3046IC贸易商引脚图技术参数全新原装-中国IC网-芯三七

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产品型号3046的概述

芯片3046的概述芯片3046是一款集成电路，广泛应用于电子设备的控制和信号处理领域。作为一种通用功能芯片，3046在特定工作频率范围内的表现相对优秀，具有较高的稳定性和可靠性。这款芯片以其简便的使用和广泛的兼容性，受到设计工程师和开发者的青睐。 3046芯片通常被用于自动化控制、通信设备、音频设备等领域，其多样的功能以及较低的功耗使其在当前市场上占有一席之地。尤其是在需要高频信号处理和调制解调功能的应用场景中，3046的性能尤为突出。芯片3046的详细参数芯片3046的详细参数如下： - 工作电压：3.3V至5V - 工作温度范围：-40°C至85°C - 最大功耗：50 mW - 频率范围：10 MHz至100 MHz - 输入阻抗：1 MΩ - 输出阻抗：50 Ω - 数据传输速率：最高为1 Mbps - 封装类型：DIP-8，SOIC-8，QFN-8 3046的数据手册中...

产品型号3046的Datasheet PDF文件预览

3046, 3056, AND

3058

HALL EFFECT GEAR-TOOTH SENSORS

–ZERO SPEED

The A3046EU/LU, A3056EU/LU, and A3058EU/LU Hall effect

gear-tooth sensors are monolithic integrated circuits that switch in

response to differential magnetic fields created by ferrous targets.

These devices are ideal for use in gear-tooth-based speed, position,

and timing applications and operate down to zero rpm over a wide

range of air gaps and temperatures. When combined with a back-

biasing magnet and proper assembly techniques, devices can be

configured to give 50% duty cycle or to switch on either leading,

trailing, or both edges of a passing gear tooth or slot.

The six devices differ only in their magnetic switching values and

operating temperature ranges. The low hysteresis of the A3046/56EU

and A3046/56LU makes them perfectly suited for ABS (anti-lock brake

system) or speed sensing applications where maintaining large air

gaps is important. The A3046EU/LU features improved switch point

stability with temperature over the A3056EU/LU. The high hysteresis

of the A3058EU and A3058LU, with their excellent temperature

stability, makes them especially suited to ignition timing applications

where switch-point accuracy (and latching requirements) is extremely

important.

Continued next page...

BENEFITS

Dwg. PH-012

Senses Ferrous Targets Down to Zero RPM

Large Effective Air Gap

Pinning is shown viewed from branded side.

Wide Operating Temperature Range

Operation from Unregulated Supply

High-Speed Operation

ABSOLUTE MAXIMUM RATINGS

Output Compatible With All Logic Families

Reverse Battery Protection

Supply Voltage, V_CC. . . . . . . . . . . . . . 28 V

Reverse Battery Voltage,

Solid-State Reliability

V_RCC. . . . . . . . . . . . . . . . . . . . . . -30 V

Magnetic Flux Density, B . . . . . Unlimited

Output OFF Voltage, V_OUT. . . . . . . . . 28 V

Reverse Output Voltage, V_OUT. . . . . -0.5 V

Output Current, I_OUT. . . . . . . . . . . . 25 mA

Package Power Dissipation, P_D. . 500 mW

Operating Temperature Range, T_A

Resistant to Physical Stress

SELECTION GUIDE

Switching Hysteresis

15-90 G

150-250 G

Operating Temp. Range

Device Type Number

Suffix “EU” . . . . . . . . . -40°C to +85°C

Suffix “LU” . . . . . . . . -40°C to +150°C

Storage Temperature Range,

-40°C to +85°C

A3046EU

A3056EU

A3058EU

T_S. . . . . . . . . . . . . . . -65°C to +170°C

-40°C to +150°C

A3046LU

A3056LU

A3058LU

3046, 3056, AND 3058

HALL EFFECT

GEAR-TOOTH SENSORS

–ZERO SPEED

All devices, when used with a back-

biasing magnet, can be configured to turn ON

or OFF with the leading or trailing edge of a

gear tooth or slot. Changes in fields on the

magnet face caused by a moving ferrous

mass are sensed by two integrated Hall

transducers and are differentially amplified by

on-chip electronics. The on-chip temperature

compensation and Schmitt trigger circuitry

minimizes shifts in effective working air gaps

and switch points over temperature making

these devices ideal for use in ignition timing,

anti-lock braking systems, and speed mea-

surement systems in hostile automotive and

industrial environments.

FUNCTIONAL BLOCK DIAGRAM

SUPPLY

REG

OUTPUT

–

GROUND

Each Hall effect digital Integrated circuit

includes two quadratic Hall effect sensing

elements, a voltage regulator, temperature

compensating circuitry, low-level amplifier,

Schmitt trigger, and an open-collector output

driver. The on-board regulator permits

operation with supply voltages of 4.5 to 24

volts. The output stage can switch up to 20

mA at conservatively specified repetition

rates to 20 kHz and is compatible with bipolar

and MOS logic circuits.

Dwg. FH-010

Both magnetic characteristics are available in a choice of two operat-

ing temperature ranges. Suffix EU devices have an operating range of

-40°C to +85°C while suffix LU devices feature an operating range of

-40°C to +150°C. All devices are packaged in a 3-pin plastic SIP.

ELECTRICAL CHARACTERISTICS at V = 8 V, over operating temperature range.

Limits

Characteristic

Supply Voltage

Power-Up State

Symbol

V_CC

Test Conditions

Operating

Min.

Typ.

—

Max.

Units

4.5

—

3058* only,

Output is OFF

—

_CC= 0 4.5 V, B < B_OP

Output Saturation Voltage

Output Leakage Current

Supply Current

V_OUT(SAT)

I_OUT= 20 mA, B > B_OP

V_CC= V_OUT= 24 V, B < B_RP

V_CC= 24 V, B < B_RP

—

135

—

400

5.0

µA

I_OFF

I_CC

t_r

7.2

100

Output Rise time

R_L= 820 Ω, C_L= 20 pF

—

Output Fall time

t_f

—

115 Northeast Cutoff, Box 15036

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

3046, 3056, AND 3058

HALL EFFECT

GEAR-TOOTH SENSORS

–ZERO SPEED

MAGNETIC CHARACTERISTICS in gauss at V = 8 V.

Part Numbers*

3046

Min. Typ. Max.

3056

3058

Characteristic

Test Conditions

Min. Typ. Max.

Operate Point, B_OP

Output Switches OFF to ON,

—

-150

—

150

—

-150

—

150

—

250

T = +25°C

Release Point, B_RP

Hysteresis, B_hys

Output Switches ON to OFF,

—

-250

—

T = +25°C

B_OP-B_RP, T_A= +25°C

150 200 250

Over operating temperature range,

Change in Trip Point,

—

Ref. B_OPor B_RPat T_A= +25°C

∆B_OPor ∆B_RP

NOTES: 1. Magnetic switch points are specified as the

difference in magnetic fields at the two Hall

elements.

TYPICAL OPERATING CHARACTERISTICS

200

= 8 V

= 20 mA

2. As used here, negative flux densities are

defined as less than zero (algebraic conven-

tion).

3. Typical values are at T_A= +25°C.

* Complete part number includes the prefix

‘A’ and a suffix to identify operating tempera-

ture range and package style. See selection

guide.

OUT

180

160

140

120

100

-50

100

150

AMBIENT TEMPERATURE IN °C

Dwg. GH-033

V = 24 V

= +25°C

B > B

B < B

-50

100

150

SUPPLY VOLTAGE IN VOLTS

AMBIENT TEMPERATURE IN °C

Dwg. GH-031

Dwg. GH-032

www.allegromicro.com

3046, 3056, AND 3058

HALL EFFECT

GEAR-TOOTH SENSORS

–ZERO SPEED

APPLICATIONS INFORMATION

Figure 1

TYPICAL GEAR-TOOTH SENSING

APPLICATION

A gear-tooth sensing system consists of the sensor IC, a back-

biasing magnet, an optional pole piece, and a target (Figure 1). The

system requirements are usually specified in terms of the effective

working air gap between the package and the target (gear teeth), the

number of switching events per rotation of the target, temperature and

speed ranges, minimum pulse duration or duty cycle, and switch point

accuracy. Careful choice of the sensor IC, magnet material and

shape, target material and shape, and assembly techniques enables

large working air gaps and high switch-point accuracy over the system

operating temperature range.

BACK-BIASING

MAGNET

OPTIONAL POLE PIECE

Naming Conventions. With a south pole in front of the branded

surface of the sensor, a north pole behind the sensor, the field at the

sensor is defined as positive. As used here, negative flux densities are

defined as less than zero (algebraic convention), e.g., -100 G is less

than -50 G.

SENSOR IC

Magnet Biasing. In order to sense moving non-magnetized

ferrous targets, these devices must be back-biased by mounting the

unbranded side on a small permanent magnet. Either magnetic pole

(north or south) can be used.

The devices can also be used without a back-biasing magnet.

In this configuration, the sensor can be used to detect a rotating ring

magnet such as those found in brushless dc motors or in speed

sensing applications. Here, the sensor detects the magnetic field

gradient created by the magnetic poles.

TARGET

GEAR

Figure 2

TYPICAL TRANSFER CHARACTERISTIC

Dwg. AH-003

24 V

MAX

OUT(SAT)

-B

DIFFERENTIAL FLUX DENSITY, BE1 – BE2

Dwg. GH-034

115 Northeast Cutoff, Box 15036

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

3046, 3056, AND 3058

HALL EFFECT

GEAR-TOOTH SENSORS

–ZERO SPEED

Sensor Operation. The A3046EU/LU,

A3056EU/LU, and A3058EU/LU sensor ICs

each contain two integrated Hall transducers

(E1 and E2) that are used to sense a mag-

netic field differential across the face of the

IC (see SENSOR LOCATION drawing). Referring

to Figure 2, the trigger switches the output

ON (output LOW) when B_E1– B_E2> B_OPand

switches the output OFF (output HIGH) when

B_E1– B_E2< B_RP. The difference between B_OP

and B_RPis the hysteresis of the device.

Figure 3

GEAR-TOOTH SENSOR OPERATION

LEADING

EDGE

TRAILING

EDGE

GEAR

DIRECTION

OF ROTATION

NORTH

SOUTH

Figure 3 relates the output state of a

back-biased sensor IC, with switching

characteristics shown in Figure 2, to the

target gear profile and position. Assume a

north pole back-bias configuration (equivalent

to south pole at the face of the device). The

motion of the gear produces a phase-shifted

field at E1 and E2 (Figure 3 (a)); internal

conditioning circuitry subtracts the field at the

two elements (Figure 3 (b)); and the Schmitt

trigger at the output of the conditioning

circuitry switches at the pre-determined

thresholds (B_OPand B_RP). As shown (Figure

3 (c)), the IC output is LOW whenever sensor

E1 sees a (ferrous) gear tooth and sensor E2

faces air. The output is HIGH when sensor

E1 sees air and sensor E2 sees the ferrous

target.

4300 G

& B

(a)

E1 E2

4130 G

150 G

= +25 G

(b)

(c)

– B

0 G

E1 E2

= –25 G

-150 G

OUT

OUT(SAT)

OUTPUT DUTY CYCLE ≈ 50%

Dwg. WH-003

A gear-tooth sensor can be configured

(see ASSEMBLY TECHNIQUES) to operate as a

latch, a (positive) switch, or a negative

switch. Note the change in duty cycle in

each of the cases (Figure 4).

In the configuration shown in Figure 3, such a device will switch ON

and then switch OFF on the leading or rising edge of the target tooth

(Figure 4 (a)).

A latch is a device where the operate

point is greater than zero gauss and the

release point is less than zero gauss. With

the configuration shown in Figure 3, such a

device will switch ON on the leading edge

and OFF on the trailing edge of the target

tooth.

A negative switch is a device where both the operate and release

points are less than zero gauss (negative values). In the configuration

shown in Figure 3, such a device will switch OFF and then switch ON

on the trailing or falling edge of the target tooth (Figure 4 (b)).

Speed sensors can use any of the three sensor configurations

described. Timing sensors, however, must use a latch to guarantee

dual-edge detection. Latches are most easily made using the

A3058EU or A3058LU device types.

A (positive) switch is a device where

both the operate and release points are

greater than zero gauss (positive values).

www.allegromicro.com

3046, 3056, AND 3058

HALL EFFECT

GEAR-TOOTH SENSORS

–ZERO SPEED

SYSTEM ISSUES

Figure 4

Optimal performance of a gear-tooth

sensing system strongly depends on four

factors: the IC magnetic parameters, the

magnet, the pole piece configuration, and

the target.

POSITIVE AND NEGATIVE SWITCH OPERATION

150 G

= +100 G

= +50 G

– B

E1 E2

Sensor Specifications. Shown in

Figure 5 are graphs of the differential field as

a function of air gap. A 48-tooth, 2.5”

(63.5 mm) diameter, uniform wheel similar to

that used in ABS applications is used. The

samarium cobalt magnet is 0.32” diameter by

0.20” long (8.13 x 5.08 mm). The maximum

functioning air gap with this typical gear/

magnet combination can be determined

using the graphs and the specifications for

the sensor IC.

-150 G

(a)

OUT

OUT(SAT)

OUTPUT DUTY CYCLE = 65%

150 G

– B

E1 E2

In this case, if an A3056EU/LU sensor

with a B_OPof +25 G and a B_RPof -25 G is

used, the maximum allowable air gap would

be 0.110” (2.79 mm). If the switch points

change +75 G with temperature (B_OP= + 100

G, B_RP= +50 G), the maximum air gap will be

approximately 0.077” (1.96 mm).

= -50 G

= -100 G

-150 G

(b)

OUT

OUT(SAT)

OUTPUT DUTY CYCLE = 33%

All system issues should be translated

back to such a profile to aid the prediction of

system performance.

Dwg. WH-004

Magnet Selection. These devices can

be used with a wide variety of commercially

available permanent magnets. The selection

of the magnet depends on the operational

and environmental requirements of the

sensing system. For systems that require

high accuracy and large working airgaps or

an extended temperature range, the usual

magnet material of choice is rare earth

samarium cobalt (SmCo). This magnet

material has a high energy product and can

operate over an extended temperature range.

For systems that require low-cost solutions

for an extended temperature range, Alnico-8

can be used. Due to its relatively low energy

product, smaller operational airgaps can be

expected. At this time, neodymium iron

boron (NeFeB) is not a proven high-tempera-

ture performer; at temperatures above

+150°C it may irreversibly lose magnetic strength. Of these three

magnet materials, Alnico-8 is the least expensive by volume and

SmCo is the most expensive.

Either cylindrical- or cube-shaped magnets can be used, as long

as the magnet pole face at least equals the facing surface(s) of the IC

package and the pole piece. Choose the length of the magnet to

obtain a high length-to-width ratio, up to 0.75:1 for rare earths, or 1.5:1

for Alnico-8. Any added magnet length may incrementally improve the

allowable maximum air gap.

Magnets, in general, have a non-uniform magnetic surface profile.

The flux across the face of a magnet can vary by as much as 5% of the

average field over a 0.10” (2.5 mm) region. If a Hall sensor is placed

directly on a magnet face, the non-uniformity can appear to shift the

operating parameters of the sensor. For example, if a device is placed

on a 3000 G magnet with 2% face offsets, each of the operating

points might be shifted by 60 G. When offsets are present, the

operating characteristics may be greatly altered.

115 Northeast Cutoff, Box 15036

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

3046, 3056, AND 3058

HALL EFFECT

GEAR-TOOTH SENSORS

–ZERO SPEED

Pole Piece Design. A pole piece may be used at the face of the

magnet to smooth out the magnet-face offsets. A 0.020” (0.51 mm)

thick, soft-iron pole piece will bring the field non-uniformity down to

the 1%-to- 3% range. Note that pole pieces will minimize but not

eliminate the non-uniformity in the magnet face field. Front pole pieces

will almost always result in a reduced maximum air gap.

Figure 5

DIFFERENTIAL FLUX DENSITY

2000

1500

1000

500

Ferrous Targets. The best ferrous targets are made of cold-rolled

low-carbon steel. Sintered-metal targets are also usable, but care

must be taken to ensure uniform material composition and density.

-500

The teeth or slots of the target should be cut with a slight angle

so as to minimize the abruptness of transition from metal to air as the

target passes by the sensor. Sharp transitions will result in magnetic

overshoots that can result in false triggering.

-1000

-1500

-2000

0.025

0.050

0.075

0.100

0.125

Gear teeth larger than 0.10” (2.54 mm) wide and at least 0.10”

(2.54 mm) deep provide reasonable working air gaps and adequate

change in magnetic field for reliable switching. Generally, larger teeth

and slots allow a larger air gap. A gear tooth width approximating the

spacing between sensors (0.088” or 2.24 mm) requires special care in

the system design and assembly techniques.

AIRGAP FROM PACKAGE FACE IN INCHES

Dwg. GH-035

200

150

100

ASSEMBLY TECHNIQUES

Due to magnet face non-uniformities and device variations, it is

recommended that applications requiring precision switching utilize a

mechanical optimization procedure during assembly. Without a pole

piece, the inherent magnet face offsets can be used to pre-bias the

magnetic circuit to obtain any desired operating mode. This is

achieved by physically changing the relative position of the magnet

behind the sensor to achieve the desired system performance objec-

tive. For example, with a rotating ABS gear, the objective might be a

50% duty cycle at maximum air gap. Similar objectives can be set for

ignition (crank and cam position) sensing systems.

-50

-100

-150

-200

0.070

0.080

0.090

0.100

0.110

0.120

AIRGAP FROM PACKAGE FACE IN INCHES

Dwg. GH-036

SENSOR LOCATIONS

( 0.005” [0.13 mm] die placement)

Non-precision speed sensing applications do not require optimiza-

tion. For applications where mechanical optimization is not feasible,

non-zero speed devices such as the UGN/UGS3059KA ac-coupled

gear-tooth sensor are available.

ACTIVE AREA DEPTH

0.015"

0.088"

0.38 mm

2.23 mm

NOM

0.075"

1.89 mm

BRANDED

SURFACE

Dwg. MH-002-8D

www.allegromicro.com

3046, 3056, AND 3058

HALL EFFECT

GEAR-TOOTH SENSORS

–ZERO SPEED

Dimensions in Inches

(controlling dimensions)

Dimensions in Millimeters

(for reference only)

0.183

0.178

4.65

4.52

0.063

0.059

1.60

1.50

0.181

0.176

4.60

4.47

45°

0.018

0.46

0.086

MAX

2.18

MAX

15.24

14.23

0.44

0.35

0.0173

0.0138

0.600

0.560

0.48

0.36

0.0189

0.0142

SEE NOTE

1.27

2.54

0.050

0.100

Dwg. MH-003E mm

Dwg. MH-003E in

The products described herein are manufactured under one or

more of the following U.S. patents: 5,045,920; 5,264,783; 5,442,283;

5,389,889; 5,581,179; 5,517,112; 5,619,137; 5,621,319; 5,650,719;

5,686,894; 5,694,038; 5,729,130; 5,917,320; and other patents

pending.

NOTES:1. Tolerances on package height and width represent

allowable mold offsets. Dimensions given are

measured at the widest point (parting line).

Allegro MicroSystems, Inc. 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.

2. Exact body and lead configuration at vendor’s option

within limits shown.

3. Height does not include mold gate flash.

4. Recommended minimum PWB hole diameter to

Allegro products are not authorized for use as critical components

in life-support appliances, devices, or systems without express written

approval.

clear transition area is 0.035” (0.89 mm).

5. Where no tolerance is specified, dimension is

nominal.

The information included herein is believed to be accurate and

reliable. However, Allegro MicroSystems, Inc. assumes no responsi-

bility for its use; nor for any infringements of patents or other rights of

third parties that may result from its use.

6. Minimum lead length was 0.500” (12.70 mm). If

existing product to the original specifications is not

acceptable, contact sales office before ordering.

115 Northeast Cutoff, Box 15036

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

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3046003产品参数

型号:	3046003
是否Rohs认证：	符合
生命周期：	Active
Reach Compliance Code：	not_compliant
ECCN代码：	EAR99
HTS代码：	8536.69.40.40
风险等级：	2.29
其他特性：	STANDARD: 94V-0, PA
紧固方法：	SCREW
安装类型：	DIN RAIL
层数：	1
行数：	1
通路数：	3
额定电流：	20 A
额定电压：	500 V
安全认证：	CSA; CUL; UL
端子和端子排类型：	MODULAR TERMINAL BLOCK
导线横截面：	6 mm2
线规：	10 AWG
Base Number Matches：	1

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