ADS1271
- 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.
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.
技术文档
| 顶层文档 | 类型 | 标题 | 格式选项 | 下载最新的英语版本 | 日期 | |
|---|---|---|---|---|---|---|
| * | 数据表 | 24-Bit, Wide Bandwidth Analog-to-Digital Converter 数据表 (Rev. F) | 2007-10-23 | |||
| 应用手册 | Δ-Σ ADC 中的数字滤波器类型 (Rev. A) | PDF | HTML | 英语版 (Rev.A) | PDF | HTML | 2023-4-13 | |
| 电子书 | Fundamentals of Precision ADC Noise Analysis (Rev. A) | 2020-6-19 | ||||
| 白皮书 | Voltage-reference impact on total harmonic distortion | 2016-8-1 | ||||
| 电子书 | Best of Baker's Best: Precision Data Converters -- Delta-Sigma ADCs | 2015-3-19 | ||||
| 应用手册 | Synchronizing the ADS1271 | 2005-10-27 |
设计与开发
如需其他信息或资源，请点击以下任一标题进入详情页面查看（如有）。
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）
此电路板支持：TAS2555YZEVM、TAS2557EVM 和 TAS2559EVM。
智能放大器扬声器特性鉴定板与配套的 TI 智能放大器和 PurePath Console 软件配合使用时，可让用户测量扬声器偏移、温度和其他参数，以便与 TI 智能放大器产品配合使用。 整个解决方案提供了易用的分步流程，可指导您完成整个扬声器特性描述过程。 表征完成后，扬声器参数随后会自动加载到 PurePath Console，因此可以开始进行微调，通过扬声器保护实现出色音质。
ADS1271-EXCEL-CALC-TOOL — ADS1271 Design Calculator
- ADS1271 Excel 计算器工具为用户提供多种易于使用的工具，可他们简化 ADS1271 的配置。该工具可帮助用户了解不同的设置和运行模式，以便优化使用 ADS1271 宽带宽模数转换器 (ADC) 进行的设计。该工具包括 ADC 转换计算器、数字滤波器响应计算器、菊花链配置选项卡和 SNR 评估器。ADS1271 计算器可以消除常见的编程和器件设置障碍，从而缩短上市时间。
ANALOG-ENGINEER-CALC — PC software analog engineer's calculator
模拟工程师计算器旨在加快模拟电路设计工程师经常运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列表，从使用反馈电阻器设置运算放大器增益到选择合适的电路设计元件，以稳定模数转换器 (ADC) 驱动器缓冲器电路。
除了可用作独立工具之外，该计算器还能很好地与模拟工程师口袋参考中所述的概念配合使用。
ADC-DAC-TO-VREF-SELECT-DESIGN-TOOL — The ADC-TO-VREF-SELECT tool enables the pairing of TI ADCs, DACs, and series voltage references.
| 封装 | 引脚 | CAD 符号、封装和 3D 模型 |
|---|---|---|
| TSSOP (PW) | 16 | Ultra Librarian |
订购和质量
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