ADS1256
- 24 Bits, No Missing Codes
- All Data Rates and PGA Settings
- Up to 23 Bits Noise-Free Resolution
- ±0.0010% Nonlinearity (max)
- Data Output Rates to 30kSPS
- Fast Channel Cycling
- 18.6 Bits Noise-Free (21.3 Effective Bits) at 1.45kHz
- One-Shot Conversions with Single-Cycle Settling
- Flexible Input Multiplexer with Sensor Detect
- Four Differential Inputs (ADS1256 only)
- Eight Single-Ended Inputs (ADS1256 only)
- Chopper-Stabilized Input Buffer
- Low-Noise PGA: 27nV Input-Referred Noise
- Self and System Calibration for All PGA Settings
- 5V Tolerant SPI™-Compatible Serial Interface
- Analog Supply: 5V
- Digital Supply: 1.8V to 3.6V
- Power Dissipation
- As Low as 38mW in Normal Mode
- 0.4mW in Standby Mode
The ADS1255 and ADS1256 are extremely low-noise, 24-bit analog-to-digital (A/D) converters. They provide complete high-resolution measurement solutions for the most demanding applications.
The converter is comprised of a 4th-order, delta-sigma (ΔΣ) modulator followed by a programmable digital filter. A flexible input multiplexer handles differential or single-ended signals and includes circuitry to verify the integrity of the external sensor connected to the inputs. The selectable input buffer greatly increases the input impedance and the low-noise programmable gain amplifier (PGA) provides gains from 1 to 64 in binary steps. The programmable filter allows the user to optimize between resolution of up to 23 bits noise-free and data rate of up to 30k samples per second (SPS). The converters offer fast channel cycling for measuring multiplexed inputs and can also perform one-shot conversions that settle in just a single cycle.
Communication is handled over an SPI-compatible serial interface that can operate with a 2-wire connection. Onboard calibration supports both self and system correction of offset and gain errors for all the PGA settings. Bidirectional digital I/Os and a programmable clock output driver are provided for general use. The ADS1255 is packaged in an SSOP-20, and the ADS1256 in an SSOP-28.
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 | Very Low Noise, 24-Bit Analog-to-Digital Converter 数据表 (Rev. K) | 2013-9-17 | |||
| 应用手册 | 计算 Δ-Σ ADC 的转换延迟和系统周期时间 (Rev. A) | PDF | HTML | 英语版 (Rev.A) | PDF | HTML | 2024-3-27 | |
| 应用手册 | 电桥测量基本指南 (Rev. A) | PDF | HTML | 英语版 (Rev.A) | PDF | HTML | 2024-3-8 | |
| 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 | |
| 白皮书 | 设计一份精确的多功能锂离子电池测试解决方案 | 英语版 | 2020-11-10 | |||
| 电子书 | Fundamentals of Precision ADC Noise Analysis (Rev. A) | 2020-6-19 | ||||
| 用户指南 | ADS1256EVM and ADS1256EVM-PDK (Rev. E) | 2018-11-14 | ||||
| 模拟设计期刊 | How delta-sigma ADCs work, Part 1 (Rev. A) | 2016-9-19 | ||||
| 应用手册 | Measuring Single-Ended 0V-5V Signals with Differential Delta-Sigma ADCs (Rev. A) | 2015-5-18 | ||||
| 电子书 | Best of Baker's Best: Precision Data Converters -- Delta-Sigma ADCs | 2015-3-19 | ||||
| 模拟设计期刊 | ΔΣ ADC工作原理 | 英语版 | 2012-1-13 | |||
| 应用手册 | Using Ceramic Resonators with the ADS1255/6 | 2004-7-9 |
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）。
ADS1256EVM-PDK — ADS1256 性能演示套件
ADS1256EVM-PDK 是一款完整的评估/演示套件，可将 ADS1256EVM 与基于 DSP 的 MMB0 主板组合在一起，从而与个人计算机配合使用。MMB0 主板支持 ADS1256EVM 通过 USB 端口与计算机相连。ADS1256EVM-PDK 由 ADCPro™ 评估软件通过插件进行控制。该软件专为在 Microsoft™ Windows 操作系统中运行而设计，可实现对 ADS1256 器件的完整评估。
ADS1256-C-EXAMPLE-CODE — ADS1256 example C code
SBAC145 — ADS1255-7 Design Calculator
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 |
|---|---|---|
| SSOP (DB) | 28 | Ultra Librarian |
订购和质量
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