A1183LUA-TL datasheet, PDF - EEWORLD Datasheet

Datasheet> All Categories > Analog mixed-signal IC> The signal circuit> A1183LUA-TL

A1183LUA-TL: DescriptionAnalog Circuit, 1 Func, BICMOS, PSIP3, ULTRA MINI, SIP-3; CategoryAnalog mixed-signal IC The signal circuit; File Size903KB，14 Pages; ManufacturerAllegro; Websitehttp://www.allegromicro.com/

Download Datasheet Parametric View All

A1183LUA-TL Overview

Analog Circuit, 1 Func, BICMOS, PSIP3, ULTRA MINI, SIP-3

A1183LUA-TL Parametric

Parameter Name	Attribute value
Is it Rohs certified?	incompatible
Maker	Allegro
Parts packaging code	SIP
package instruction	SIP,
Contacts	3
Reach Compliance Code	compliant
Analog Integrated Circuits - Other Types	ANALOG CIRCUIT
JESD-30 code	R-PSIP-T3
JESD-609 code	e0
length	4.105 mm
Number of functions	1
Number of terminals	3
Maximum operating temperature	150 °C
Minimum operating temperature	-40 °C
Package body material	PLASTIC/EPOXY
encapsulated code	SIP
Package shape	RECTANGULAR
Package form	IN-LINE
Peak Reflow Temperature (Celsius)	240
Certification status	Not Qualified
Maximum seat height	5.26 mm
Maximum supply voltage (Vsup)	24 V
Minimum supply voltage (Vsup)	3.8 V
surface mount	NO
technology	BICMOS
Temperature level	AUTOMOTIVE
Terminal surface	TIN LEAD
Terminal form	THROUGH-HOLE
Terminal pitch	1.27 mm
Terminal location	SINGLE
Maximum time at peak reflow temperature	NOT SPECIFIED
width	1.52 mm

Preview

Download Datasheet

View All

A1180 – A1184

Preliminary Data Sheet

PRELIMINARY DATA SHEET

SUBJECT TO CHANGE WITHOUT NOTICE

Two-Wire, Programmable, Chopper-Stabilized,

Unipolar Hall-Effect Switch

The A118X is a two-wire, unipolar, Hall-effect switch family designed

for use in high-temperature applications. This device uses a patented high

frequency chopper-stabilization technique on Allegro's new DABIC5

BiCMOS wafer fabrication process to achieve magnetic stability and to

eliminate offset inherent in single-element devices and from harsh-

application environments.

The A118X FAMILY of devices incorporates a programmability

function to allow for external trimming of the operate point.

The

programming is performed after final packaging of the sensor and

placement of the Single In-Line Package (SIP) into the application. This

advanced feature allows for optimization of sensor switching performance

by effectively accounting for variations caused by magnet and SIP

placement tolerances.

These devices provide on-chip transient protection. A zener clamp on

the power supply protects against over-voltage conditions on the supply

line.

The output of the A118X FAMILY, with the exception of the A1180/2,

will switch HIGH in the presence of a sufficiently large south-pole magnetic

field and will switch LOW with the removal of the field. The A1180/2 has

the opposite polarity as the others, switching LOW in the presence of a

sufficient magnetic field and HIGH with the removal of the field.

Two package styles provide a magnetically optimized package for

most applications. Suffix “LH” is a miniature low profile package for

surface-mount applications; suffix “UA” is a three-lead ultra-mini Single

Inline Package (SIP) for through-hole mounting.

Factory programmed versions also available, see A1140/42/43/45.

Programming software and/or hardware demonstration kits also available

see ASEK-01 on the Allegro web site, www.allegromicro.com.

See typical application drawing for UA pinning.

ABSOLUTE MAXIMUM RATINGS

Supply Voltage

……………………………………..

26.5 V

Reverse-Battery Voltage

………………………………………

-18 V

Magnetic Flux Density

B ……………………………………

Unlimited

Package Power Dissipation

ja,

UA………………………………….

206 °C/W

……………………………….….248

°C/W

Junction Temperature, T

………………..

+170°C

Operating Temperature Range, T

Suffix “E” …………….…….

- 40 °C to + 85 °C

Suffix “L” ………………….

- 40 °C to + 150 °C

Storage Temperature Range

…………………………

-65 °C to +170 °C

FEATURES / BENEFITS

♦

Chopper Stabilization

Extremely low switch-point drift

Low stress sensitivity

♦

One-time external programmability

Operate Point

♦

On-chip Protection

Supply transient protection

Robust ESD/EMC protection

Reverse-battery protection

♦

On-board Voltage Regulator

3.8 V to 24 V operation

Order by complete part number (i.e. A1182LUA).

The “LH”

PPD is based on a 0.062" thick FR4, single-sided board using 2 oz. copper, with a 0.55 mm

area of copper attached to the ground lead.

TWO-WIRE, PROGRAMMABLE, UNIPOLAR HALL-EFFECT SWITCH FAMILY

(PRELIMINARY INFORMATION – SUBJECT TO CHANGE)

Functional Description

Chopper-Stabilization Technique.

A limiting factor for switch point accuracy when using Hall effect technology is the

small signal voltage developed across the Hall plate. This voltage is proportionally small relative to the offset that can be

produced at the output of the Hall sensor. This makes it difficult to process the signal and maintain an accurate, reliable

output over the specified temperature and voltage range.

Chopper Stabilization is a unique approach used to minimize Hall offset on the chip. The Allegro patented technique;

dynamic quadrature offset cancellation, removes key sources of the output drift induced by temperature and package

stress. This offset reduction technique is based on a signal modulation-demodulation process. The undesired offset

signal is separated from the magnetically induced signal in the frequency domain through modulation. The subsequent

demodulation acts as a modulation process for the offset causing the magnetically induced signal to recover its original

spectrum at base band while the dc offset becomes a high frequency signal. Then, using a low-pass filter the signal

passes while the modulated dc offset is suppressed.

The chopper stabilization technique uses a 170 kHz high frequency clock. The Hall plate chopping occurs on each clock

edge resulting in a 340 kHz chop frequency. The high frequency operation allows for a greater sampling, which produces

higher accuracy and faster signal processing capability. Using this chopper stabilization approach, the chip is de-

sensitized to the effects of temperature and stress. This technique produces devices that have an extremely stable

quiescent Hall output voltage, is immune to thermal stress, and has precise recoverability after temperature cycling. This

technique is made possible through the use of a BiCMOS process which allows the use of low offset and low noise

amplifiers in combination with high-density logic integration and sample and hold circuits.

The repeatability of switching with a magnetic field is slightly affected using a chopper technique. Allegro’s high frequency

chopping approach minimizes the affect of jitter and makes it imperceptible in most applications. Applications that may

notice the degradation are those that require the precise sensing of alternating magnetic fields such as ring magnet speed

sensing. For those applications, Allegro recommends the “low jitter” family of digital sensors.

Regulator

Amplifier

Sample/

Hold

CLOCK

Hall Element

Concept of Dynamic Quadrature Offset Cancellation

Rev. 1.8 25 April 2003

Page 5

115 Northeast Cutoff, Box 15036

Worcester, Massachus etts 01615-0036 (508) 853-5000

Recommended Resources

Do you understand the camera-based ADAS system?

HT-2844 series (4 tone) circuit

Regulated power supply voltage divider circuit

FET AGC circuit giving 30dB gain range

STK435 power amplifier circuit

555 ten-way temperature patrol detection circuit circuit

Shortcut: A0 A1 A2 A3 A4 A5 A6 A7 A8 A9 AA AB AC AD AE AF AG AH AI AJ AK AL AM AN AO AP AQ AR AS AT AU AV AW AX AY AZ B0 B1 B2 B3 B4 B5 B6 B7 B8 B9 BA BB BC BD BE BF BG BH BI BJ BK BL BM BN BO BP BQ BR BS BT BU BV BW BX BY BZ C0 C1 C2 C3 C4 C5 C6 C7 C8 C9 CA CB CC CD CE CF CG CH CI CJ CK CL CM CN CO CP CQ CR CS CT CU CV CW CX CY CZ D0 D1 D2 D3 D4 D5 D6 D7 D8 D9 DA DB DC DD DE DF DG DH DI DJ DK DL DM DN DO DP DQ DR DS DT DU DV DW DX DZ

Popular Components