參數(shù)資料
型號(hào)： ADS1244
英文描述： Low-Power, 24-Bit ANALOG-TO-DIGITAL CONVERTER
中文描述： 低功耗，24位模擬數(shù)字轉(zhuǎn)換器
文件頁(yè)數(shù)： 1/19頁(yè)
文件大?。?/td> 292K
代理商： ADS1244
ADS1244
SBAS273 – DECEMBER 2002
www.ti.com
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.
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.
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.
The ADS1244 supports 2.5V to 5.25V analog supplies and
1.8V to 3.6V digital supplies. Power is typically less than
270
μ
W in normal operation and less than 1
μ
W during Sleep
Mode.
FEATURES
G
20-BIT EFFECTIVE RESOLUTION
G
CURRENT CONSUMPTION: 90
μ
A
G
ANALOG SUPPLY: 2.5V to 5.25V
G
DIGITAL SUPPLY: 1.8V to 3.6V
G
±
5V DIFFERENTIAL INPUT RANGE
G
0.0002% INL (TYP), 0.0008% INL (MAX)
G
SIMPLE 2-WIRE SERIAL INTERFACE
G
SIMULTANEOUS 50Hz AND 60Hz REJECTION
G
SINGLE CONVERSIONS WITH SLEEP MODE
G
SINGLE-CYCLE SETTLING
G
SELF-CALIBRATION
G
WELL-SUITED FOR MULTICHANNEL SYSTEMS
G
EASILY CONNECTS TO THE MSP430
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.
Copyright 2002, Texas Instruments Incorporated
Low-Power, 24-Bit
ANALOG-TO-DIGITAL CONVERTER
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.
APPLICATIONS
G
HAND-HELD INSTRUMENTATION
G
PORTABLE MEDICAL EQUIPMENT
G
INDUSTRIAL PROCESS CONTROL
G
WEIGH SCALES
Digital
Filter
Serial
Interface
DRDY/DOUT
SCLK
CLK
AINN
AINP
VREFP VREFN
AVDD
GND
DVDD
3rd-Order
Modulator
ADS1244
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相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
ADS1244EVM 功能描述:數(shù)據(jù)轉(zhuǎn)換 IC 開(kāi)發(fā)工具 ADS1244 Eval Mod RoHS:否 制造商:Texas Instruments 產(chǎn)品:Demonstration Kits 類(lèi)型:ADC 工具用于評(píng)估:ADS130E08 接口類(lèi)型:SPI 工作電源電壓:- 6 V to + 6 V
ADS1244-EVM 制造商:BB 制造商全稱(chēng):BB 功能描述:Low-Power, 24-Bit ANALOG-TO-DIGITAL CONVERTER
ADS1244IDGSR 功能描述:模數(shù)轉(zhuǎn)換器 - ADC 24-Bit Delta-Sigma 15SPS w/50-60Hz rej RoHS:否 制造商:Texas Instruments 通道數(shù)量:2 結(jié)構(gòu):Sigma-Delta 轉(zhuǎn)換速率:125 SPs to 8 KSPs 分辨率:24 bit 輸入類(lèi)型:Differential 信噪比:107 dB 接口類(lèi)型:SPI 工作電源電壓:1.7 V to 3.6 V, 2.7 V to 5.25 V 最大工作溫度:+ 85 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:VQFN-32
ADS1244IDGSRG4 功能描述:模數(shù)轉(zhuǎn)換器 - ADC 24-Bit Delta-Sigma 15SPS w/50-60Hz rej RoHS:否 制造商:Texas Instruments 通道數(shù)量:2 結(jié)構(gòu):Sigma-Delta 轉(zhuǎn)換速率:125 SPs to 8 KSPs 分辨率:24 bit 輸入類(lèi)型:Differential 信噪比:107 dB 接口類(lèi)型:SPI 工作電源電壓:1.7 V to 3.6 V, 2.7 V to 5.25 V 最大工作溫度:+ 85 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:VQFN-32
ADS1244IDGST 功能描述:模數(shù)轉(zhuǎn)換器 - ADC 24-Bit Delta-Sigma 15SPS w/50-60Hz rej RoHS:否 制造商:Texas Instruments 通道數(shù)量:2 結(jié)構(gòu):Sigma-Delta 轉(zhuǎn)換速率:125 SPs to 8 KSPs 分辨率:24 bit 輸入類(lèi)型:Differential 信噪比:107 dB 接口類(lèi)型:SPI 工作電源電壓:1.7 V to 3.6 V, 2.7 V to 5.25 V 最大工作溫度:+ 85 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:VQFN-32
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