A19530LUCX-TN-FDMOCEJ-A

A19530

2

High Feature Three-Wire Hall-Effect

-

Transmission Speed and Direction Sensor IC

FEATURES AND BENEFITS

DESCRIPTION

TheA19530 is an optimized Hall-effect integrated circuit (IC)

thatprovidesauser-friendlysolutionfordirectiondetectionand

truezero-speeddigitalmagneticwheelorgeartoothsensing.The

smallpackagecanbeeasilyassembledandusedinconjunction

with a wide variety of magnetic wheels or back-biased with a

magnet for gear tooth sensing applications.

• Integrated diagnostics and certified safety design process

for ASIL B compliance

• Three-wire output pulse-width protocol supporting speed,

direction, and ASIL

• Advanced algorithms supporting vibration detection and

sudden air gap changes

• Ring magnet and ferrous target sensing

• Air gap independent switch points

• True zero-speed operation

• Integrated EMC capacitor in a single overmolded

miniature package

The IC employs patented algorithms for the special operational

requirements of automotive transmission applications. The

speed and direction of the target are communicated through a

variablepulse-widthoutputprotocol.TheA19530highvibration

immunityoptionpreventsdirectionpulsesfromoccurringunder

angularvibrationwithoutsacrificingmaximumairgapcapability,

whereasthenovibrationimmunityoptionallowsforcontinuous

directionpulseemissionundervibration.Theadvancedvibration

detection algorithm will systematically calibrate the sensor IC

on the initial teeth of true target rotation and not on vibration,

always providing an accurate signal in running mode.

• Robust test coverage capability with Scan Path and

IDDQ measurement

PACKAGE:

More classic output options such as speed only protocol,

representing target profile or fast direction change recognition

with reduced vibration immunity also complete the

programming panel of the A19530.

3-pin SIP (suffix UC)

Advanced signal processing, innovative algorithms, short/

open detection capability, andASIL B compliant design make

the A19530 an ideal solution for a wide range of speed and

direction sensing needs with diagnostic requirements.

Not to scale

This device is available in a lead (Pb) free 3-pin SIP package

with tin-plated leadframe.

VCC

REGULATOR

(Analog)

REGULATOR

(Digital)

OFFSET

ADJUST

FILTER

Hall Amp

AGC

ADC

OUT

OUTPUT

CONTROL

SYNCHRONOUS

DIGITAL CONTROLLER

OFFSET

ADJUST

FILTER

Hall Amp

AGC

ADC

GND

Figure 1: Functional Block Diagram

A19530-DS

September 13, 2018

MCO-0000493

High Feature Three-Wire Hall-Effect

Transmission Speed and Direction Sensor IC

A19530

SELECTION GUIDE*

Part Number

Packing

A19530LUCCTN-FOOOOEJ-A

A19530LUCCTN-FSIBCEJ-A

Tape and reel, 13-in. reel, 4000 pieces per reel

* Not all combinations are available. Contact Allegro sales for availability and pricing of custom

programming options

Conꢍigꢌration oꢉtions

A19530 L UCꢀ -ꢁN -

Aꢀꢜꢤ ꢖꢏꢎꢅꢎꢓꢎꢘ

-A ꢃ ASꢖL ꢉrotocol enaꢈled

ꢜꢈlanꢏꢝ ꢃ ASꢖL ꢉrotocol disaꢈled

ꢀꢁꢂꢃꢄꢅꢄꢆꢄꢅꢇ ꢈꢉ

SmCo

Ndꢅeꢆ

ꢂ

ꢃ

ꢄ

ꢃ

ꢊꢋꢁꢂꢌꢀꢍꢎꢏꢅ ꢐꢄꢑꢒꢂꢎꢃꢅꢄꢓ ꢔꢎꢏ 5 ꢕ ꢖꢗꢘꢘꢙꢚꢋ ꢕꢎꢘꢅꢑꢒꢁ

ꢇ

-

ꢃ

ꢇnaꢈles oꢉenꢊshort diagnostic caꢉaꢈility

No oꢉenꢊshort detection

ꢕꢄꢛꢏꢑꢅꢄꢎꢂ ꢜꢝꢝꢗꢂꢄꢅꢇ ꢌ ꢐꢄꢏꢁꢓꢅꢄꢎꢂ ꢉꢍꢑꢂꢒꢁ

C

L

H

ꢎ

ꢃ

No ꢋiꢈration immꢌnity ꢍor continꢌoꢌs direction detection

Lagged ꢋiꢈration ꢍlag ꢍor immediate direction change recognition

High ꢋiꢈration immꢌnity with non-direction ꢉꢌlses

Sꢉeed only oꢌtꢉꢌt withoꢌt ꢋiꢈration immꢌnity

ꢉꢑꢘꢄꢛꢏꢑꢅꢄꢎꢂ ꢖꢗꢘꢃꢁꢃ

ꢆ

P

ꢃ

ꢆlanꢏed, no oꢌtꢉꢌt dꢌring caliꢈration

Non ꢐirection Pꢌlses dꢌring caliꢈration

ꢎ ꢃ Sꢉeed only oꢌtꢉꢌt

ꢞꢁꢆꢁꢏꢃꢁꢌꢟꢎꢂꢙꢐꢄꢏꢁꢓꢅꢄꢎꢂ ꢖꢗꢘꢃꢁ ꢠꢄꢡꢅꢍ

N

ꢖ

M

ꢃ

Reꢋerse ꢑ 90 ꢒs, Non-ꢐirection ꢑ 1ꢓ0 ꢒs ꢔnarrowꢕ

Reꢋerse ꢑ 135 ꢒs, Non-ꢐirection ꢑ 3ꢗ0 ꢒs ꢔintermediateꢕ

Reꢋerse ꢑ 150 ꢒs, Non-ꢐirection ꢑ 3ꢗ0 ꢒs ꢔmediꢌmꢕ

ꢘ ꢃ Reꢋerse ꢑ 1ꢓ0 ꢒs, Non-ꢐirection ꢑ 3ꢗ0 ꢒs ꢔwideꢕ

Sꢉeed only oꢌtꢉꢌt

ꢎ

ꢃ

ꢟꢗꢝꢛꢁꢏ ꢎꢔ ꢖꢗꢘꢃꢁꢃ

S

ꢐ

ꢎ

ꢃ

Single, one ꢉꢌlse ꢉer tooth-ꢋalley ꢉair

ꢐꢌal, one ꢉꢌlse ꢉer each tooth and ꢋalley

Sꢉeed only oꢌtꢉꢌt

ꢞꢎꢅꢑꢅꢄꢎꢂ ꢐꢄꢏꢁꢓꢅꢄꢎꢂ

ꢅ

R

ꢃ

ꢅorward ꢉꢌlses emitted ꢍor ꢉin 1 to ꢉin 3 rotation

Reꢋerse ꢉꢌlses emitted ꢍor ꢉin 1 to ꢉin 3 rotation

ꢜꢂꢃꢅꢏꢗꢓꢅꢄꢎꢂꢃꢙ Pacꢏing tyꢉe

ꢖꢑꢓꢢꢑꢒꢁ ꢐꢁꢃꢄꢒꢂꢑꢅꢄꢎꢂꢣ ꢉꢎꢝꢋꢎꢂꢁꢂꢅ ꢀꢁꢅ

ꢊꢋꢁꢏꢑꢅꢄꢂꢒ ꢈꢁꢝꢋꢁꢏꢑꢅꢗꢏꢁ ꢞꢑꢂꢒꢁ

Aꢘꢘꢁꢒꢏꢎ ꢜꢡꢁꢂꢅꢄꢔꢄꢁꢏ ꢑꢂꢡ ꢐꢁꢆꢄꢓꢁ ꢈꢇꢋꢁ

ꢅor eꢀamꢉleꢙ A19530LUCCꢁN-RSNPHꢇꢄ-A

ꢘhere a conꢍigꢌration character is ꢌnsꢉeciꢍied, ꢚꢀꢛ will ꢈe ꢌsed. ꢅor eꢀamꢉle, -ꢀSNPLꢇꢄ aꢉꢉlies to ꢈoth Rotation ꢐirection

conꢍigꢌration ꢋariants.

2

Allegro MicroSystems, LLC

955 Perimeter Road

Manchester, NH 03103-3353 U.S.A.

www.allegromicro.com

High Feature Three-Wire Hall-Effect

Transmission Speed and Direction Sensor IC

A19530

ABSOLUTE MAXIMUM RATINGS

Characteristic

Symbol

V_CC

Notes

Refer to power Derating Section

Rating

27

Unit

V

Supply Voltage

Reverse Supply Voltage

Reverse Supply Current

Reverse Output Voltage

Output Sink Current

V_RCC

I_RCC

V_ROUT

I_OUT

–18

V

50

mA

V

–0.5

Open/Short detection disabled

25

mA

°C

Operating Ambient Temperature

Maximum Junction Temperature

Storage Temperature

T_A

–40 to 150

165

T_J(MAX)

T_stg

–65 to 170

V_S

V_PU

Pinout Diagram

R_S*

50 Ω

R_PU

Ejector pin

A19530

mark on

far side

C1

C2

R_OUT

*

1

VCC

3

OUT

Sensor

Output

50 Ω

C1

C2

1

2

3

2 GND

*For EMC enhancement

Figure 2: Typical Application Circuit

Note: For -xxxxxEx- option (Open/Short detection Enabled),

pull-up resistor value as noted in Operational Characteristics

Table.

Terminal List

Number

Name

Function

INTERNAL DISCRETE COMPONENT RATINGS

1

VCC

Supply voltage

Ground

Symbol

Characteristic

Nominal Capacitance

Rating

220

Unit

nF

2

3

GND

OUT

C1 (C_SUPPLY

)

Open drain output

C2 (C_OUT

)

4.7

nF

3

Allegro MicroSystems, LLC

955 Perimeter Road

Manchester, NH 03103-3353 U.S.A.

www.allegromicro.com

High Feature Three-Wire Hall-Effect

Transmission Speed and Direction Sensor IC

A19530

OPERATING CHARACTERISTICS: Valid through full operating and temperature ranges, unless otherwise noted

Characteristics

Symbol

Test Conditions

Min.

Typ. ^[1]

Max.

Unit

ELECTRICAL CHARACTERISTICS

Supply Voltage ^[2]

V_CC

V_CC(UV)

I_RCC

Operating; T_J< T_J(max), R_SUPPLY= 0 Ω

V_CC0 → 5 V or 5 → 0 V, R_SUPPLY= 0 Ω

V_CC= V_RCC(MAX)

4

–

8

24

3.95

0

V

Undervoltage Lockout

Reverse Supply Current

Supply Zener Clamp Voltage

Supply Zener Current

Supply Current

–10

27

–

mA

V

V_Zsupply

I_Z

I_CC= I_CC(MAX)+ 3 mA, T_A= 25°C, R_SUPPLY= 0 Ω

T_J< T_J(max), V_CC= 27 V

–

13

10

mA

I_CC

–

OUTPUT STAGE

Power-On State

POS

Connected as in Figure 2

High

875

–

-xxxxxEx- variant,

R_OUT= 0 Ω

4.75 V < V_PU< 5.25 V,

Output = Low,

1.45 kΩ ≤ R_PU≤ 3.4 kΩ

at sensor output in Figure 2

435

500

–

1115

1250

50

mV

Low Output Voltage

V_diag-Low

Z_Sat-Low

V_diag-High

I_OFF

-xxxxxEx- variant,

875

–

mV

Ω

R

_OUT= 50 Ω

I_SINK= 10 mA, Output

transistor ON, R_OUT= 0 Ω

Low Output Voltage Impedance

High Output Voltage

Open/short disabled

-xxxxxEx- variant,

R_OUT= 0 Ω

4.75 V < V_PU< 5.25 V,

Output = High,

1.45 kΩ ≤ R_PU≤ 3.4 kΩ

at sensor output in Figure 2

3735

3750

–

4125

–

4475

4500

10

mV

µA

-xxxxxEx- variant,

R

_OUT= 50 Ω

Output transistor OFF,

V_OUT= 24 V

Output Leakage Current

Open/Short disabled

Output Zener Clamp Voltage

Output Current Limit

V_ZOUT

I_LIM

I_OUT= 3 mA, T_A= 25°C

V_OUT= 12 V, T_J< T_J(max)

27

25

–

V

45

70

mA

R_PU= 1.5 kΩ, V_PU= 5 V, from

10% to 90%, R_OUT= 0 Ω

-xxxxxEx- variant

–

15

35

–

µs

Output Rise Time

Output Fall Time

t_{r(out-diag-ON)}

R_PU= 3.3 kΩ, V_PU= 5 V, from

10% to 90%, R_OUT= 0 Ω

-xxxxxEx- variant

Open/short disabled

-xxxxxEx- variant

Open/short disabled

1.5

0.5

–

4.5

2.5

–

µs

R_PU= 1.5 kΩ, V_PU= 5 V, from

90% to 10%, R_OUT= 0 Ω

–

t_f

2.5

1.5

R_PU= 3.3 kΩ, V_PU= 5 V, from

90% to 10%, R_OUT= 0 Ω

–

OUTPUT PULSE CHARACTERISTICS ^[3]

Pulse Width, Forward Rotation

t_w(FWD)

38

76

45

90

52

µs

-xxNxxxx- variant

-xxIxxxx- variant

-xxMxxxx- variant

-xxWxxxx- variant

-xxNPxxx- variant

104

156

173

207

Timing from start of falling

output transition to start of

rising output transition.

Pulse Width, Reverse Rotation

t_w(REV)

114

127

153

135

150

180

Measured pulse width

depends on circuit

configuration and

thresholds.

Pulse Width, Non-Direction

t_w(ND)

-xxIPxxx- variant,

-xxMPxxx- variant,

-xxWPxxx- variant

306

360

414

µs

^[1]Typical values are at T_A= 25°C and V_CC= 12 V. Performance may vary for individual units, within the specified maximum and minimum limits.

^[2]Maximum voltage must be adjusted for power dissipation and junction temperature; see Power Derating section.

^[3]Only applicable to direction detection options, S (Single) and D (Dual).

4

Allegro MicroSystems, LLC

955 Perimeter Road

Manchester, NH 03103-3353 U.S.A.

www.allegromicro.com

High Feature Three-Wire Hall-Effect

Transmission Speed and Direction Sensor IC

A19530

OPERATING CHARACTERISTICS (continued): Valid through full operating and temperature ranges, unless otherwise noted

Characteristics

Symbol

Test Conditions

Min.

Typ. ^[1]

Max.

Unit

PERFORMANCE CHARACTERISTICS

Operate Point

Release Point

B_OP

B_RP

% peak to peak

–

69

31

–

%

Minimum separation between channels as a

Switch Point Separation

B_DIFF(SP-SEP)percentage of signal amplitude at each switching

point; refer to Figure 5

20

–

%

-xSxxxxx- and -xOxxxxx- variant

0

–

12

6

kHz

Differential Input Signal

f_FWD

Frequency, Forward Rotation ^[4]

-xDxxxxx- variant

-xSNxxxx- variant

7

-xDNxxxx- variant

f_REV

3.5

4

Differential Input Signal

Frequency, Reverse Rotation ^[4]

-xSWxxxx- variant

-xDWxxxx- variant

2

-xSxPHxx- and -xSxPLxx- variant

f_ND

2.2

1.1

Differential Input Signal

Frequency, Non-Direction ^[4]

-xDxPHxx- and -xDxPLxx- variant

TEMPERATURE COEFFICIENT

-xxxxxxG- variant

–

0.04

0.13

–

%/°C

Sensitivity Temperature

Coefficient (TC)

T_C

-xxxxxxJ- variant

POWER-ON AND CALIBRATION

Power-On Time

t_PO

f_OP< 100 Hz

–

2

ms

-xxxxCxx- variant

1.5

< 2.5

T_CYCLE

-xxxxLxx- variant,

-xxxxHxx- variant;

B_DIFF(pk-pk)> 60 G,

B_DIFF(pk-pk)≤ 1500 G

Amount of target rotation

(constant direction)

following power-on until

first electrical output pulse

–

2

< 3.1

T_CYCLE

First Direction Output Pulse ^[6]

-xxxxLxx- variant,

-xxxxHxx- variant;

of either t_w(FWD)or t_w(REV)

Refer to Figure 3

;

–

2.5

1

< 4

T_CYCLE

30 G ≤ B_DIFF(pk-pk)

,

B_DIFF(pk-pk)≤ 60 G

Amount of target rotation

(constant direction)

following event until first

electrical output pulse of

-xxxxCxx- variant,

-xxxxLxx- variant

< 1.5

T_CYCLE

First Direction Pulse Output

Following Direction Change

N_CD

either t_w(FWD)or t_w(REV)

refer to Figure 3

;

-xxxxHxx- variant

-xxxxCxx- variant

1

–

2

1

< 3

T_CYCLE

Amount of target rotation

(constant direction)

< 2.5

T_CYCLE

First Direction Pulse Output

Following Running Mode

Vibration

following event until first

electrical output pulse of

-xxxxLxx- variant,

-xxxxHxx- variant

either t_w(FWD)or t_w(REV)

refer to Figure 3

;

1

2

< 3.5

T_CYCLE

^[4]Maximum operating frequency specified for output rise time t_r< 17 µs. Parameter determined by satisfactory separation of output pulses t_w. If end-

user can resolve smaller time between pulses with faster rise time, maximum frequency may be increased up to 12 kHz.

^[5]Power-On Time includes the time required to complete the internal automatic offset adjust. Part is then ready for peak acquisition.

^[6]Power-on frequency <200 Hz. Higher power-on frequencies may require more input magnetic cycles until directional output pulses are achieved.

5

Allegro MicroSystems, LLC

955 Perimeter Road

Manchester, NH 03103-3353 U.S.A.

www.allegromicro.com

High Feature Three-Wire Hall-Effect

Transmission Speed and Direction Sensor IC

A19530

OPERATING CHARACTERISTICS (continued): Valid through full operating and temperature ranges, unless otherwise noted

Characteristics

Symbol

Test Conditions

Min.

Typ. ^[1]

Max.

Unit

MAGNETIC CHARACTERISTICS

Differential Input Signal Range ^[7]

B_DIFF(pk-pk)Differential magnetic signal

30

–

1500

200

300

–

G

–

-xxxxCxx- variant,

-xxxxLxx- variant,

-xxxxHxx- variant

Magnitude valid on

differential magnetic

channels

–200

–300

0.6

Allowable User-Induced Offset

-xOOOOxx- variant

Single cycle-to-cycle variation, B_SEQ(n+1)/B_SEQ(n)

;

Allowable Differential Sequential

Signal Variation

no missed pulses (pulse variant), nor missed

edges (-xOOOOxx- variant); refer to Figure 4

B_SEQ(n+1)

B_SEQ(n)

/

Single cycle-to-cycle variation, B_SEQ(n+1)/B_SEQ(n)

;

Allowable Differential Sequential

Signal Variation

pulses count error but device can recover (pulse

variant) and possible missed edges but no flatline

(-xOOOOxx- variant); refer to Figure 4

0.35

–

VIBRATION IMMUNITY

-xxxxCxx- variant

0.5

1

1.0

–

T_CYCLE

Vibration immunity (Calibration)

Err_Vib(SU)

-xxxxLxx- and -xxxxHxx variant

-xxxxCxx- variant

–

none

–

Vibration Immunity

(Running Mode)

Err_Vib(RM)

-xxxxLxx- and -xxxxHxx variant

1

ASIL OUTPUT

Internal failure detected for

4.75 V < V_PU< 5.25 V,

ASIL Output Safe State

V_{ASIL_safe_low}R_OUT= 0 Ω,

1.45 kΩ ≤ R_PU≤ 3.4 kΩ,

-xxxxxEx- variant

–

5

180

–

mV

ms

at sensor output in Figure 2

Time In Safe State Before

Self-Reset

t_{w(ASIL_safe)}Connected as in Figure 2

^[7]Differential magnetic field is measured for Channel A (F1-F2) and Channel B (F2-F3) for pulse width variant and for Channel A' (F1-F3) for speed

only variant (-xOOOOxx- variant). Magnetic field is measured orthogonally to the front of the package. Refer to Figure 7 and package drawing.

6

Allegro MicroSystems, LLC

955 Perimeter Road

Manchester, NH 03103-3353 U.S.A.

www.allegromicro.com

High Feature Three-Wire Hall-Effect

Transmission Speed and Direction Sensor IC

A19530

Target

S

N

S

N

T_CYCLE

B_DIFF

B_DIFF= Differential Input Signal; the differential magnetic

flux sensed by the sensor

T

_CYCLE= Target Cycle; the amount of rotation that

moves one tooth (or north pole) and one valley

(or south pole) across the sensor

Figure 3: Deﬁnition of T_CYCLE

B_SEQ(n)

B_{SEQ(n + 1)}

B_SEQ(n+i), i ≥ 2

Figure 4: Diﬀerential Signal Variation

S

N

S

N

S

N

T_CYCLE

B_DIFF(SP)

B_DIFF(BOP)

(B_OP

)

Channel B

B_DIFF(pk-pk)

(B_RP

)

B_DIFF(BRP)

B_DIFF(SP)

Channel A

B_DIFF(SP)

B_DIFF(pk-pk)

B_DIFF(SP-SEP)

=

Figure 5: Deﬁnition of Switch Point Separation

7

Allegro MicroSystems, LLC

955 Perimeter Road

Manchester, NH 03103-3353 U.S.A.

www.allegromicro.com

High Feature Three-Wire Hall-Effect

Transmission Speed and Direction Sensor IC

A19530

FUNCTIONAL DESCRIPTION

Forward Rotation (see top panel in Figure 6): When the target

is rotating such that a tooth near the sensor IC (of -Fxxxxxx

variant) passes from pin 1 to pin 3, this is referred to as forward

rotation. This direction is opposite for the -Rxxxxxx variant.

Forward rotation is indicated by output pulse widths of t_w(FWD)

(45 μs typical).

Sensing Technology

The sensor IC contains a single-chip Hall-effect circuit that

supports a trio of Hall elements. These are used in differential

pairs to provide electrical signals containing information regard-

ing edge position and direction of target rotation. The A19530 is

intended for use with magnetic trigger wheels or ferromagnetic

targets if back-biased with a magnet.

Reverse Rotation (see bottom Figure 6): When the target is

rotating such that a tooth passes from pin 3 to pin 1, it is referred

to as reverse rotation for the -Fxxxxxx variant. Reverse rotation

is indicated by output pulse widths of t_w(REV)(90 μs typical for

-xxNxxxx variant, or 180 μs typical for -xxWxxxx variant).

After proper power is applied to the sensor IC, it is capable of

providing digital information that is representative of the mag-

netic features of a rotating target. The waveform diagrams in

Figure 7 present the automatic translation of the target profiles,

through their induced magnetic profiles, to the digital output

signal of the sensor IC.

Speed Only Protocol: When the A19530 is configured with

the -xOOOOxx- variant, the device directly outputs the digital

representation of the target from the master differential Channel

(Channel A' in Figure 7).

Direction Detection

The sensor IC compares the relative phase of its two differential

channels to determine which direction the target is moving. The

relative switching order is used to determine the direction, which

is communicated through the output protocol.

ꢀꢁꢂꢃꢄꢂꢅ ꢆꢁꢇꢄꢇꢈꢁꢉ

ꢄranded ꢅace

oꢁ UC Pacꢆage

N

S

N

S

N

Rotating ꢃarget

ꢀRing magnet or

ꢁerromagneticꢂ

Pin 1

Data Protocol Description

Pin 3

When a target passes in front of the device (opposite the branded

face of the package case), the A19530 generates an output pulse

for each pole pair of the target (-xSxxxxx variant). Speed infor-

mation is provided by the output pulse rate, while direction of

target rotation is provided by the duration of the output pulses.

The sensor IC can sense target movement in both the forward and

reverse directions.

ꢆꢊꢋꢊꢂꢌꢊ ꢆꢁꢇꢄꢇꢈꢁꢉ

ꢄranded ꢅace

oꢁ UC Pacꢆage

N

S

N

S

N

Rotating ꢃarget

ꢀRing magnet or

ꢁerromagneticꢂ

Pin 1

Pin 3

Figure 6: Target Rotation for –Fxxxxxx variant;

Rxxxxxx variant inverts detected direction of rotation

8

Allegro MicroSystems, LLC

955 Perimeter Road

Manchester, NH 03103-3353 U.S.A.

www.allegromicro.com

High Feature Three-Wire Hall-Effect

Transmission Speed and Direction Sensor IC

A19530

ꢆarget

N

S

N

Pacꢃage Case

ꢂranded ꢄace

Device Orientation to Target

Pacꢇage Case ꢀranded ꢃace

Device Orientation to Target

ꢀPin 1

Sideꢁ

ꢀꢆoꢇ ꢈiew oꢉ

Pacꢃage Caseꢁ

ꢀPin 3

Sideꢁ

ꢄ3

ꢄꢋ ꢊC

ꢄ1

ꢀꢁ

ꢂC

ꢂacꢃꢅiasing

Magnet

ꢅPin 3 Sideꢆ

ꢃ3

ꢃꢄ

ꢃ1

ꢅPin 1 Sideꢆ

Soꢍth Pole

Channel ꢂ

Channel A

ꢅꢊoꢋ ꢌiew oꢍ Channel ꢀ

Channel A

Pacꢇage Caseꢆ ꢎlement Pitch

ꢎlement Pitch

North Pole

Mechanical Position (Target moves past device pin 1 to pin 3)

ꢊarget

ꢊhis ꢋole

ꢆhis tooth

ꢅRadial Ring Magnetꢆ

sensed later

sensed earlier

sensed later

ꢀ

ꢁ

Target Magnetic Profile

ꢌꢂ

Channel

ꢐlement Pitch

Target Magnetic Profile

Channel

ꢎlement Pitch

ꢈꢀ

ꢉꢀ

IC Internal Differential Analog Signals, V_PROC

ꢀ_ꢁP

ꢂ_ꢎP

ꢀ_ꢁP

Channel A

ꢂ_RP

ꢂ_ꢎP

ꢀ_RP

ꢀ_ꢁP

Channel ꢂ

Channel ꢀ

ꢂ_RP

ꢀ_RP

Device Output Signal (pulse variant)

ꢈ_{ꢎUꢆꢀhighꢁ}

Device Output Signal (pulse variant)

ꢌ_{ꢁUꢊꢅhighꢆ}

ꢈ_{ꢎUꢆꢀlowꢁ}

ꢌ_{ꢁUꢊꢅlowꢆ}

ꢂ_ꢎP

Channel Aꢏ

ꢀ_ꢁP

Channel Aꢏ

ꢂ_RP

ꢀ_RP

Device Output Signal (-FOOOOxx- variant)

ꢈ_{ꢎUꢆꢀhighꢁ}

Device Output Signal (-FOOOOxx- variant)

ꢌ_{ꢁUꢊꢅhighꢆ}

ꢈ_{ꢎUꢆꢀlowꢁ}

ꢌ_{ꢁUꢊꢅlowꢆ}

Figure 7: The magnetic proﬁle reﬂects the features of the target,

allowing the sensor IC to present an accurate digital output

9

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High Feature Three-Wire Hall-Effect

Transmission Speed and Direction Sensor IC

A19530

Timing

ꢀorward Rotation

Reꢁerse Rotation

In speed only mode with forward direction (-FOOOOxx option),

the rising electrical edge occurs slightly before the sensed mag-

netic edge traverses the package branded face (Figure 8).

ꢀ

ꢁ

ꢂꢃtꢄꢃt

t

ꢅꢀorward Rotationꢆ

In pulse output protocol with forward direction (-FSxxLxx and

-FSxxHxx variants), the pulse appears at the output slightly

before the sensed magnetic edge traverses the package branded

face. This is true in both forward and reverse target rotation direc-

tion, but it must be noticed that the magnetic edge is opposite in

reverse direction (Figure 9).

ꢂꢃtꢄꢃt

ꢅReꢁerse Rotationꢆ

Figure 8: Output Protocol

(-FOOOxx- variant)

With the -xxxxCxx variant, the sensed mechanical edge that

stimulates output pulses is kept the same for both forward and

reverse rotation, resulting in having the pulse on same pole in

forward and reverse rotation (Figure 10). It must also be noticed

that in this mode, the pulse location may be different depending

on the power-up cycle conditions.

ꢀorward Rotation

Reꢁerse Rotation

ꢀ

ꢁ

∆fwd

t

_{wꢅꢀꢇꢈꢆ}ꢉ5 ꢊs

Direction Validation

t

ꢂꢃtꢄꢃt

ꢅꢀorward Rotationꢆ

For the -xxxxLxx and -xxxxCxx variants, following a direction

change in running mode, direction changes are immediately

transmitted to the output (Figure 11 and Figure 12).

∆rev

t_{wꢅRꢋꢌꢆ}

ꢂꢃtꢄꢃt

t

For the -xxxxHxx variant, following a direction change in run-

ning mode, output pulses have a width of t_w(ND)until direction

information is validated (Figure 13).

ꢅReꢁerse Rotationꢆ

Figure 9: Output Protocol

(-FSxxLxx & -FSxxHxx variants)

For the -xOOOOxx option, output transitions are emitted directly

after direction change event.

ꢀorward Rotation

Reꢁerse Rotation

ꢀ

ꢁ

∆fwd

_{wꢅꢀꢇꢈꢆ}ꢉ5 ꢊs

t

ꢂꢃtꢄꢃt

ꢅꢀorward Rotationꢆ

t_{wꢅRꢋꢌꢆ}

ꢂꢃtꢄꢃt

t

ꢅReꢁerse Rotationꢆ

Figure 10: Output Protocol (-FSxxCxx variant)

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High Feature Three-Wire Hall-Effect

Transmission Speed and Direction Sensor IC

A19530

Target Rotation Forward

Target Rotation Reverse

N

S

N

S

N

S

N

Target

Differential

Magnetic

Proﬁle

V_OUT

t_w(REV)

Figure 11: Example of running mode direction change (-FSxxLxx variant)

t_w(REV)

t_w(FWD)

t

Target Rotation Forward

Target Rotation Reverse

N

S

N

S

N

S

N

Target

Differential

Magnetic

Proﬁle

V_OUT

t_w(REV)

t

t_w(FWD)

Figure 12: Example of running mode direction change

(-FSxxCxx variant)

Target Rotation Forward

Target Rotation Reverse

N

S

N

S

N

S

N

Target

Differential

Magnetic

Proﬁle

V_OUT

t_w(ND)

t_w(REV)

t_w(FWD)

t

Figure 13: Example of running mode direction change

(-FSxxHxx variant)

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High Feature Three-Wire Hall-Effect

Transmission Speed and Direction Sensor IC

A19530

circuitry works with the AGC during calibration to adjust signal

to the A-to-D input range and allow for acquisition of signal

peaks. AOA and AGC function separately on the two differential

signal channels.

Start-Up Detection / Calibration

When power is applied to the A19530, the sensor IC internally

detects the profile of the target. The gain and offset of the detected

signals are adjusted during the calibration period, normalizing the

internal signal amplitude for the air gap range of the device.

Direction information is available after calibration is complete.

For the -xxxBxxx- variant, the output becomes active at the end

of calibration. For the -xxxPxxx- variant, output pulses of t_w(ND)

are supplied during calibration.

The Automatic Gain Control (AGC) feature ensures that opera-

tional characteristics are isolated from the effects of installation

air gap variation.

Figure 14 through Figure 16 show where the first output edge

may occur for various starting target phases.

Automatic Offset Adjustment (AOA) is circuitry that compen-

sates for the effects of chip, magnet, and installation offsets. This

ꢂarget Rotation

N

S

N

S

N

S

N

S

N

ꢂarget

ꢃiꢄꢄerential

Magnetic

Proꢄile

t_ꢉꢊꢋꢉꢃꢌ or

t_ꢉꢊRꢍꢀꢌ

t_ꢉꢊꢋꢉꢃꢌ or

t_ꢉꢊRꢍꢀꢌ

ꢁꢅꢅosite

north ꢅole

t_ꢉꢊꢋꢉꢃꢌ or

t_ꢉꢊRꢍꢀꢌ

t_ꢉꢊꢋꢉꢃꢌ or

t_ꢉꢊRꢍꢀꢌ

ꢁꢅꢅosite

N→S ꢆoꢇndary

t_ꢉꢊꢋꢉꢃꢌ or

t_ꢉꢊRꢍꢀꢌ

t_ꢉꢊꢋꢉꢃꢌ or

t_ꢉꢊRꢍꢀꢌ

ꢀ_ꢁUꢂ

ꢁꢅꢅosite

soꢇth ꢅole

t_ꢉꢊꢋꢉꢃꢌ or

t_ꢉꢊRꢍꢀꢌ

ꢁꢅꢅosite

t

S→N ꢆoꢇndary

ꢃeꢈice Location at Power-ꢁn

Figure 14: Start-up position eﬀect on ﬁrst device output switching (-xxxBHxx or -xxxBLxx variants)

ꢂarget Rotation

N

S

N

S

N

S

N

S

N

ꢂarget

ꢃiꢄꢄerential

Magnetic

Proꢄile

t_ꢉꢊNꢃꢌ

t

_ꢉꢊNꢃꢌ

t_ꢉꢊꢋꢉꢃꢌ or

t_ꢉꢊRꢍꢀꢌ

t_ꢉꢊꢋꢉꢃꢌ or

t_ꢉꢊRꢍꢀꢌ

ꢁꢅꢅosite

north ꢅole

t_ꢉꢊꢋꢉꢃꢌ or

t_ꢉꢊRꢍꢀꢌ

t_ꢉꢊꢋꢉꢃꢌ or

t_ꢉꢊRꢍꢀꢌ

t_ꢉꢊNꢃꢌ

ꢁꢅꢅosite

N→S ꢆoꢇndary

t_ꢉꢊꢋꢉꢃꢌ or

t_ꢉꢊRꢍꢀꢌ

t_ꢉꢊꢋꢉꢃꢌ or

t_ꢉꢊRꢍꢀꢌ

ꢀ

ꢁUꢂ

ꢁꢅꢅosite

soꢇth ꢅole

t_ꢉꢊꢋꢉꢃꢌ or

t_ꢉꢊRꢍꢀꢌ

t_ꢉꢊNꢃꢌ

ꢁꢅꢅosite

t

S→N ꢆoꢇndary

ꢃeꢈice Location at Power-ꢁn

Figure 15: Start-up position eﬀect on ﬁrst device output switching (-xxxPHxx or -xxxPLxx variants)

12

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High Feature Three-Wire Hall-Effect

Transmission Speed and Direction Sensor IC

A19530

ꢂarget Rotation

N

S

N

S

N

S

N

S

N

ꢂarget

ꢃiꢄꢄerential

Magnetic

Proꢄile

t_ꢉꢊꢋꢉꢃꢌ or

t_ꢉꢊRꢍꢀꢌ

t_ꢉꢊꢋꢉꢃꢌ or

t_ꢉꢊRꢍꢀꢌ

t_ꢉꢊꢋꢉꢃꢌ or

t_ꢉꢊRꢍꢀꢌ

ꢁꢅꢅosite

north ꢅole

t_ꢉꢊꢋꢉꢃꢌ or

t_ꢉꢊRꢍꢀꢌ

t_ꢉꢊꢋꢉꢃꢌ or

t_ꢉꢊRꢍꢀꢌ

t_ꢉꢊꢋꢉꢃꢌ or

t_ꢉꢊRꢍꢀꢌ

t_ꢉꢊꢋꢉꢃꢌ or

t_ꢉꢊRꢍꢀꢌ

t_ꢉꢊꢋꢉꢃꢌ or

t_ꢉꢊRꢍꢀꢌ

ꢁꢅꢅosite

N→S ꢆoꢇndary

t_ꢉꢊꢋꢉꢃꢌ or

t_ꢉꢊRꢍꢀꢌ

t_ꢉꢊꢋꢉꢃꢌ or

t_ꢉꢊRꢍꢀꢌ

ꢀ_ꢁUꢂ

ꢁꢅꢅosite

soꢇth ꢅole

t_ꢉꢊꢋꢉꢃꢌ or

t_ꢉꢊRꢍꢀꢌ

ꢁꢅꢅosite

t

S→N ꢆoꢇndary

ꢃeꢈice Location at Power-ꢁn

Figure 16: Start-up position eﬀect on ﬁrst device output switching (-xxxBCxx variant)

13

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High Feature Three-Wire Hall-Effect

Transmission Speed and Direction Sensor IC

A19530

vibration occurs, the output is blanked and no output pulses are

emitted for vibrations less than the specified vibration immunity.

Output pulses containing the proper direction information will

resume when direction information is validated on constant target

rotation.

Vibration Detection

Algorithms embedded in the IC’s digital controller detect the

presence of target vibration through analysis of the two magnetic

input channels.

For the -xxxxCxx variant, vibration detection algorithms are

activated in calibration only. Once the device exits calibration,

vibration detection algorithms are deactivated and any direction

change or vibration events are transmitted through the output

with continuous direction information.

For the -xxxxHxx variant, in the presence of vibration, output

pulses of t_w(ND)may occur or no pulses may occur, depending

on the amplitude and phase of the vibration. Output pulses have

a width of t_w(ND)until direction information is validated on con-

stant target rotation.

For the -xxxxLxx variant, any direction change post calibration

is immediately transmitted to the output, and if any subsequent

For the –xOOOOxx variant, in the presence of vibration, output

transitions representing target vibration profile may occur.

Normal ꢀarget Rotation

ꢃiꢄration

Normal ꢀarget Rotation

N

S

N

S

N

S

N

ꢀarget

ꢁiꢂꢂerential

Magnetic

Proꢂile

t_ꢅꢆꢇꢅꢁꢈ

t

_ꢅꢆꢇꢅꢁꢈ

t_ꢅꢆꢇꢅꢁꢈ

ꢉ or t_ꢅꢆRꢊꢃꢈ ꢋ

t_ꢅꢆꢇꢅꢁꢈ

ꢉ or t_ꢅꢆRꢊꢃꢈ ꢋ

Figure 17: Output Functionality in the presence of Running Mode Target Vibration (-xxxBCxx variant)

Normal Target Rotation

Vibration

Normal Target Rotation

N

S

N

S

N

S

N

Target

Differential

Magnetic

Profile

t

_W(FWD)

t_W(FWD)

[ or t_W(REV) ]

t_W(FWD)

[ or t_W(REV) ]

t

_W(REV)

[ or t_W(REV) ]

[ or t_W(FWD) ]

Figure 18: Output Functionality in the presence of Running Mode Target Vibration (-xxxBLxx variant)

14

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High Feature Three-Wire Hall-Effect

Transmission Speed and Direction Sensor IC

A19530

Normal Target Rotation

Vibration

Normal Target Rotation

N

S

N

S

N

S

N

Target

Differential

Magnetic

Profile

t_W(FWD)

[ or t_W(REV) ]

t_W(ND)

[ or t_W(REV) ]

...

t_W(FWD)

t

_W(FWD)

t_W(FWD)

t_W(ND)

[ or t_W(REV) ]

t

[ or t_W(REV) ]

Figure 19: Output Functionality in the presence of Running Mode Target Vibration (-xxxPHxx variant)

Diagnostic Capability

When diagnostic functionality is activated, the device continuously

Table 1: Output Open Short Diagnostic

External Event Type

monitors itself, from the signal chain to output levels and reports a

fault by driving the output to the safe state (low level) for a period

of time defined by t_{w(ASIL_safe)}. After this period of time, the device

will attempt to recover by self-reset. In case of permanent detectable

failure, the sequence is repeated indefinitely (see Figure 20).

Output Level

V_PU

Hard short between VCC and GND

Hard short between VCC and OUT

Hard short between OUT and GND

Open VCC

V_CC

GND

V_PU

Diagnostic option of A19530 allows for system failure detec-

tion such as short circuit or open wire. In such case, output goes

above or below normal operating voltage range (V_diag-Lowor

V_diag-High) depending on the failure mode.

Open OUT

V_PU

Open GND

V_PU

Table 1 summarizes the possible output states corresponding to

each of short or open wire events.

ꢀ

_sat-Highꢁꢀ_PUꢂ

ꢀ_diag-High

t_{ꢈꢉASꢃLꢊsaꢄeꢋ}

t_Pꢇ

t_{ꢈꢉASꢃLꢊsaꢄeꢋ}

ꢀ_diag-Low

ꢀ_{ASꢃL-Saꢄe-Low}ꢁꢅNꢆꢂ

ꢀꢁꢂꢃꢄꢅ ꢆꢇꢈꢂꢄꢉꢊꢁꢋꢌ

ꢍꢈꢂꢃꢄꢋꢈꢋꢉ ꢎꢄꢊꢅꢏꢂꢈ

Figure 20: ASIL Output behavior (-xxxxxEx- variant)

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High Feature Three-Wire Hall-Effect

Transmission Speed and Direction Sensor IC

A19530

POWER DERATING

The device must be operated below the maximum junction tem-

perature of the device, T_J(max). Under certain combinations of

peak conditions, reliable operation may require derating supplied

power or improving the heat dissipation properties of the appli-

cation. This section presents a procedure for correlating factors

affecting operating T_J. (Thermal data is also available on the

Allegro MicroSystems website.)

A worst-case estimate, P_D(max), represents the maximum allow-

able power level (V_CC(max), I_CC(max)), without exceeding

T_J(max), at a selected R_θJAand T_A.

Example:

Reliability for V_CCat T_A=150°C, estimated values based on pac-

kage UC, using single layer PCB.

The Package Thermal Resistance, R_θJA, is a figure of merit sum-

marizing the ability of the application and the device to dissipate

heat from the junction (die), through all paths to the ambient air.

Its primary component is the Effective Thermal Conductivity,

K, of the printed circuit board, including adjacent devices and

traces. Radiation from the die through the device case, R_θJC, is

a relatively small component of R_θJA. Ambient air temperature,

T_A, and air motion are significant external factors, damped by

overmolding.

Observe the worst-case ratings for the device, specifically:

R_θJA=270°C/W, T_J(max) =165°C, V_CC(max)= 24 V, and I_CC

10 mA.

=

Calculate the maximum allowable power level, P_D(max). First,

invert equation 3:

ΔT(max) = T_J(max) – T_A= 165°C – 150°C = 15°C

This provides the allowable increase to T_Jresulting from internal

power dissipation. Then, invert equation 2:

The effect of varying power levels (Power Dissipation, P_D), can

be estimated. The following formulas represent the fundamental

relationships used to estimate T_J, at P_D.

P_D(max) = ΔT(max) ÷R_θJA=15°C÷270°C/W=55.5mW

Finally, invert equation 1 with respect to voltage:

P_D= V_IN

I

(1)

×

IN

V_CC(est)= P_D(max) ÷ I_CC= 55.5mW÷10mA=5.55 V

ꢀ

ΔT = P_D

R

θJA

(2) The result indicates that, at T_A, the application and device can

×

dissipate adequate amounts of heat at voltages ≤V_CC(est)

.

T_J= T_A+ ΔT

(3)

Compare V_CC(est)to V_CC(max). If V_CC(est)≤ V_CC(max), then reli-

able operation between V_CC(est)and V_CC(max) requires enhanced

R_θJA. If V_CC(est)≥ V_CC(max), then operation between V_CC(est)and

V_CC(max) is reliable under these conditions.

For example, given common conditions such as: T_A= 25°C, V_CC

= 12 V, I_CC= 8 mA, and R_θJA= 270°C/W, then:

P_D= V_CC

I

= 12 V 8 mA = 96 mW

CC

×

ΔT = P_D

R

= 96 mW 270°C/W = 25.9°C

θJA

×

T_J= T_A+ ΔT = 25°C + 25.9°C = 50.9°C

THERMAL CHARACTERISTICS: May require derating at maximum conditions

Characteristic

Symbol

Test Conditions*

Value

Unit

Package Thermal Resistance

R_θJA

1-layer PCB with copper limited to solder pads

270

°C/W

*Additional thermal information available on the Allegro website.

16

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High Feature Three-Wire Hall-Effect

Transmission Speed and Direction Sensor IC

A19530

PACKAGE OUTLINE DRAWING

For Reference Only – Not for Tooling Use

(Reference DWG-0000409, Rev. 2)

Dimensions in millimeters – NOT TO SCALE

Dimensions exclusive of mold ﬂash, gate burs, and dambar protrusions

Exact case and lead conﬁguration at supplier discretion within limits shown

B

4×10°

+0.06

–0.05

4.00

1.ꢀ0 0.0ꢀ

0.58

F

1.42

C

R 0.20 All Corners

F1

F

1.80

F

Mold Ejector

Pin Indent

F2

+0.06

–0.07

4.00

F3

F

Branded

Face

4ꢀ°

A

0.2ꢀ REF

0.30 REF

0.8ꢀ 0.0ꢀ

0.42 0.0ꢀ

1.27 REF

XXXXX

Date Code

Lot Number

1

2

3

18.00 0.10

D

Standard Branding Reference View

12.20 0.10

+0.07

0.2ꢀ

Lines 1, 2, 3: max. 5 characters per line

–0.03

Line 1: 5-digit Part Number

Line 2: 4-digit Date Code

Line 3: Characters 5, 6, 7, 8 of

Assembly Lot Number

0.38 REF

0.25 REF

A

Dambar removal protrusion (12×)

0.8ꢀ 0.0ꢀ

B

C

D

E

F

Gate and tie burr area

Active Area Depth, 0.38 0.0ꢀ mm

+0.06

–0.07

1.80

Branding scale and appearance at supplier discretion

Molded Lead Bar for alignment during shipment

Hall elements (F1, F2, and F3); not to scale

E

R 0.30 All Corners

+0.06

–0.05

4.00

1.ꢀ0 0.0ꢀ

Figure 21: Package UC, 3-pin SIP

17

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High Feature Three-Wire Hall-Effect

Transmission Speed and Direction Sensor IC

A19530

Revision History

Number

Date

Description

–

September 13, 2018 Initial release

Allegro MicroSystems, LLC reserves the right to make, from time to time, such departures from the detail specifications as may be required to

permit improvements in the performance, reliability, or manufacturability of its products. Before placing an order, the user is cautioned to verify that

the information being relied upon is current.

Allegro’s products are not to be used in any devices or systems, including but not limited to life support devices or systems, in which a failure of

Allegro’s product can reasonably be expected to cause bodily harm.

The information included herein is believed to be accurate and reliable. However, Allegro MicroSystems, LLC assumes no responsibility for its

use; nor for any infringement of patents or other rights of third parties which may result from its use.

Copies of this document are considered uncontrolled documents.

For the latest version of this document, visit our website:

www.allegromicro.com

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型号：	A19530LUCX-TN-FDMOCEJ-A
厂家：	ALLEGRO MICROSYSTEMS
描述：	High Feature Three-Wire Hall-Effect Transmission Speed and Direction Sensor IC
文件：	总18页 (文件大小：807K)
中文：	中文翻译
下载：	下载PDF数据表文档文件

A19530LUCX-TN-FDMOCEJ-A [ALLEGRO]

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