ADS1246
- 24 Bits, No Missing Codes
- Programmable Data Rates Up to 2 kSPS
- Single-Cycle Settling for All Data Rates
- Simultaneous 50-Hz and 60-Hz Rejection at 20 SPS
- Analog Multiplexer With 8 (ADS1248) and 4
(ADS1247) Independently Selectable Inputs - Low-Noise PGA: 48 nVRMS at PGA = 128
- Dual-Matched Programmable Excitation Current Sources
- Low-Drift Internal 2.048-V Reference:
10 ppm/°C (Maximum) - Sensor Burn-Out Detection
- 4 or 8 General-Purpose I/Os (ADS1247, ADS1248)
- Internal Temperature Sensor
- Power Supply and VREF Monitoring (ADS1247, ADS1248)
- Self and System Calibration
- SPI™-Compatible Serial Interface
- Analog Supply: Unipolar (2.7 V to 5.25 V) and Bipolar (±2.5 V) Operation
- Digital Supply: 2.7 V to 5.25 V
- Operating Temperature –40°C to 125°C
- APPLICATIONS
- Temperature Sensor Measurements:
- RTDs, Thermocouples, and Thermistors
- Pressure Measurements
- Flow Meters
- Factory Automation and Process Controls
- Temperature Sensor Measurements:
All other trademarks are the property of their respective owners
The ADS1246, ADS1247, and ADS1248 are highly-integrated, precision, 24-bit analog-to-digital converters (ADCs). The devices feature an onboard, low-noise, programmable gain amplifier (PGA), a precision delta-sigma (ΔΣ) ADC with a single-cycle settling digital filter, and an internal oscillator. The ADS1247 and ADS1248 also provide a built-in, very low drift voltage reference with 10-mA output capacity, and two matched programmable current digital-to-analog converters (DACs). The devices provide a complete front-end solution for temperature sensor applications including thermal couples, thermistors, and resistance temperature detectors (RTDs).
An input multiplexer supports four differential inputs for the ADS1248, two for the ADS1247, and one for the ADS1246. In addition, the multiplexer has a sensor burn-out detect, voltage bias for thermocouples, system monitoring, and general-purpose digital I/Os (ADS1247 and ADS1248). The onboard, low-noise PGA provides selectable gains of 1 to 128. The ΔΣ modulator and adjustable digital filter settle in only one cycle, for fast channel cycling when using the input multiplexer, and support data rates up to 2 kSPS. For data rates of 20 SPS or less, both 50-Hz and 60-Hz interference are rejected by the filter.
技術文件
類型 | 標題 | 日期 | ||
---|---|---|---|---|
* | Data sheet | ADS124x 24-Bit, 2-kSPS, Analog-To-Digital Converters With Programmable Gain Amplifier (PGA) For Sensor Measurement datasheet (Rev. H) | PDF | HTML | 2016年 3月 31日 |
Application note | K-type thermocouple measurement circuit with precision ADC (Rev. A) | PDF | HTML | 2024年 9月 20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 Thermocouple Measurements (Rev. A) | PDF | HTML | 2023年 3月 29日 | |
Application note | Digital Filter Types in Delta-Sigma ADCs (Rev. A) | PDF | HTML | 2023年 3月 29日 | |
E-book | Fundamentals of Precision ADC Noise Analysis | 2020年 6月 19日 | ||
E-book | Best of Baker's Best: Precision Data Converters -- Delta-Sigma ADCs | 2015年 3月 19日 | ||
Application note | Inputs Currents for High-Resolution ADCs | 2003年 3月 6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)。
ADS1248EVM-PDK — 適用於 24 位元、2-kSPS、八通道 ΔΣ ADC 的 ADS1248 性能展示套件
ADS1248 評估模組 (EVM) 性能展示套件 (PDK) 是一款評估 ADS1248 八通道、24 位元、高精密 delta-sigma (ΔΣ) 類比數位轉換器 (ADC) 的平台。EVM 採用可輕鬆接受各種類型類比溫度感測器的設計,包括電阻溫度偵測器 (RTD)、熱電偶和熱敏電阻。
該套件包括 ADS1248EVM 及精密 ADC 主機板 (PAMBoard)。評估軟體讓使用者能透過通用序列匯流排 (USB) 與 ADC 通訊、擷取資料並執行資料分析。
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 |
---|---|---|
TSSOP (PW) | 16 | 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。