MAX9925

更新时间： 2024-11-14 07:16:15

品牌	Logo	应用领域
美信 - MAXIM		传感器
页数	文件大小	规格书
23页	340K
描述
Variable Reluctance Sensor Interfaces with Differential Input and Adaptive Peak Threshold

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MAX9925 数据手册

19-4283; Rev 4; 3/12

Variable Reluctance Sensor Interfaces with

Differential Input and Adaptive Peak Threshold

4–MAX927

General Description

Features

The MAX9924–MAX9927 variable reluctance (VR or mag-

netic coil) sensor interface devices are ideal for position

and speed sensing for automotive crankshafts,

camshafts, transmission shafts, etc. These devices inte-

grate a precision amplifier and comparator with selectable

adaptive peak threshold and zero-crossing circuit blocks

that generate robust output pulses even in the presence

of substantial system noise or extremely weak VR signals.

o Differential Input Stage Provides Enhanced Noise

Immunity

o Precision Amplifier and Comparator Allows

Small-Signal Detection

o User-Enabled Internal Adaptive Peak Threshold or

Flexible External Threshold

o Zero-Crossing Detection Provides Accurate

The MAX9926/MAX9927 are dual versions of the

MAX9924/MAX9925, respectively. The MAX9924/

MAX9926 combine matched resistors with a CMOS input

precision operational amplifier to give high CMRR over a

wide range of input frequencies and temperatures. The

MAX9924/MAX9926 differential amplifiers provide a fixed

gain of 1V/V. The MAX9925/MAX9927 make all three ter-

minals of the internal operational amplifier available,

allowing greater flexibility for gain. The MAX9926 also

provides a direction output that is useful for quadrature-

connected VR sensors that are used in certain high-per-

formance engines. These devices interface with both

new-generation differential VR sensors as well as legacy

single-ended VR sensors.

Phase Information

Ordering Information

PART

TEMP RANGE

-40°C to +125°C

PIN-PACKAGE

MAX9924UAUB+

MAX9924UAUB/V+

MAX9925AUB+

MAX9926UAEE+

MAX9926UAEE/V+

MAX9927AEE+

MAX9927AEE/V+

10 µMAX

16 QSOP

-40°C to +125°C

The MAX9924/MAX9925 are available in the 10-pin

µMAX^®package, while the MAX9926/MAX9927 are

available in the 16-pin QSOP package. All devices are

specified over the -40°C to +125°C automotive temper-

ature range.

+Denotes a lead(Pb)-free/RoHS-compliant package.

/V denotes an automotive qualified part.

Applications

Camshaft VRS Interfaces

Crankshaft VRS Interfaces

Vehicle Speed VRS Interfaces

µMAX is a registered trademark of Maxim Integrated Products, Inc.

Simplified Block Diagram

ENGINE BLOCK

MAX9924

DIFFERENTIAL

AMPLIFIER

VR SENSOR

μC

ADAPTIVE/MINIMUM

AND

ZERO-CROSSING

THRESHOLDS

INTERNAL/EXTERNAL

BIAS VOLTAGE

________________________________________________________________ Maxim Integrated Products

For pricing, delivery, and ordering information, please contact Maxim Direct at 1-888-629-4642,

or visit Maxim’s website at www.maxim-ic.com.

12 3 4 5 6 7...23

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与MAX9925相关器件

型号	品牌	获取价格	描述	数据表
MAX9925AUB	MAXIM	获取价格	Variable Reluctance Sensor Interfaces with Differential Input and Adaptive Peak Threshold
MAX9925AUB+	MAXIM	获取价格	Variable Reluctance Sensor Interfaces with Differential Input and Adaptive Peak Threshold
MAX9925AUB+T	MAXIM	获取价格	Analog Circuit, 1 Func, BICMOS, PDSO10, ROHS COMPLIANT, MO-187BA, UMAX-10
MAX9926	MAXIM	获取价格	Variable Reluctance Sensor Interfaces with Differential Input and Adaptive Peak Threshold
MAX9926	ADI	获取价格	可变磁阻传感器接口，提供差分输入和自适应峰值门限
MAX9926U	MAXIM	获取价格	Includes Lowpass Sensor Input Filters
MAX9926UAEE	MAXIM	获取价格	Variable Reluctance Sensor Interfaces with Differential Input and Adaptive Peak Threshold
MAX9926UAEE/V	MAXIM	获取价格	Variable Reluctance Sensor Interfaces with Differential Input and Adaptive Peak Threshold
MAX9926UAEE/V+	MAXIM	获取价格	Variable Reluctance Sensor Interfaces with Differential Input and Adaptive Peak Threshold
MAX9926UAEE/V+T	MAXIM	获取价格	Analog Circuit, 2 Func, BICMOS, PDSO16, 0.150 INCH, 0.025 INCH PITCH, ROHS COMPLIANT, MO-1

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