Texas Instruments ADS124S0x低功耗模数转换器
Texas Instruments ADS124S0x低功率模数转换器(ADC)是一款精密的24位、Δ-Σ模数转换器，功耗极低。ADS124S0x具有多种集成功能，可在测量小信号传感器的应用中降低系统成本和元件数量。该款模数转换器具有可配置的数字滤波器，在嘈杂的工业环境中可提供低延迟转换结果和50Hz或60Hz噪声抑制。
These Texas Instruments ADCs feature configurable digital filters that offer low-latency conversion results and 50Hz or 60Hz rejection for noisy industrial environments. A low-noise, programmable gain amplifier (PGA) provides gains ranging from 1 to 128 to amplify low-level signals for resistive bridge or thermocouple applications.
Additionally, these devices integrate a low-drift, 2.5V reference that reduces printed circuit board (PCB) area. Finally, two programmable excitation current sources (IDACs) allow for easy and accurate RTD biasing.
特性
- Low power consumption (as low as 280μA)
- Low-noise PGA (19nVRMS at gain = 128)
- 1 to 128 programmable gain
- 2.5SPS to 4kSPS programmable data rates
- Simultaneous 50Hz and 60Hz rejection at ≤ 20 SPS with low-latency digital filter
- Analog multiplexer with 12 (ADS124S08) or 6 (ADS124S06) independently selectable inputs
- Dual-matched programmable current sources for sensor excitation (10μA to 2000μA)
- 2.5V, 10ppm/°C (max) drift internal reference
- 4.096MHz, 1.5% accuracy internal oscillator
- Internal temperature sensor
- Extended fault detection circuits
- Self offset and system calibration
- Four general-purpose I/Os
- SPI-compatible interface with optional CRC
- Unipolar (2.7V to 5.25V) or bipolar (±2.5V) analog supply
- 2.7V to 3.6V digital Supply
- –50°C to +125°C operating temperature:
应用
- Sensor transducers and transmitters (temperature, pressure, strain, flow)
- PLC and DCS analog input modules
- Temperature controllers
- Climate chambers, industrial ovens
视频
Block Diagram
Evaluation Module
Texas Instruments ADS124S08EVM评估模块
为评估ADS124S08 Δ-Σ模数转换器提供硬件和软件支持。
发布日期: 2016-12-27
| 更新日期: 2022-03-11