Datasheet > DS1244

DS1244

更新时间： 2024-11-13 22:54:35

品牌	Logo	应用领域
BB		转换器
页数	文件大小	规格书
19页	291K
描述
Low-Power, 24-Bit ANALOG-TO-DIGITAL CONVERTER

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DS1244 数据手册

ADS1244

SBAS273 – DECEMBER 2002

Low-Power, 24-Bit

ANALOG-TO-DIGITAL CONVERTER

FEATURES

DESCRIPTION

The ADS1244 is a 24-bit, delta-sigma Analog-to-Digital (A/D)

converter. It offers excellent performance and very low power

in an MSOP-10 package and is well suited for demanding

high-resolution measurements, especially in portable and

other space- and power-constrained systems.

● 20-BIT EFFECTIVE RESOLUTION

● CURRENT CONSUMPTION: 90µA

● ANALOG SUPPLY: 2.5V to 5.25V

● DIGITAL SUPPLY: 1.8V to 3.6V

A 3rd-order delta-sigma modulator and digital filter form the

basis of the A/D converter. The analog modulator has a ±5V

differential input range. The digital filter rejects both 50Hz

and 60Hz signals, completely settles in one cycle, and

outputs data at 15 samples per second.

● ±5V DIFFERENTIAL INPUT RANGE

● 0.0002% INL (TYP), 0.0008% INL (MAX)

● SIMPLE 2-WIRE SERIAL INTERFACE

● SIMULTANEOUS 50Hz AND 60Hz REJECTION

● SINGLE CONVERSIONS WITH SLEEP MODE

● SINGLE-CYCLE SETTLING

A simple, 2-wire serial interface provides all the necessary

control. Data retrieval, self-calibration, and Sleep Mode are

handled with a few simple waveforms. When only single

conversions are needed, the ADS1244 can be shut down

(Sleep Mode) while idle between measurements to dramati-

cally reduce the overall power dissipation. Multiple ADS1244s

can be connected together to create a synchronously sam-

pling multichannel measurement system. The ADS1244 is

designed to easily connect to microcontrollers, such as the

MSP430.

● SELF-CALIBRATION

● WELL-SUITED FOR MULTICHANNEL SYSTEMS

● EASILY CONNECTS TO THE MSP430

APPLICATIONS

● HAND-HELD INSTRUMENTATION

● PORTABLE MEDICAL EQUIPMENT

● INDUSTRIAL PROCESS CONTROL

● WEIGH SCALES

The ADS1244 supports 2.5V to 5.25V analog supplies and

1.8V to 3.6V digital supplies. Power is typically less than

270µW in normal operation and less than 1µW during Sleep

Mode.

VREFP VREFN

AVDD

DVDD

CLK

DRDY/DOUT

Serial

AINP

AINN

3rd-Order

Modulator

Digital

Filter

Interface

SCLK

GND

Please be aware that an important notice concerning availability, standard warranty, and use in critical applications of

Texas Instruments semiconductor products and disclaimers thereto appears at the end of this data sheet.

PRODUCTION DATA information is current as of publication date.

Products conform to specifications per the terms of Texas Instruments

standard warranty. Production processing does not necessarily include

testing of all parameters.

www.ti.com

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与DS1244相关器件

型号	品牌	获取价格	描述	数据表
DS1244P	DALLAS	获取价格	256k NV SRAM with Phantom Clock
DS1244P-100	MAXIM	获取价格	Real Time Clock, 0 Timer(s), CMOS, PDIP28, MODULE, DIP-28
DS1244P-70	MAXIM	获取价格	Real Time Clock, 0 Timer(s), CMOS, PDIP28, 0.740 INCH, EXTENDED MODULE, DIP-28
DS1244PP-100	MAXIM	获取价格	Real Time Clock, 0 Timer(s), CMOS, POWERCAP MODULE BOARD-34
DS1244PP-70	MAXIM	获取价格	Real Time Clock, 0 Timer(s), CMOS, POWERCAP MODULE-34
DS1244W-120	DALLAS	获取价格	256k NV SRAM with Phantom Clock
DS1244W-120	MAXIM	获取价格	Real Time Clock, Non-Volatile, 0 Timer(s), CMOS, PDIP28, 0.740 INCH, ENCAPSULATED, DIP-28
DS1244W-120+	MAXIM	获取价格	Real Time Clock, Volatile, CMOS, PDIP28, 0.740 INCH, ROHS COMPLIANT, ENCAPSULATED, DIP-28
DS1244W-120IND	DALLAS	获取价格	256k NV SRAM with Phantom Clock
DS1244W-120IND	MAXIM	获取价格	Real Time Clock, Non-Volatile, 0 Timer(s), CMOS, PDIP28, 0.740 INCH, ENCAPSULATED, DIP-28

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