ADS1255
- 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.
技術文件
類型 | 標題 | 日期 | ||
---|---|---|---|---|
* | Data sheet | Very Low Noise, 24-Bit Analog-to-Digital Converter datasheet (Rev. K) | 2013年 9月 17日 | |
Application note | Calculating Conversion Latency and System Cycle Time for Delta-Sigma ADCs (Rev. A) | PDF | HTML | 2024年 3月 18日 | |
Application note | A Basic Guide to Bridge Measurements (Rev. A) | PDF | HTML | 2024年 3月 13日 | |
Application note | Digital Filter Types in Delta-Sigma ADCs (Rev. A) | PDF | HTML | 2023年 3月 29日 | |
White paper | 設計準確且多功能的鋰離子 電池測試解決方案 | 2020年 11月 10日 | ||
E-book | Fundamentals of Precision ADC Noise Analysis | 2020年 6月 19日 | ||
User guide | ADS1256EVM and ADS1256EVM-PDK (Rev. E) | 2018年 11月 14日 | ||
Application note | Measuring Single-Ended 0V-5V Signals with Differential Delta-Sigma ADCs (Rev. A) | 2015年 5月 18日 | ||
E-book | Best of Baker's Best: Precision Data Converters -- Delta-Sigma ADCs | 2015年 3月 19日 | ||
Application note | Seismic Sensor Demonstration Using an ADS1255 and TMS320VC5510A DSP (Rev. A) | 2009年 1月 29日 | ||
Application note | Using Ceramic Resonators with the ADS1255/6 | 2004年 7月 9日 |
設計與開發
如需其他條款或必要資源,請按一下下方的任何標題以檢視詳細頁面 (如有)。
ADS1256EVM-PDK — ADS1256 性能展示套件
The ADS1256EVM-PDK is a complete evaluation/demonstration kit, which combines the ADS1256EVM with the DSP-based MMB0 motherboard for use with a personal computer. The MMB0 motherboard allows the ADS1256EVM to connect to a computer via a USB port. The ADS1256EVM-PDK is controlled by the (...)
DLPNIRSCANEVM — DLP® NIRscan™ 評估模組
DLP NIRscan 是一套完整的評估模組 (EVM),可用來設計高性能、價格合理的近紅外線光譜儀。 這套靈活的工具包含設計人員所需的一切功能,可立即開始開發 DLP 架構光譜儀。 此 EVM 搭載 DLP 0.45 WXGA NIR 晶片組,是首款針對近紅外線 (NIR) 光進行最佳化的 DLP 晶片組。 光譜儀搭載 DLP 技術後,可用於食品、製藥、石油/天然氣及其他新興產業,將能在工廠與現場展現高水準的實驗室性能。進一步了解 Spectroscopy。
電源供應器另售。
SBAC145 — ADS1255-7 Design Calculator
支援產品和硬體
產品
精確 ADC
硬體開發
開發板
ANALOG-ENGINEER-CALC — PC software analog engineer's calculator
The analog engineer’s calculator is designed to speed up many of the repetitive calculations that analog circuit design engineers use on a regular basis. This PC-based tool provides a graphical interface with a list of various common calculations ranging from setting operational-amplifier (...)
支援產品和硬體
產品
精密度運算放大器 (Vos<1mV)
一般用途運算放大器
音訊運算放大器
轉阻放大器
高速運算放大器 (GBW ≥ 50 MHz)
功率運算放大器
視訊放大器
線路驅動器
轉導放大器與雷射驅動器
全差分放大器
精確 ADC
生物感測 AFE
高速 ADC (≥10 MSPS)
觸控式螢幕控制器
差分放大器
儀器放大器
音訊線路接收器
類比電流感測放大器
數位電源監測器
配備整合式分流電阻器的類比電流感測放大器
具整合式分流電阻器的數位電源監測器
晶粒與晶圓服務
RF 接收器
RF 發射器
ADC-DAC-TO-VREF-SELECT-DESIGN-TOOL — The ADC-TO-VREF-SELECT tool enables the pairing of TI ADCs, DACs, and series voltage references.
支援產品和硬體
產品
系列電壓參考
精確 ADC
生物感測 AFE
整合式精密 ADC 與 DAC
高速 ADC (≥10 MSPS)
精密 DAC (≤10 MSPS)
PSPICE-FOR-TI — PSpice® for TI 設計與模擬工具
TINA-TI — 基於 SPICE 的類比模擬程式
TIDA-00554 — 具有 Bluetooth 連線且適用於可攜式化學分析的 DLP 超行動 NIR 光譜儀
TIDA-00155 — 適用於液體和固體光學分析的 DLP 近紅外線光譜儀參考設計
封裝 | 針腳 | CAD 符號、佔位空間與 3D 模型 |
---|---|---|
SSOP (DB) | 20 | Ultra Librarian |
訂購與品質
- RoHS
- REACH
- 產品標記
- 鉛塗層/球物料
- MSL 等級/回焊峰值
- MTBF/FIT 估算值
- 材料內容
- 認證摘要
- 進行中持續性的可靠性監測
- 晶圓廠位置
- 組裝地點
建議產品可能具有與此 TI 產品相關的參數、評估模組或參考設計。