Texas Instruments ADS124S0x低消費電力アナログデジタルコンバータ
Texas Instruments ADS124S0x低消費電力アナログデジタルコンバータ（ADC）は、高精度24ビットデルタシグマ型（ΔΣ）ADCで、低い消費電力が備わっています。ADS124S0xは、小信号を測定するセンサアプリケーションのシステムコストと部品点数を削減する多くの内蔵機能があります。これらのADCは、ノイズの多い産業用環境で使用できるよう、50Hzまたは60Hzのリジェクションと低レイテンシの変換結果を実現する、構成可能なデジタルフィルタを備えています。
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.
特徴
- 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:
アプリケーション
- Sensor transducers and transmitters (temperature, pressure, strain, flow)
- PLC and DCS analog input modules
- Temperature controllers
- Climate chambers, industrial ovens
ビデオ
Block Diagram
Evaluation Module
Texas Instruments ADS124S08EVM評価モジュール
ADS124S08デルタシグマADCの評価を目的としたハードウェアとソフトウエアのサポートを実現しています。
公開: 2016-12-27
| 更新済み: 2022-03-11