1172-DS

12 3 4 5 6 7...9

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