ALLEGRO A1210 User Manual

A1210, A1211, A1212, A1213, and A1214

Continuous-Time Latch Family

The Allegro® A1210-A1214 Hall-effect latches are next generation replacements
for the popular Allegro 317x and 318x lines of latching switches. The A121x

Package LH, 3-pin Surface Mount

GND

3

1

2

VCC

VOUT

Package UA, 3-pin SIP

family, produced with BiCMOS technology, consists of devices that feature fast
power-on time and low-noise operation. Device programming is performed after
packaging, to ensure increased switchpoint accuracy by eliminating offsets that
can be induced by package stress. Unique Hall element geometries and low-offset
amplifiers help to minimize noise and to reduce the residual offset voltage nor­mally caused by device overmolding, temperature excursions, and thermal stress.

3

The A1210-A1214 Hall-effect latches include the following on a single silicon
chip: voltage regulator, Hall-voltage generator, small-signal amplifier, Schmitt
trigger, and NMOS output transistor. The integrated voltage regulator permits
operation from 3.8 to 24 V. The extensive on-board protection circuitry makes
possible a ±30 V absolute maximum voltage rating for superior protection in
automotive and industrial motor commutation applications, without adding
external components. All devices in the family are identical except for magnetic
switchpoint levels.

The small geometries of the BiCMOS process allow these devices to be pro­vided in ultrasmall packages. The package styles available provide magnetically
optimized solutions for most applications. Package LH is an SOT23W, a miniature
low-profile surface-mount package, while package UA is a three-lead ultramini
SIP for through-hole mounting. Each package is lead (Pb) free, with 100% matte
tin plated leadframes.

2

VCC

GND

VOUT

1

2

3

AB SO LUTE MAX I MUM RAT INGS

Supply Voltage, VCC..........................................30 V

Reverse-Supply Voltage, V
Output Off Voltage, V

OUT

Reverse-Output Voltage, V
Output Current, I

OUTSINK

Magnetic Flux Density, B.........................Unlimited

Operating Temperature
Ambient, T
Ambient, T

, Range E..................–40ºC to 85ºC

A

, Range L................–40ºC to 150ºC

A

Maximum Junction, T
Storage Temperature, T

A1210-DS

........................ –30 V

RCC

.................................. 30 V

..................... –0.5 V

ROUT

............................... 25 mA

........................165ºC

J(max)

.................. –65ºC to 170ºC

S

Features and Benefits

Continuous-time operation

– Fast power-on time

– Low noise

Stable operation over full operating temperature range

Reverse battery protection

Solid-state reliability

Factory-programmed at end-of-line for optimum performance

Robust EMC performance

High ESD rating

Regulator stability without a bypass capacitor

Allegro MicroSystems, Inc.
115 Northeast Cutoff, Box 15036
Worcester, Massachusetts 01615-0036 [phone]

www.allegromicro.com

A1210, A1211, A1212, A1213, and A1214

Continuous-Time Latch Family

Product Selection Guide

Part Number Packing* Mounting Ambient, T

A1210ELHLT-T 7-in. reel, 3000 pieces/reel 3-pin SOT23W surface mount

A1210EUA-T Bulk, 500 pieces/bag 3-pin SIP through hole

A1210LLHLT-T 7-in. reel, 3000 pieces/reel 3-pin SOT23W surface mount

A1210LUA-T Bulk, 500 pieces/bag 3-pin SIP through hole

A1211ELHLT-T 7-in. reel, 3000 pieces/reel 3-pin SOT23W surface mount

A1211EUA-T Bulk, 500 pieces/bag 3-pin SIP through hole

A1211LLHLT-T 7-in. reel, 3000 pieces/reel 3-pin SOT23W surface mount

A1211LUA-T Bulk, 500 pieces/bag 3-pin SIP through hole

A1212ELHLT-T 7-in. reel, 3000 pieces/reel 3-pin SOT23W surface mount

A1212EUA-T Bulk, 500 pieces/bag 3-pin SIP through hole

A1212LLHLT-T 7-in. reel, 3000 pieces/reel 3-pin SOT23W surface mount

A1212LUA-T Bulk, 500 pieces/bag 3-pin SIP through hole

A1213ELHLT-T 7-in. reel, 3000 pieces/reel 3-pin SOT23W surface mount

A1213EUA-T Bulk, 500 pieces/bag 3-pin SIP through hole

A1213LLHLT-T 7-in. reel, 3000 pieces/reel 3-pin SOT23W surface mount

A1213LUA-T Bulk, 500 pieces/bag 3-pin SIP through hole

A1214ELHLT-T 7-in. reel, 3000 pieces/reel 3-pin SOT23W surface mount

A1214EUA-T Bulk, 500 pieces/bag 3-pin SIP through hole

A1214LLHLT-T 7-in. reel, 3000 pieces/reel 3-pin SOT23W surface mount

A1214LUA-T Bulk, 500 pieces/bag 3-pin SIP through hole

*Contact Allegro for additional packing options.

–40ºC to 85ºC

–40ºC to 150ºC

–40ºC to 85ºC

–40ºC to 150ºC

–40ºC to 85ºC

–40ºC to 150ºC

–40ºC to 85ºC

–40ºC to 150ºC

–40ºC to 85ºC

–40ºC to 150ºC

A

BRP (Min) BOP (Max)

–150 150

–180 180

–175 175

–200 200

–300 300

Functional Block Diagram

VCC

Regulator

Terminal List

Name Description

VCC Connects power supply to chip 1 1

VOUT Output from circuit 2 3

GND Ground 3 2

To all subcircuits

Amp

Control

VOUT

OffsetGain

Trim

GND

Number

Package LH Package UA

A1210-DS

Allegro MicroSystems, Inc.
115 Northeast Cutoff, Box 15036
Worcester, Massachusetts 01615-0036 [phone]

www.allegromicro.com

2

A1210, A1211, A1212, A1213, and A1214

Continuous-Time Latch Family

OPERATING CHARACTERISTICS over full operating voltage and ambient temperature ranges, unless otherwise noted

Characteristic Symbol Test Conditions Min. Typ. Max. Units

Electrical Characteristics

Supply Voltage

1

Output Leakage Current I

Output On Voltage V

Power-On Time

Output Rise Time

Output Fall Time

2

3

3

Supply Current

Reverse Battery Current I

Supply Zener Clamp Voltage V

Supply Zener Current

Magnetic Characteristics

4

5

Operate Point B

Release Point B

Hysteresis B

1

Maximum voltage must be adjusted for power dissipation and junction temperature, see Power Derating section.

2

For VCC slew rates greater than 250 V/µs, and TA = 150°C, the Power-On Time can reach its maximum value.

3

CS =oscilloscope probe capacitance.

4

Maximum current limit is equal to the maximum I

5

Magnetic flux density, B, is indicated as a negative value for north-polarity magnetic fields, and as a positive value for south-polarity magnetic fields.
This so-called algebraic convention supports arithmetic comparison of north and south polarity values, where the relative strength of the field is indicated
by the absolute value of B, and the sign indicates the polarity of the field (for example, a –100 G field and a 100 G field have equivalent strength, but
opposite polarity).

V

CC

OUTOFF

OUT(SAT)IOUT

t

PO

t

r

t

f

I

CCON

I

CCOFF

RCC

Z

I

Z

OP

RP

HYS

Operating, TJ < 165°C 3.8 – 24 V

V

OUT

Slew rate (dVCC/dt) < 2.5 V/µs, B > BOP + 5 G or
B < BRP – 5 G

VCC = 12 V, R

VCC = 12 V, R

B > B

B < B

V

RCC

ICC = 10.5 mA; TA = 25°C 32 – – V

VZ = 32 V; TA = 25°C – – 10.5 mA

CC(max)

= 24 V, B < B

= 20 mA, B > B

RP

OP

– – 10 µA

– 215 400 mV

––4µs

= 820 Ω, CS = 12 pF – – 400 ns

LOAD

= 820 Ω, CS = 12 pF – – 400 ns

LOAD

OP

RP

– 4.1 7.5 mA

– 3.8 7.5 mA

= –30 V – – –10 mA

A1210

25 78 150

A1211 15 87 180

A1212 50 107 175

South pole adjacent to branded face
of device

A1213 80 – 200

A1214 140 – 300

A1210

–150 –78 –25

A1211 –180 –95 –15

A1212 –175 –117 –50

North pole adjacent to branded face
of device

A1213 –200 – –80

A1214 –300 – –140

A1210

50 155 –

A1211 80 180 –

A1212 100 225 350

– B

B

OP

RP

A1213 160 – 400

A1214 280 – 600

+ 3 mA.

G

G

G

G

G

G

G

G

G

G

G

G

G

G

G

A1210-DS

DEVICE QUALIFICATION PROGRAM

Contact Allegro for information.

EMC (Electromagnetic Compatibility) REQUIREMENTS

Contact Allegro for information.

Allegro MicroSystems, Inc.
115 Northeast Cutoff, Box 15036
Worcester, Massachusetts 01615-0036 [phone]

www.allegromicro.com

3

A1210, A1211, A1212, A1213, and A1214

Continuous-Time Latch Family

THERMAL CHARACTERISTICS may require derating at maximum conditions, see application information

Characteristic Symbol Test Conditions Value Units

Package Thermal Resistance

Package LH, minimum-K PCB (single layer, single-sided with
copper limited to solder pads)

R

θJA

Package LH, low-K PCB (single layer, double-sided with

0.926 in

2

copper area)

Package UA, minimum-K PCB (single layer, single-sided with
copper limited to solder pads)

Power Derating Curve

T

= 165ºC; ICC=I

25
24
23
22
21

(V)

20

CC

19
18
17
16

15
14
13
12
11
10

9

Maximum Allowable V

8
7
6
5
4
3
2

20 40 60 80 100 120 140 160 180

J(max)

Low-K PCB, Package LH
(R

= 110 ºC/W)

θJA

Minimum-K PCB, Package UA
(R

= 165 ºC/W)

θJA

Minimum-K PCB, Package LH
(R

= 228 ºC/W)

θJA

CC(max)

V

CC(max)

V

CC(min)

110 ºC/W

228 ºC/W

165 ºC/W

A1210-DS

Power Dissipation versus Ambient Temperature

1900
1800
1700
1600
1500
1400
1300

(mW)

D

Power Diss ipation, P

1200
1100
1000

900
800
700
600
500
400
300
200

Low-K PCB, Package LH

(R

θJA

Minimum-K P

(R

θ

JA

=165

Minim

u

(

R

θJA

=228

= 110 ºC/W)

CB, Pac

º

C

/W)

kag

eUA

m-K PCB, Package LH

ºC/

W

)

100

0

20 40 60 80 100 120 140 160 180

Temperature (°C)

Allegro MicroSystems, Inc.
115 Northeast Cutoff, Box 15036
Worcester, Massachusetts 01615-0036 [phone]

www.allegromicro.com

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