AD7150

更新时间： 2024-11-04 04:04:15

品牌	Logo	应用领域
亚德诺 - ADI		转换器
页数	文件大小	规格书
24页	258K
描述
Ultra Low Power, 2 Channel, Capacitance Converter for Proximity Sensing

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AD7150 数据手册

Ultra Low Power, 2 Channel, Capacitance

Converter for Proximity Sensing

Preliminary Technical Data

AD7150

GENERAL DESCRIPTION

FEATURES

Ultra low power

The AD7150 delivers a complete signal processing solution for

capacitive proximity sensors, featuring an ultra low power

converter with fast response time.

3.3 V, 90 uA

Response time 10 ms

Adaptive environmental compensation

Two independent capacitance input channels

Sensor capacitance (C_SENS) 0 up to 14 pF

Sensitivity to 0.8 fF

The AD7150 uses Analog Devices’ capacitance to digital

converter (CDC) technology, which combines features

important for interfacing to real sensors, such as a high input

sensitivity and a high tolerance of both input parasitic ground

capacitance and leakage current.

EMC tested

Two modes of operation:

Standalone with fixed settings

Interfaced to a uC for user-defined settings

Two proximity detection output flags

2-wire serial interface (I²C®-compatible)

Operating temperature:

-40°C to +125°C

The integrated adaptive threshold algorithm compensates for

any variations in the sensor capacitance due to environmental

factors like humidity and temperature, or changes in the

dielectric material over time.

By default, the AD7150 operates in standalone mode using the

fixed power up settings and indicates detection on two digital

outputs. Alternatively, the AD7150 can be interfaced to a uC via

I²C interface, the internal registers can be programmed with

user-defined settings and the data and status can be read from

the part.

10-lead uSOIC package

APPLICATIONS

Proximity sensing

Contact-less switching

Position detection

Level detection

The AD7150 operates from a 3.3 V power supply. It is specified

over the temperature range of -40°C to +125°C.

FUNCTIONAL BLOCK DIAGRAM

IN1

SENS1

SCL

DIGITAL

FILTER

SERIAL

INTERFACE

Σ−∆ CDC

SDA

EXC1

MUX

AD7150

THRESHOLD

OUT1

IN2

SENS2

EXCITATION

THRESHOLD

GND

OUT2

EXC2

Figure 1.

Rev. PrD, 8. November 2006

Information furnished by Analog Devices is believed to be accurate and reliable.

However, no responsibility is assumed by Analog Devices for its use, nor for any

infringements of patents or other rights of third parties that may result from its use.

Specifications subject to change without notice. No license is granted by implication

or otherwise under any patent or patent rights of Analog Devices. Trademarks and

registered trademarks are the property of their respective owners.

One Technology Way, P.O. Box 9106, Norwood, MA 02062-9106, U.S.A.

Tel: 781.329.4700

Fax: 781.461.3113

www.analog.com

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与AD7150相关器件

型号	品牌	获取价格	描述	数据表
AD7150BRMZ	ADI	获取价格	Ultra-Low Power, 2-Channel, Capacitance Converter for Proximity Sensing
AD7150BRMZ-REEL	ADI	获取价格	Ultra-Low Power, 2-Channel, Capacitance Converter for Proximity Sensing
AD7151	ADI	获取价格	Ultra-Low Power, 1-Channel, Capacitance Converter for Proximity Sensing
AD7151BRMZ	ADI	获取价格	Ultra-Low Power, 1-Channel, Capacitance Converter for Proximity Sensing
AD7151BRMZ-REEL	ADI	获取价格	Ultra-Low Power, 1-Channel, Capacitance Converter for Proximity Sensing
AD7152	ADI	获取价格	12-Bit Capacitance-to-Digital Converter
AD7152BRMZ	ADI	获取价格	12-Bit Capacitance-to-Digital Converter
AD7152BRMZ-REEL	ADI	获取价格	12-Bit Capacitance-to-Digital Converter
AD7153	ADI	获取价格	12-Bit Capacitance-to-Digital Converter
AD7153BRMZ	ADI	获取价格	12-Bit Capacitance-to-Digital Converter

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