ADS1258
- 24 Bits, No Missing Codes
- Fixed-Channel or Automatic Channel Scan
- Fixed-Channel Data Rate: 125kSPS
- Auto-Scan Data Rate: 23.7kSPS/Channel
- Single-Conversion Settled Data
- 16 Single-Ended or 8 Differential Inputs
- Unipolar (+5V) or Bipolar (±2.5V) Operation
- Low Noise: 2.8µVRMS at 1.8kSPS
- 0.0003% Integral Nonlinearity
- DC Stability (typical):
0.02µV/°C Offset Drift, 0.4ppm/°C Gain Drift - Open-Sensor Detection
- Conversion Control Pin
- Multiplexer Output for External Signal Conditioning
- On-Chip Temperature, Reference, Offset, Gain, and Supply Voltage Readback
- 42mW Power Dissipation
- Standby, Sleep, and Power-Down Modes
- 8 General-Purpose Inputs/Outputs (GPIO)
- 32.768kHz Crystal Oscillator or External Clock
- APPLICATIONS
- Medical, Avionics, and Process Control
- Machine and System Monitoring
- Fast Scan Multi-Channel Instrumentation
- Industrial Systems
- Test and Measurement Systems
SPI is a trademark of Motorola, Inc.
All other trademarks are the property of their respective owners.
The ADS1258 is a 16-channel (multiplexed), low-noise, 24-bit, delta-sigma () analog-to-digital converter (ADC) that provides single-cycle settled data at channel scan rates from 1.8k to 23.7k samples per second (SPS) per channel. A flexible input multiplexer accepts combinations of eight differential or 16 single-ended inputs with a full-scale differential range of 5V or true bipolar range of ±2.5V when operating with a 5V reference. The fourth-order delta-sigma modulator is followed by a fifth-order sinc digital filter optimized for low-noise performance.
The differential output of the multiplexer is accessible to allow signal conditioning prior to the input of the ADC. Internal system monitor registers provide supply voltage, temperature, reference voltage, gain, and offset data.
An onboard PLL generates the system clock from a 32.768kHz crystal, or can be overridden by an external clock source. A buffered system clock output (15.7MHz) is provided to drive a microcontroller or additional converters.
Serial digital communication is handled via an SPI™-compatible interface. A simple command word structure controls channel configuration, data rates, digital I/O, monitor functions, etc.
Programmable sensor bias current sources can be used to bias sensors or verify sensor integrity.
The ADS1258 operates from a unipolar +5V or bipolar ±2.5V analog supply and a digital supply compatible with interfaces ranging from 2.7V to 5.25V. The ADS1258 is available in a QFN-48 package.
技術文件
設計與開發
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ADS1258EVM-PDK — ADS1258 性能展示套件
ADS1258 評估模組 (EVM) 性能展示套件 (PDK) 的功能可當做評估 ADS1258 類比轉數位轉換器 (ADC) 的平台。ADS1258 為一款適合速度更快,通道數多的工業應用的 125 kSPS、16 通道、24 位元 Delta Sigma ADC。
PDK 內含 ADS1258EVM、精密主機介面 (PHI) 控制器電路板,以及隨附的電腦軟體,可讓使用者透過通用序列匯流排 (USB) 與 ADC 通訊、擷取資料,以及執行資料分析。
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
封裝 | 針腳 | CAD 符號、佔位空間與 3D 模型 |
---|---|---|
VQFNP (RTC) | 48 | 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。