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ADS1231 低噪声、24 位模数转换器

ADS1231 说明

The ADS1231 is a precision, 24-bit analog-to-digital converter (ADC). With an onboard, low-noise amplifier, onboard oscillator, precision 24-bit delta-sigma () ADC, and bridge power switch, the ADS1231 provides a complete front-end solution for bridge sensor applications including weigh scales, strain gauges, and load cells.

The low-noise amplifier has a gain of 128, supporting a full-scale differential input of ±19.5mV. The ADC has 24-bit effective resolution and is comprised of a third-order modulator and fourth-order digital filter. Two data rates are supported: 10SPS (with both 50Hz and 60Hz rejection) and 80SPS. The ADS1231 can be clocked by the internal oscillator or an external clock source. The ADS1231 can be put in a low-power standby mode or shut off completely in power-down mode.

ADS1130 ADS1131 ADS1230 ADS1231 ADS1232 ADS1234
Resolution(Bits) 18 20 24 24
Sample Rate (max) 80SPS 80SPS 80SPS 80SPS 80SPS
Architecture Delta-Sigma Delta-Sigma Delta-Sigma Delta-Sigma Delta-Sigma Delta-Sigma
Power Consumption(Typ)(mW) 2.9 2.9 2.9 2.9 4.3 4.3
DNL(Max)(+/-LSB) 1 1 1 1 1 1
INL(Max)(+/-LSB) 0.0006% 0.0006% 0.0006% 0.0002% 0.0002%
No Missing Codes(Bits) 18 18 20 24 24 24
ENOB(Bits) 17.5 17.5 19.5 23.5 23.5 23.5
No. of Supplies 2 2 2 2 2 2
Analog Voltage AV/DD(Min)(V) 2.7 2.7 2.7 2.7 2.7 2.7
Analog Voltage AV/DD(Max)(V) 5.3 5.3 2.3 5.3 5.3 5.3
Logic Voltage DV/DD(Min)(V) 2.7 2.7 2.7 2.7 2.7
Logic Voltage DV/DD(Max)(V) 5.3 5.3 5.3 5.3 5.3
Input Configuration Range 0.5Vref/PGA (1,2,64) 0.5Vref/PGA 0.5Vref/PGA (1,2,64,128) 0.5Vref/PGA 0.5Vref/PGA (1,2,64,128) 0.5Vref/PGA (1,2,64,128)
Reference Mode Ext Ext Ext EXT Ext Ext
Rating Catalog Catalog Catalog Catalog Catalog Catalog
Pin/Package 16TSSOP 16TSSOP 16TSSOP 16TSSOP 24TSSOP 28TSSOP
# Input Channels 1 1 1 1 2 4
Operating Temp Range(Celsius) -40 to 85 -40 to 85 -40 to 105 -40 to 105
ADS1231 特性
ADS1231 芯片订购指南
器件 状态 封装 | 引脚 封装数量 | 封装载体 丝印标记
ADS1231CPW PREVIEW TSSOP (PW) | 16 90  
ADS1231CPWR PREVIEW TSSOP (PW) | 16 2000  
ADS1231IPW PREVIEW TSSOP (PW) | 16 90  
ADS1231IPWR PREVIEW TSSOP (PW) | 16 2000  
ADS1231 应用技术支持与电子电路设计开发资源下载
  1. ADS1231 数据资料 dataSheet 下载.PDF
  2. TI 德州仪器仪ADC 模数转换器产品选型与价格 . xls
  3. 模数规格和性能特性术语表 (Rev. A) (PDF 1993 KB)
  4. 所选封装材料的热学和电学性质 (PDF 645 KB)
  5. 高速数据转换 (PDF 1967 KB)
  6. Shelf-Life Evaluation of Lead-Free Component Finishes (PDF 1305 KB)
  7. A Spreadsheet for Calculating the Frequency Response of the ADS1250-54 (PDF 461 KB)
  8. A Spreadsheet for Calculating the Frequency Response of the ADS1250-54
  9. Understanding the ADS1251, ADS1253, and ADS1254 Input Circuitry (PDF 39 KB)
  10. Analog-to-Digital Converter Grounding Practices Affect System Performance (PDF 56 KB)
  11. Principles of Data Acquisition and Conversion (PDF 50 KB)
  12. Interleaving Analog-to-Digital Converters (PDF 64 KB)
  13. What Designers Should Know About Data Converter Drift (PDF 95 KB)
  14. Giving Delta-Sigma Converters a Gain Boost with a Front End Analog Gain Stage (PDF 70 KB)
  15. Programming Tricks for Higher Conversion Speeds Utilizing Delta Sigma Converters (PDF 105 KB)
ADS1231 工具与软件
名称 型号 公司 工具/软件类型
ADS1231 评估模块 ADS1231EVM Texas Instruments  
用于模数转换器的抗混淆计算工具 ANTIALIASINGCALC Texas Instruments 计算实用程序
运算放大器至 ADC 电路拓扑计算器 ADC-INPUT-CALC Texas Instruments 计算实用程序