Datenblatt-pdf.com


3054 Schematic ( PDF Datasheet ) - Allegro MicroSystems

Teilenummer 3054
Beschreibung MULTIPLEXED TWO-WIRE HALL-EFFECT SENSOR ICs
Hersteller Allegro MicroSystems
Logo Allegro MicroSystems Logo 




Gesamt 12 Seiten
3054 Datasheet, Funktion
3054
MULTIPLEXED
TWO-WIRE
3054
HALL-EFFECT SENSOR ICs
LOGIC
12
3
Dwg. PH-005
Pinning is shown viewed from branded side.
ABSOLUTE MAXIMUM RATINGS
at TA = +25°C
Supply Voltage, VBUS . . . . . . . . . . . . . . 18 V
Magnetic Flux Density, B . . . . . . . Unlimited
Operating Temperature Range, TA
A3054KU . . . . . . . . . . . -40°C to +125°C
A3054SU . . . . . . . . . . . . -20°C to +85°C
Storage Temperature Range,
TS . . . . . . . . . . . . . . . . . -55°C to +150°C
Package Power Dissipation,
PD . . . . . . . . . . . . . . . . . . . . . . . 635 mW
MULTIPLEXED TWO-WIRE
HALL-EFFECT SENSOR ICs
The A3054KU and A3054SU Hall-effect sensors are digital mag-
netic sensing ICs capable of communicating over a two-wire power/
signal bus. Using a sequential addressing scheme, the device re-
sponds to a signal on the bus and returns the diagnostic status of the
IC, as well as the status of each monitored external magnetic field.
As many as 30 sensors can function on the same two-wire bus. This
IC is ideal for multiple sensor applications where minimizing the wiring
harness size is desirable or essential.
Each device consists of high-resolution bipolar Hall-effect switch-
ing circuitry, the output of which drives high-density CMOS logic
stages. The logic stages decode the address pulse and enable a
response at the appropriate address. The combination of magnetic-
field or switch-status sensing, low-noise amplification of the Hall-
transducer output, and high-density decoding and control logic is made
possible by the development of a new sensor DABiC™ (digital analog
bipolar CMOS) fabrication technology. The A3054SU is an improved
replacement for the original UGN3055U.
These unique magnetic sensing ICs are available in two tempera-
ture ranges; the A3054SU operates within specifications between
-20°C and +85°C, while the A3054KU is rated for operation between
-40°C and +125°C. Alternative magnetic and temperature specifica-
tions are available on special order. Both versions are supplied in
0.060" (1.54 mm) thick, three-pin plastic SIPs. Each device is clearly
marked with a two-digit device address (XX).
FEATURES
s Complete Multiplexed Hall-Effect ICs with
Simple Sequential Addressing Protocol
s Allows Power and Communication Over a
Two-Wire Bus (Supply/Signal and Ground)
s Up to 30 Hall-Effect Sensors Can Share a Bus
s Sensor Diagnostic Capabilities
s Magnetic-Field or Switch-Status Sensing
s Low Power of DABiC Technology Favors
Battery-Powered and Mobile Applications
s Ideal for Automotive, Consumer, and Industrial Applications
Always order by complete part number:
Part Number Operating Temperature Range
A3054KU-XX -40°C to +125°C
A3054SU-XX -20°C to +85°C
where XX = address (01, 02, … 29, 30).






3054 Datasheet, Funktion
3054
MULTIPLEXED
TWO-WIRE
HALL-EFFECT SENSOR ICs
FIGURE 3
BUS INTERCONNECTION
ADDRESS
RESET
ANALOG OUT
(POSITIVE) BUS SUPPLY
01 02
BUS RETURN
28
29 30
Dwg. EH-005
31 is designed to be inactive to allow for
further address expansion of the bus (to 62
maximum addresses). In order to repeat the
address cycle, the bus must be reset, as
shown in Figure 1, by bringing the supply
voltage to below VRST. Sensors have been
designed not to ‘wrap-around’.
Magnetic Sensing
The sensor IC has been designed to
respond to an external magnetic field whose
magnetic strength is greater than BOP. It
accomplishes this by amplifying the output of
an on-chip Hall transducer and applying it to
a threshold detector. In order that bus
current is kept to a minimum, the transducer
and amplification circuitry is kept powered
down until the sensor is addressed. Hence,
the magnetic status is evaluated only when
the sensor is addressed.
External Switch Sensing
Pin 3 of the IC may be used to detect the
status of an external switch when magnetic
field sensing is not desired (and in the
absence of a magnetic field). The allowable
states for the switch are ‘open’ or ‘closed’
(shorted to sensor ground).
APPLICATIONS NOTES
Magnetic Actuation
The left side of Figure 2 shows the wiring of an A3054KU or
A3054SU when used as a magnetic threshold detector. Pin 1 of the
sensor is wired to the positive terminal of the bus, pin 2 is connected to
the bus negative terminal, and pin 3 has no connection.
Mechanical Actuation
The right side of Figure 2 shows the wiring of an A3054KU or
A3054SU when used to detect the status of a mechanical switch.
In this case, pin 3 is connected to the switch. The other side of the
switch is connected to the bus return (negative bus supply or ground).
When the mechanical switch is closed, and the correct bus address is
detected by the IC, the sensor responds with a signal current. If the
switch is open, only the diagnostic current is returned.
Bus Configuration
A maximum of 30 individually addresable sensors may be con-
nected across the same two-wire bus as shown in Figure 3. It is
recommended that the sensors use a dedicated digital ground wire to
minimize the effects of changing ground potential (as in the case of
chassis ground in the automotive industry).
The bus was not designed to require two-wire twisted pair wiring to
the sensors. However, in areas of extreme electromagnetic interfer-
ence, it may be advisable to install a small bypass capacitor (0.01 µF
for example) between the supply and ground terminals of each sensor
instead of using the more expensive wiring.
115 Northeast Cutoff, Box 15036
Worcester, Massachusetts 01615-0036 (508) 853-5000

6 Page









3054 pdf, datenblatt
3054
MULTIPLEXED
TWO-WIRE
HALL-EFFECT SENSOR ICs
HALL-EFFECT SENSORS SELECTION GUIDE
Partial Part
Number
Avail. Oper. ␣ Operate Limits Over Temp.␣
Temp.
BOP max BRP min Bhys min
Function†
Notes
3046
3054
3056
3058
3059
3060
3121
3122
3123
3132
3133
3134
3141
3142
3143
3144
3161
3175
3177
3185
3187
3188
3189
3195
3197
3235
3275
3421
3422
3503
3515
3516
3517
3518
3625
3626
5140
E/L
K/S
E/L
E/L
K/S
K/S
E/L
E/L
E/L
K/L/S
K/L/S
E/L
E/L
E/L
E/L
E/L
E
S
S
E/L
E/L
E/L
E/L
E/L
L
S
S
E/L
E/L
S
E/L
E/L
L/S
L/S
S
S
E
+200
-200
+300
+5
+225
-225
+300
-300
+100
-100
+35 -35
+500
+80
+430
+120
+470
+160
+95 -95
+75 -75
+50 -40
+175
+10
+245
+60
+355
+150
+450
+25
+160
+30
+180
-180
+150
-150
+300
-300
+175
-175
+200
-200
+250
-250
+200
-200
+200
-200
+200
+15
-200
-15
+250
-250
+300
-300
+85 -85
Typ. 1.3 mV/G
Typ. 5.0 mV/G
Typ. 2.5 mV/G
Typ. 5.0 mV/G
Typ. 2.5 mV/G
+150
-150
+150
-150
+240
+25
15
5.0
15
150
20
10
60
70
70
30
30
10
20
30
30
20
5.0
80
50
280
100
160
100
110
110
15
15
100
240
10
200*
200*
20
Gear-Tooth Sensor
Unipolar Multiplex
1
Gear-Tooth Sensor
Gear-Tooth Sensor
AC Gear-Tooth Sensor
AC Gear-Tooth Sensor
Unipolar Switch
Unipolar Switch
Unipolar Switch
Bipolar Switch
Bipolar Switch
Bipolar Switch
Unipolar Switch
Unipolar Switch
Unipolar Switch
Unipolar Switch
2-Wire Unipolar Switch
Bipolar Latch
Bipolar Latch
Bipolar Latch
Bipolar Latch
Bipolar Latch
Bipolar Latch
Bipolar Latch
2, 3
Bipolar Latch
3
Unipolar Switch
4
Unipolar Switch
Bipolar Latch
5
Direction Detection
Direction Detection
Linear Sensor
Chopper-Stabilized Linear Sensor
Chopper-Stabilized Linear Sensor
Chopper-Stabilized Linear Sensor
Chopper-Stabilized Linear Sensor
900 mA Bipolar Latch
3, 5, 6
400 mA Bipolar Latch
3, 5, 6
300 mA Unipolar Switch
3, 6
Operating Temperature Ranges:
C = 0°C to +70°C, S = -20°C to +85°C, E = -40°C to +85°C, K = -40°C to +125°C, L = -40°C to +150°C
Notes 1. Multiplexed two-wire sensor; after proper address, power/signal bus current indicates magnetic field condition.
2. Active pull down.
3. Protected.
4. Output 1 switches on south pole, output 2 switches on north pole for 2-phase, bifilar-wound, unipolar-driven brushless dc motor control.
5. Complementary outputs for 2-phase bifilar-wound, unipolar-driven brushless dc motor control.
6. Power driver output.
* Typical.
† Latches will not switch on removal of magnetic field; bipolar switches may switch on removal of field but require field reversal for reliable operation
over operating temperature range.
115 Northeast Cutoff, Box 15036
Worcester, Massachusetts 01615-0036 (508) 853-5000

12 Page





SeitenGesamt 12 Seiten
PDF Download[ 3054 Schematic.PDF ]

Link teilen




Besondere Datenblatt

TeilenummerBeschreibungHersteller
3050PTPhase Control ThyristorsnELL
nELL
3052-xxxPC BOard Mountable AccelerometerIC Sensors
IC Sensors
3052P SI-3052PSanken electric
Sanken electric
3054MULTIPLEXED TWO-WIRE HALL-EFFECT SENSOR ICsAllegro MicroSystems
Allegro MicroSystems
3055MULTIPLEXED TWO-WIRE HALL-EFFECT SENSOR ICsAllegro MicroSystems
Allegro MicroSystems

TeilenummerBeschreibungHersteller
CD40175BC

Hex D-Type Flip-Flop / Quad D-Type Flip-Flop.

Fairchild Semiconductor
Fairchild Semiconductor
KTD1146

EPITAXIAL PLANAR NPN TRANSISTOR.

KEC
KEC


www.Datenblatt-PDF.com       |      2020       |      Kontakt     |      Suche