MAX1441GUP/V+

更新时间： 2024-11-02 11:18:39

品牌	Logo	应用领域
美信 - MAXIM		传感器
页数	文件大小	规格书
41页	1118K
描述
Automotive, Two-Channel Proximity and Touch Sensor

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数据手册

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MAX1441GUP/V+ 数据手册

19-5310; Rev 0; 7/10

Automotive, Two-Channel Proximity and

Touch Sensor

General Description

Features

S Low Average Operating Current (100µA at 14V)

The MAX1441 proximity and touch sensor IC is designed

for capacitive proximity sensing in automotive passive

remote keyless entry (PRKE) and other applications.

This device provides signal processing to support

two independent touch/proximity sensor channels. The

device features two open-drain output pins with high-

voltage capability up to 28V, as well as five digital I/Os

to indicate sensing events. During manufacturing, JTAG

programming uses four digital I/Os.

S 1.2.fF LSB Capacitance-to-Digital Resolution (5pF

Range)

S 5V to 28V Operation

S 45V Overvoltage Protection

S Sinusoidal Excitation for Reduced EMI Emissions

S Frequency Spreading Operation for Reduced EMI

Susceptibility and Emissions

The device uses grounded electrode capacitive sens-

ing to measure capacitance between one of the two

sense pins and the ground. A hand approaching a

sense electrode attached to these sense pins causes

a change in measured capacitance indicating the

presence (touch or proximity) of the object. Active-

guard outputs shield the sense electrode from unwant-

ed sources without adding parasitic capacitance.

Spread-spectrum techniques in the sensor excitation

circuit reduce both electromagnetic emissions and

susceptibility to interfering signals. In addition, the

sensing excitation frequency is programmable from

100kHz to 500kHz in 10kHz steps to avoid interference.

S Active-Guard-Sense Architecture Provides

Increased Flexibility in System Packaging

S CMOS/LVCMOS-Compatible Outputs

S Embedded µC Supports User-Specified Adaptive

Sense Algorithms

S 2kwords Flash Memory

S 128-Byte SRAM

2kV ESD Immunity on Sensor I/O Lines

S JTAG Serial Interface

S Supports Two Independent Grounded Capacitor

Sensor Inputs

The sensor input signals are converted to a 12-bit

digital data and are available to an on-chip microcon-

troller (FC). The device provides independent offset

compensation of up to 63pF for each input channel.

Each channel can be programmed to 5pF, 10pF, or 20pF

full-scale range.

S -12V Reverse Voltage Protection with External

Diode

Applications

PRKE System Proximity Sensing

Object Detection Systems

The device features an internal MAXQ microcontroller

with 2kword of flash for user programs and 128 bytes

of SRAM. This feature provides the ability to implement

customized signal processing and discrimination

algorithms that optimize performance in the systems.

Ordering Information

PART

TEMP RANGE

PIN-PACKAGE

MAX1441GUP/V+

-40NC to +105NC

20 TSSOP

The device offers user-configurable general-purpose

digital I/O lines. Power-on-reset (POR) circuitry provides

consistent startup of the device, and a watchdog

timer ensures long-term reliable operation of the user’s

software.

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

/V Denotes an automotive qualified part.

The device is available in a 20-pin TSSOP package and

is specified over the -40NC to +105NC automotive tem-

perature range.

MAXQ is a registered trademark of Maxim Integrated

Products, Inc.

_______________________________________________________________ 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...41

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与MAX1441GUP/V+相关器件

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MAX1441GUP/V+T	MAXIM	获取价格	Analog Circuit, 1 Func, BICMOS, PDSO20, ROHS COMPLIANT, TSSOP-20
MAX14430	MAXIM	获取价格	Broad Range of Data Transfer Rates (from DC to 200Mbps)
MAX14430EAEE+	MAXIM	获取价格	Interface Circuit,
MAX14430FSEVKIT	MAXIM	获取价格	Broad Range of Data Transfer Rates (from DC to 200Mbps)
MAX14431	MAXIM	获取价格	Broad Range of Data Transfer Rates (from DC to 200Mbps)
MAX14432	MAXIM	获取价格	Broad Range of Data Transfer Rates (from DC to 200Mbps)
MAX14434	MAXIM	获取价格	Four-Channel, Fast, Low-Power, 5kVRMS Digital Isolators
MAX14434	ADI	获取价格	四通道、快速、低功耗、5kVRMS数字隔离器
MAX14435	MAXIM	获取价格	Four-Channel, Fast, Low-Power, 5kVRMS Digital Isolators
MAX14435	ADI	获取价格	四通道、快速、低功耗、5kVRMS数字隔离器

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