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
类型 | 项目标题 | 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) | 17 Sep 2013 | |||
应用手册 | 计算 Δ-Σ ADC 的转换延迟和系统周期时间 | PDF | HTML | 23 Mar 2022 | |||
应用手册 | 电桥测量基本指南 | PDF | HTML | 18 Feb 2022 | |||
白皮书 | 设计一份精确的多功能锂离子电池测试解决方案 | 下载英文版本 | 10 Nov 2020 | |||
白皮书 | Designing an Accurate, Multifunction Lithium-Ion Battery-Testing Solution.. | 10 Nov 2020 | ||||
电子书 | Fundamentals of Precision ADC Noise Analysis | 19 Jun 2020 | ||||
用户指南 | ADS1256EVM Evaluation Module User's Guide (Rev. E) | 14 Nov 2018 | ||||
应用手册 | Digital Filter Types in Delta Sigma ADCs | PDF | HTML | 27 Jun 2017 | |||
模拟设计期刊 | How delta-sigma ADCs work, Part 1 (Rev. A) | 19 Sep 2016 | ||||
应用手册 | Measuring Single-Ended 0V-5V Signals with Differential Delta-Sigma ADCs (Rev. A) | 18 May 2015 | ||||
电子书 | Best of Baker's Best: Precision Data Converters -- Delta-Sigma ADCs | 19 Mar 2015 | ||||
模拟设计期刊 | ΔΣ ADC工作原理 | 下载英文版本 | 13 Jan 2012 | |||
应用手册 | 所选封装材料的热学和电学性质 | 16 Oct 2008 | ||||
应用手册 | 模数规格和性能特性术语表 (Rev. A) | 下载最新的英文版本 (Rev.B) | 16 Oct 2008 | |||
应用手册 | 高速数据转换 | 下载英文版本 | 16 Oct 2008 | |||
应用手册 | Using Ceramic Resonators with the ADS1255/6 | 09 Jul 2004 |
设计和开发
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ADS1256EVM-PDK — ADS1256 性能演示套件
ADS1256EVM-PDK 是一套完整的评估/演示套件,它将 ADS1256EVM 与基于 DSP 的 MMB0 主板组合在一起,可与个人电脑配合使用。MMB0 主板允许 ADS1256EVM 通过 USB 端口连接到计算机。ADS1256EVM-PDK 由使用插件的 ADCPro™ 评估软件控制。该软件可以在 Microsoft™ Windows 操作系统中运行,可实现对 ADS1256 器件的完整评估。
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ADC-INPUT-CALC Analog-to-digital converter (ADC) input driver design tool supporting multiple input types
ANALOG-ENGINEER-CALC 模拟工程师计算器
封装 | 引脚数 | 下载 |
---|---|---|
SSOP (DB) | 28 | 了解详情 |
订购和质量
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- MSL 等级/回流焊峰值温度
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