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参数资料
| 型号： | DS1244W-120IND |
| 英文描述： | 256k NV SRAM with Phantom Clock |
| 中文描述： | 256k非易失SRAM与幻影时钟 |
| 文件页数： | 1/19页 |
| 文件大小： | 292K |
| 代理商： | DS1244W-120IND |
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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PDF描述 |
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| DS1244WP-120IND | 256k NV SRAM with Phantom Clock |
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| DS1244W-120 | 256k NV SRAM with Phantom Clock |
| DS1244WP-120 | 256k NV SRAM with Phantom Clock |
相关代理商/技术参数 |
参数描述 |
|---|---|
| DS1244W-120IND+ | 功能描述:实时时钟 256k NV SRAM w/Phantom Clock RoHS:否 制造商:Microchip Technology 功能:Clock, Calendar. Alarm RTC 总线接口:I2C 日期格式:DW:DM:M:Y 时间格式:HH:MM:SS RTC 存储容量:64 B 电源电压-最大:5.5 V 电源电压-最小:1.8 V 最大工作温度:+ 85 C 最小工作温度: 安装风格:Through Hole 封装 / 箱体:PDIP-8 封装:Tube |
| DS1244WP-120 | 功能描述:实时时钟 RoHS:否 制造商:Microchip Technology 功能:Clock, Calendar. Alarm RTC 总线接口:I2C 日期格式:DW:DM:M:Y 时间格式:HH:MM:SS RTC 存储容量:64 B 电源电压-最大:5.5 V 电源电压-最小:1.8 V 最大工作温度:+ 85 C 最小工作温度: 安装风格:Through Hole 封装 / 箱体:PDIP-8 封装:Tube |
| DS1244WP-120+ | 功能描述:实时时钟 256k NV SRAM w/Phantom Clock RoHS:否 制造商:Microchip Technology 功能:Clock, Calendar. Alarm RTC 总线接口:I2C 日期格式:DW:DM:M:Y 时间格式:HH:MM:SS RTC 存储容量:64 B 电源电压-最大:5.5 V 电源电压-最小:1.8 V 最大工作温度:+ 85 C 最小工作温度: 安装风格:Through Hole 封装 / 箱体:PDIP-8 封装:Tube |
| DS1244WP-120IND | 功能描述:IC NVSRAM 256KBIT 120NS 34PCM RoHS:否 类别:集成电路 (IC) >> 时钟/计时 - 实时时钟 系列:- 产品培训模块:Obsolescence Mitigation Program 标准包装:1 系列:- 类型:时钟/日历 特点:警报器，闰年，SRAM 存储容量:- 时间格式:HH:MM:SS（12/24 小时） 数据格式:YY-MM-DD-dd 接口:SPI 电源电压:2 V ~ 5.5 V 电压 - 电源，电池:- 工作温度:-40°C ~ 85°C 安装类型:表面贴装 封装/外壳:8-WDFN 裸露焊盘 供应商设备封装:8-TDFN EP 包装:管件 |
| DS1244WP-120IND+ | 功能描述:实时时钟 256k NV SRAM w/Phantom Clock RoHS:否 制造商:Microchip Technology 功能:Clock, Calendar. Alarm RTC 总线接口:I2C 日期格式:DW:DM:M:Y 时间格式:HH:MM:SS RTC 存储容量:64 B 电源电压-最大:5.5 V 电源电压-最小:1.8 V 最大工作温度:+ 85 C 最小工作温度: 安装风格:Through Hole 封装 / 箱体:PDIP-8 封装:Tube |
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