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ADS1258MRTCTEP PDF预览

ADS1258MRTCTEP

更新时间： 2024-11-18 06:36:23
品牌 Logo 应用领域
德州仪器 - TI 转换器
页数 文件大小 规格书
57页 1040K
描述
16-CHANNEL, 24-BIT ANALOG-TO-DIGITAL CONVERTER

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ADS1258MRTCTEP 数据手册

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ADS1258-EP  
www.ti.com  
SBAS445C –MARCH 2009–REVISED DECEMBER 2009  
16-CHANNEL, 24-BIT ANALOG-TO-DIGITAL CONVERTER  
Check for Samples: ADS1258-EP  
1
FEATURES  
APPLICATIONS  
•
•
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•
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Medical, Avionics, and Process Control  
Machine and System Monitoring  
Fast Scan Multi-Channel Instrumentation  
Industrial Systems  
23  
•
24 Bits, No Missing Codes  
•
Fixed-Channel or Automatic Channel Scan  
Fixed-Channel Data Rate: 125 kSPS  
Auto-Scan Data Rate: 23.7 kSPS/Channel  
Single-Conversion Settled Data  
•
•
•
•
•
•
•
•
Test and Measurement Systems  
16 Single-Ended or 8 Differential Inputs  
Unipolar (5 V) or Bipolar (±2.5 V) Operation  
Low Noise: 2.8 μVRMS at 1.8kSPS  
0.0003% Integral Nonlinearity  
SUPPORTS DEFENSE, AEROSPACE,  
AND MEDICAL APPLICATIONS  
•
•
•
•
Controlled Baseline  
One Assembly/Test Site  
One Fabrication Site  
DC Stability (typical):  
0.02 μV/°C Offset Drift, 0.4 ppm/°C Gain Drift  
Available in Military (–55°C/125°C) and  
Industrial (–40°C/105°C) Temperature Ranges(1)  
•
•
•
Open-Sensor Detection  
Conversion Control Pin  
•
•
•
Extended Product Life Cycle  
Extended Product-Change Notification  
Product Traceability  
Multiplexer Output for External Signal  
Conditioning  
•
On-Chip Temperature, Reference, Offset, Gain,  
and Supply Voltage Readback  
•
•
•
•
42-mW Power Dissipation  
Standby, Sleep, and Power-Down Modes  
8 General-Purpose Inputs/Outputs (GPIO)  
32.768-kHz Crystal Oscillator or External Clock  
(1) Custom temperature ranges available  
DESCRIPTION  
The ADS1258 is a 16-channel (multiplexed), low-noise, 24-bit, delta-sigma (ΔΣ) analog-to-digital converter (ADC)  
that provides single-cycle settled data at channel scan rates from 1.8k to 23.7k samples per second (SPS) per  
channel. A flexible input multiplexer accepts combinations of eight differential or 16 single-ended inputs with a  
full-scale differential range of 5 V or true bipolar range of ±2.5 V when operating with a 5-V reference. The  
fourth-order delta-sigma modulator is followed by a fifth-order sinc digital filter optimized for low-noise  
performance.  
The differential output of the multiplexer is accessible to allow signal conditioning prior to the input of the ADC.  
Internal system monitor registers provide supply voltage, temperature, reference voltage, gain, and offset data.  
An onboard PLL generates the system clock from a 32.768-kHz crystal, or can be overridden by an external  
clock source. A buffered system clock output (15.7 MHz) is provided to drive a microcontroller or additional  
converters.  
Serial digital communication is handled via an SPI™ -compatible interface. A simple command word structure  
controls channel configuration, data rates, digital I/O, monitor functions, etc.  
Programmable sensor bias current sources can be used to bias sensors or verify sensor integrity.  
The ADS1258 operates from a unipolar 5-V or bipolar ±2.5-V analog supply and a digital supply compatible with  
interfaces ranging from 2.7 V to 5.25 V. The ADS1258 is available in QFN-48 and QFP-48 packages.  
1
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.  
2
3
SPI is a trademark of Motorola, Inc.  
All other trademarks are the property of their respective owners.  
PRODUCTION DATA information is current as of publication date.  
Products conform to specifications per the terms of the Texas  
Instruments standard warranty. Production processing does not  
necessarily include testing of all parameters.  
Copyright © 2009, Texas Instruments Incorporated  
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ADS1258MRTCTEP 替代型号

型号 品牌 替代类型 描述 数据表
ADS1258IRTCRG4 TI

类似代替

 16-Channel, 24-Bit Analog-to-Digital Converter
ADS1258IRTCT TI

类似代替

 16-Channel, 24-Bit Analog-to-Digital Converter
ADS1258IRTCR TI

类似代替

 16-Channel, 24-Bit Analog-to-Digital Converter

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