ADS1148 用于温度传感器的 16 位模数转换器

The ADS1146, ADS1147, and ADS1148 are highly-integrated, precision, 16-bit analog-to-digital converters (ADCs). The ADS1146/7/8 feature an onboard, low-noise, programmable gain amplifier (PGA), a precision delta-sigma ADC with a single-cycle settling digital filter, and an internal oscillator. The ADS1147 and ADS1148 also provide a built-in voltage reference with 10mA output capacity, and two matched programmable current digital-to-analog converters (DACs). The ADS1146/7/8 provide a complete front-end solution for temperature sensor applications including thermal couples, thermistors, and resistance temperature detectors (RTDs).

An input multiplexer supports four differential inputs for the ADS1148, two for the ADS1147, and one for the ADS1146.


ADS1146 ADS1147 ADS1148 ADS1246 ADS1247 ADS1248
Resolution(Bits) 16 16 16 24 24 24
Sample Rate (max) 2kSPS 2kSPS 2kSPS 2KSPS 2KSPS 2KSPS
Architecture Delta-Sigma Delta-Sigma Delta-Sigma Delta-Sigma Delta-Sigma Delta-Sigma
Power Consumption(Typ)(mW) 1.2 1.2 1.2 2.56 2.56 2.56
DNL(Max)(+/-LSB) 1 1 1 1 1 1
INL(Max)(+/-LSB) 0.0015%   0.0015%   0.0015%   0.0015% 0.0015% 0.0015%
No Missing Codes(Bits) 15 15 15 24 24 24
No. of Supplies 3 3 3 3 3 3
Analog Voltage AV/DD(Min)(V) 2.5 2.5 2.5 2.5 2.5 2.5
Analog Voltage AV/DD(Max)(V) 5.8 5.8 5.8 5.8 5.8 5.8
Logic Voltage DV/DD(Min)(V) 2.5 2.5 2.5 2.5 2.5 2.5
Logic Voltage DV/DD(Max)(V) 5.8 5.8 5.8 5.8 5.8 5.8
Input Configuration Range +/- Vref / PGA   +/- Vref / PGA   +/- Vref / PGA   +/- Vref / PGA +/- Vref / PGA +/- Vref / PGA
Reference Mode Ext Int and Ext   Int and Ext   Ext Int and Ext Int and Ext
Rating Catalog Catalog Catalog Catalog Catalog Catalog
Pin/Package 16TSSOP 20TSSOP 28TSSOP 16TSSOP 20TSSOP 28TSSOP
# Input Channels 1 3 7 1 3 7
Operating Temp Range(Celsius) -40 to 125 -40 to 125 -40 to 125 -40 to 105 -40 to 105 -40 to 105
ADS1148 特性
ADS1148 芯片订购指南
器件 状态 温度 (oC) 价格(美元) 封装 | 引脚
ADS1148IPW PREVIEW -40 to 125 5.15 | 1ku TSSOP (PW) | 28
ADS1148IPWR PREVIEW -40 to 125 3.95 | 1ku TSSOP (PW) | 28
ADS1148 工具与软件
名称 型号 公司 工具/软件类型
ADS1148 评估模块 ADS1148EVM Texas Instruments 开发电路板/EVM
ADS1148 性能演示套件 ADS1148EVM-PDK Texas Instruments 开发电路板/EVM
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
ADCPro™ 模数转换器评估软件 ADCPRO  Texas Instruments 应用软件 
ADS1148 应用技术支持与电子电路设计开发资源下载
  1. ADS1148 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)