The ADS1271 is a 24-bit, delta-sigma analog-to-digital converter (ADC) with a data rate up to 105kSPS. It offers a unique combination of excellent DC accuracy and outstanding AC performance. The high-order, chopper-stabilized modulator achieves very low drift with low in-band noise. The onboard decimation filter suppresses modulator and signal out-of-band noise. The ADS1271 provides a usable signal bandwidth up to 90% of the Nyquist rate with less than 0.005dB of ripple.

Traditionally, industrial delta-sigma ADCs offering good drift performance use digital filters with large passband droop. As a result, they have limited signal bandwidth and are mostly suited for DC measurements. High-resolution ADCs in audio applications offer larger usable bandwidths, but the offset and drift specification are significantly weaker than their industrial counterparts. The ADS1271 combines these converters, allowing high-precision industrial measurement with excellent DC and AC specifications ensured over an extended industrial temperature range.

Three operating modes allow for optimization of speed, resolution, and power. A selectable SPI or a frame-sync serial interface provides for convenient interfacing to microcontrollers or DSPs. The output from the modulator is accessible for external digital filter applications. All operations, including internal offset calibration, are controlled directly by pins; there are no registers to program.

• 105kSPS Data Rate
• AC Performance: 51kHz Bandwidth 109dB SNR (High-Resolution Mode) –108dB THD
• DC Accuracy: 1.8μV/°C Offset Drift 2ppm/°C Gain Drift
• Selectable Operating Modes: High-Speed: 105kSPS Data Rate High-Resolution: 109dB SNR Low-Power: 35mW Dissipation
• Power-Down Control
• Digital Filter: Linear Phase Response Passband Ripple: ±0.005dB Stop Band Attenuation: 100dB
• Internal Offset Calibration On Command
• Selectable SPI&? or Frame Sync Serial Interface
• Designed for Multichannel Systems: Daisy-Chainable Serial Interface Easy Synchronization
• Simple Pin-Driven Control
• Modulator Output Option
• Specified from –40°C to +105°C
• Analog Supply: 5V
• Digital Supply: 1.8V to 3.3V
• APPLICATIONS
  • Vibration/Modal Analysis
  • Acoustics
  • Dynamic Strain Gauges
  • Pressure Sensors
  • Test and Measurement

SPI is a trademark of Motorola Inc. All other trademarks are the property of their respective owners.

• Resolution (Bits)
• 24
• Number of input channels
• 1
• Sample rate (Max) (kSPS)
• 105
• Interface type
• SPI
• Architecture
• Delta-Sigma
• Input type
• Differential
• Multi-channel configuration
• —
• Rating
• Catalog
• Reference mode
• Ext
• Input range (Max) (V)
• 5.25
• Input range (Min) (V)
• 0
• Features
• Daisy-Chainable, Wideband
• Operating temperature range (C)
• -40 to 105
• Power consumption (Typ) (mW)
• 92
• Analog voltage AVDD (Min) (V)
• 4.75
• SNR (dB)
• 109
• Analog voltage AVDD (Max) (V)
• 5.25
• Digital supply (Min) (V)
• 1.65
• Digital supply (Max) (V)
• 3.6

ADS1271的完整型号有：ADS1271IBPW、ADS1271IBPWR、ADS1271IPW、ADS1271IPWR，以下是这些产品的关键参数及官网采购报价：

ADS1271IBPW，工作温度：-40 to 105，封装：TSSOP (PW)-16，包装数量MPQ：90个，MSL 等级/回流焊峰值温度：Level-2-260C-1 YEAR，引脚镀层/焊球材料：NIPDAU，TI官网ADS1271IBPW的批量USD价格：9.467（1000+）

ADS1271IBPWR，工作温度：-40 to 105，封装：TSSOP (PW)-16，包装数量MPQ：2000个，MSL 等级/回流焊峰值温度：Level-2-260C-1 YEAR，引脚镀层/焊球材料：NIPDAU，TI官网ADS1271IBPWR的批量USD价格：8.246（1000+）

ADS1271IPW，工作温度：-40 to 105，封装：TSSOP (PW)-16，包装数量MPQ：90个，MSL 等级/回流焊峰值温度：Level-2-260C-1 YEAR，引脚镀层/焊球材料：NIPDAU，TI官网ADS1271IPW的批量USD价格：7.33（1000+）

ADS1271IPWR，工作温度：-40 to 105，封装：TSSOP (PW)-16，包装数量MPQ：2500个，MSL 等级/回流焊峰值温度：Level-2-260C-1 YEAR，引脚镀层/焊球材料：NIPDAU，TI官网ADS1271IPWR的批量USD价格：6.108（1000+）

ADS1271EVM — ADS1271 评估模块 (EVM)

The ADS1271EVM is a circuit board for use with the ADS1271 24-bit analog-to-digital converter. Two ADS1271 devices are installed on this board to demonstrate multiple parts operating in a simultaneously sampled, daisy-chained configuration. The installed ADS1271s can be configured to operate in any (...)

ADS1271EVM-PDK — ADS1271 性能演示套件 (PDK)

The ADS1271EVM-PDK is a complete evaluation kit for the ADS1271, which includes an ADS1271EVM and a USB-connected DSP-based motherboard and evaluation software for use with a personal computer running Microsoft Windows XP operating systems. With this software, the operational modes of the ADS1271 (...)

PP-SALB2-EVM — PP-SALB2-EVM 智能放大器扬声器特性板评估模块（学习板 2）

该板支持：TAS2555YZEVM、TAS2557EVM 和 TAS2559EVM。

智能放大器扬声器特性评估板与支持的 TI 智能放大器和 PurePath 控制台软件一起使用时，可让用户测量扬声器与 TI 智能放大器产品结合使用时的偏移、温度及其他参数。整个解决方案通过一套易于使用和循序渐进的流程来指导您完成整个扬声器特性评估过程。一旦特性评估完成，扬声器参数随后将自动载入到 PurePath 控制台中，以便开始进行精细调优以实现最佳音质及扬声器保护。

ADS1271 IBIS Model

PSpice for TI 可提供帮助评估模拟电路功能的设计和仿真环境。此功能齐全的设计和仿真套件使用 Cadence 的模拟分析引擎。PSpice for TI 可免费使用，包括业内超大的模型库之一，涵盖我们的模拟和电源产品系列以及精选的模拟行为模型。

借助?PSpice for TI 的设计和仿真环境及其内置的模型库，您可对复杂的混合信号设计进行仿真。创建完整的终端设备设计和原型解决方案，然后再进行布局和制造，可缩短产品上市时间并降低开发成本。

在?PSpice for TI 设计和仿真工具中，您可以搜索 TI (...)

TINA-TI — 基于 SPICE 的模拟仿真程序

TINA-TI 提供了 SPICE 所有的传统直流、瞬态和频域分析以及更多。TINA 具有广泛的后处理功能，允许您按照希望的方式设置结果的格式。虚拟仪器允许您选择输入波形、探针电路节点电压和波形。TINA 的原理图捕获非常直观 - 真正的“快速入门”。

TINA-TI 安装需要大约 500MB。直接安装，如果想卸载也很容易。我们相信您肯定会爱不释手。

TINA 是德州仪器 (TI) 专有的 DesignSoft 产品。该免费版本具有完整的功能，但不支持完整版 TINA 所提供的某些其他功能。

如需获取可用 TINA-TI 模型的完整列表，请参阅：SpiceRack - 完整列表

需要 HSpice (...)

ADC-INPUT-CALC — Analog-to-digital converter (ADC) input driver design tool supporting multiple input types

ADC-INPUT-CALC 是一种在线工具，可为设计模数转换器 (ADC) 的输入缓冲器提供支持。它提供 24 种不同的基于运算放大器的缓冲器电路，这些电路可用于驱动 ADC 输入。可用拓扑涵盖差分单端和变压器耦合输入设计。支持交流耦合和直流耦合设计以及单电源和双电源拓扑。提供两种模式：初学者模式和专家模式。在初学者模式中，设计人员先回答一系列问题，然后会看到解决方案原理图，在某些情况下，还会看到解决方案的可选版本。在专家模式下，设计人员会看到用方框图形式显示的所有 24 (...)

ADS1271-EXCEL-CALC-TOOL — ADS1271 Excel 计算器工具

The ADS1271 Excel calculator tool provides the user with several easy-to-use tools to simplify the configuration of the ADS1271. The tool helps the user understand the different settings and operating modes that aid in optimizing a design with the ADS1271 wide-bandwidth analog-to-digital converter (...)

ANALOG-ENGINEER-CALC — 模拟工程师计算器

模拟工程师计算器旨在加快模拟电路设计工程师经常使用的许多重复性计算。该基于 PC 的工具提供图形界面，其中显示各种常见计算的列表（从使用反馈电阻器设置运算放大器增益到为稳定模数转换器 (ADC) 驱动器缓冲器电路选择合适的电路设计元件）。除了可用作单独的工具之外，该计算器还能够很好地与模拟工程师口袋参考书中所述的概念配合使用。 lock = 需要出口许可（1分钟）