Datasheet > ATS660LSB_06

ATS660LSB_06

更新时间： 2022-04-23 23:00:11

品牌	Logo	应用领域
急速微 - ALLEGRO		传感器
页数	文件大小	规格书
17页	194K
描述
True Zero Speed Hall Effect Adaptive Gear Tooth Sensors

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ATS660LSB_06 数据手册

ATS660LSB

TRUE ZERO-SPEED,

HALL-EFFECT ADAPTIVE

GEAR-TOOTH SENSOR

APPLICATIONS INFORMATION — Continued

SUPPLY

OUTPUT

Operation from a regulated power supply. These

devices require minimal protection circuitry during

operation from a low-voltage regulated line. The on-chip

voltage regulator provides immunity to power supply

variations between 4.5V and 26.5V. However, even

while operating from a regulated line, some supply and

output filtering is required to provide immunity to coupled

and injected noise on the supply line. A basic RC low-

100 pF

20 Ω

0.1 µF

Vcc

pass circuit (R C ) on the supply line and an optional

1 1

output capacitor (C ) is recommended for operation in

noisy environments. Because the device has an

open-collector output, an output pull-up resistor (R ) must

be included either at the sensor output (pin 2) or by the

signal processor input.

Operation from an unregulated power supply. In

automotive applications, where the device receives its

power from an unregulated supply such as the battery, full

protection is generally required so that the device can

withstand the many supply-side transients. Specifications

for such transients vary between car manufacturers, and

protection-circuit design should be optimized for each

application.

Dwg. EH-008-7

Operation from regulated supply

OUTPUT

SUPPLY

100 pF

In the circuit shown, a standard protection circuit is

constructed using discrete components. The Zener diode

is used to provide over-voltage protection against load

dumps greater than about 40 V; for load dumps less than

about 40 V, the internal Zener is sufficient. The series

resistor (R ) provides current limiting and with the capaci-

tor (C ) no¹ise filtering. The Zener diode and current-

Vcc

limiting resistor should be sized for power dissipation

requirements. The series diode protects the external Zener

diode against reverse battery and provides protection

against transients greater than -24 V; it must be rated to

withstand the most negative transient. In many transmis-

sion applications there is already a Zener diode in the

TCU, and the diode and external Zener are not necessary.

Dwg. EH-008-6

Operation from unregulated supply

115 Northeast Cutoff, Box 15036

Worcester, Massachusetts 01615-0036 (508) 853-5000

1...8 9 101112 13 14...17

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