ADS1248
- 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.
技术文档
设计和开发
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ADS1248EVM-PDK — 适用于 ADS1248 24 位 2kSPS 八通道 Δ-Σ ADC 的性能演示套件
ADS1248 评估模块 (EVM) 性能演示套件 (PDK) 是一个用于评估 ADS1248 八通道 24 位高精度 Δ-Σ (ΔΣ) 模数转换器 (ADC) 的平台。该 EVM 可轻松接受多种类型的模拟温度传感器,包括电阻式温度检测器 (RTD)、热电偶和热敏电阻。
该套件包括 ADS1248EVM 和精密 ADC 主板 (PAMBoard)。借助评估软件,用户能够通过通用串行总线 (USB) 与 ADC 进行通信、采集数据,还可以执行数据分析。
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 (...)
支持的产品和硬件
产品
精密运算放大器 (Vos<1mV)
通用运算放大器
音频运算放大器
跨阻放大器
高速运算放大器 (GBW ≥ 50MHz)
功率运算放大器
视频放大器
线路驱动器
跨导放大器和激光驱动器
全差分放大器
精密 ADC
生物传感 AFE
高速 ADC (≥10MSPS)
触摸屏控制器
差分放大器
仪表放大器
音频线路接收器
模拟电流检测放大器
数字功率监控器
配备集成型电流采样电阻的模拟电流检测放大器
配备集成型电流采样电阻的数字功率监控器
芯片与晶圆服务
射频接收器
射频发射器
ADC-DAC-TO-VREF-SELECT-DESIGN-TOOL — The ADC-TO-VREF-SELECT tool enables the pairing of TI ADCs, DACs, and series voltage references.
支持的产品和硬件
产品
串联电压基准
精密 ADC
生物传感 AFE
集成型精密 ADC 和 DAC
高速 ADC (≥10MSPS)
精密 DAC (≤10MSPS)
PSPICE-FOR-TI — 适用于 TI 设计和模拟工具的 PSpice®
借助 PSpice for TI 的设计和仿真环境及其内置的模型库,您可对复杂的混合信号设计进行仿真。创建完整的终端设备设计和原型解决方案,然后再进行布局和制造,可缩短产品上市时间并降低开发成本。
在 PSpice for TI 设计和仿真工具中,您可以搜索 TI (...)
TINA-TI — 基于 SPICE 的模拟仿真程序
TINA-TI 安装需要大约 500MB。直接安装,如果想卸载也很容易。我们相信您肯定会爱不释手。
TINA 是德州仪器 (TI) 专有的 DesignSoft 产品。该免费版本具有完整的功能,但不支持完整版 TINA 所提供的某些其他功能。
如需获取可用 TINA-TI 模型的完整列表,请参阅:SpiceRack - 完整列表
需要 HSpice (...)
TIPD120 — 0-100°C、0.005 %FSR、比例式 3 线 RTD 采集系统
TIDA-00463 — 基于磁通门的位移传感器参考设计
TIDA-00110 — 在智能电网应用中采用 RTD 进行温度检测的模拟前端 (AFE) 参考设计
封装 | 引脚 | CAD 符号、封装和 3D 模型 |
---|---|---|
TSSOP (PW) | 28 | Ultra Librarian |
订购和质量
- RoHS
- REACH
- 器件标识
- 引脚镀层/焊球材料
- MSL 等级/回流焊峰值温度
- MTBF/时基故障估算
- 材料成分
- 鉴定摘要
- 持续可靠性监测
- 制造厂地点
- 封装厂地点
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