ADS131A02
- 2 or 4 simultaneous-sampling differential inputs
- Data rates up to 128 kSPS
- High performance:
- Single-channel accuracy: better than 0.1% at 10,000:1 dynamic range
- Effective resolution: 20.6 bits at 8 kSPS
- THD: –100 dB at 50 Hz and 60 Hz
- Integrated negative charge pump allows absolute input voltages below ground
- Flexible analog power-supply
operation:
- Using negative charge pump: 3.0 V to 3.45 V
- Unipolar supply: 3.3 V to 5.5 V
- Bipolar supply: ±2.5 V
- Digital supply: 1.65 V to 3.6 V
- Low-drift internal voltage reference: 6 ppm/°C
- ADC self checks
- Cyclic redundancy check (CRC) and hamming code error correction on communications
- Multiple SPI data interface
modes:
- Asynchronous interrupt
- Synchronous master and slave
- Package: 32-pin TQFP
- Operating temperature range:
–40°C to +125°C
The ADS131A02 and ADS131A04 devices are two- and four-channel, simultaneous-sampling, 24-bit, delta-sigma (ΔΣ), analog-to-digital converters (ADCs). The wide dynamic range, with scalable data rates up to 128 kSPS, and internal fault monitors make the ADS131A02 or ADS131A04 a good choice when designing for energy monitoring, grid protection, and control applications. The ADC inputs can be independently and directly interfaced to a resistor-divider network, a current transformer, or a Rogowski coil to measure voltage or current. Flexible power-supply options, including an internal negative charge pump, are available to maximize the effective resolution for high dynamic range applications.
Asynchronous and synchronous master and slave interface options are available, providing ADC configuration flexibility when chaining multiple devices in a single system. Several interface checks, ADC startup checks, and data integrity checks can be enabled on the interface to report errors in the ADC and during data transfer.
The complete analog front-end (AFE) solutions are packaged in a 32-pin TQFP package and are specified over the industrial temperature range of –40°C to +125°C.
技术文档
| 顶层文档 | 类型 | 标题 | 格式选项 | 下载最新的英语版本 | 日期 | |
|---|---|---|---|---|---|---|
| * | 数据表 | ADS131A0x 2- or 4-Channel, 24-Bit, 128-kSPS, Simultaneous-Sampling, Delta-Sigma ADC 数据表 (Rev. E) | PDF | HTML | 2020-6-17 | ||
| 应用手册 | 一款基于浏览器的简单 CRC 计算器 | PDF | HTML | PDF | HTML | 2026-3-16 | ||
| 应用手册 | 电桥测量基本指南 (Rev. A) | PDF | HTML | 英语版 (Rev.A) | PDF | HTML | 2024-3-8 | |
| 应用手册 | Δ-Σ ADC 中的数字滤波器类型 (Rev. A) | PDF | HTML | 英语版 (Rev.A) | PDF | HTML | 2023-4-13 | |
| 应用手册 | 使用 Delta-Sigma 数据转换器的数据完整性通信方法 (Rev. A) | PDF | HTML | 英语版 (Rev.A) | PDF | HTML | 2021-9-13 | |
| 电子书 | Fundamentals of Precision ADC Noise Analysis (Rev. A) | 2020-6-19 |
设计与开发
如需其他信息或资源，请点击以下任一标题进入详情页面查看（如有）。
ADS131A04EVM — ADS131A04 评估模块
ADS131A04-C-EXAMPLE-CODE — ADS131A04 example C code
ANALOG-ENGINEER-CALC — PC software analog engineer's calculator
模拟工程师计算器旨在加快模拟电路设计工程师经常运用的许多重复性计算。该基于 PC 的工具提供图形界面，其中显示各种常见计算列表，从使用反馈电阻器设置运算放大器增益到选择合适的电路设计元件，以稳定模数转换器 (ADC) 驱动器缓冲器电路。
除了可用作独立工具之外，该计算器还能很好地与模拟工程师口袋参考中所述的概念配合使用。
ADC-DAC-TO-VREF-SELECT-DESIGN-TOOL — The ADC-TO-VREF-SELECT tool enables the pairing of TI ADCs, DACs, and series voltage references.
TIDA-00835 — 采用 24 位 Δ-Σ ADC 的高精度 ±0.5% 电流和隔离式电压测量参考设计
TIDA-00835 参考设计通过在宽动态范围内整合四通道、24 位同步采样差分输入 Δ-Σ ADC，可使用双极输入配置实现精确的电压和电流测量。ADC 配置为测量 ±2.5V 双极输入。 使用固定增益放大器将输入调整为 ±2.5V 的 ADC 测量范围。此 AFE 使用一个公共外部时钟将两个 ADC 链在一起，以将输入通道的数量增加到八个，同时对所有输入通道进行同步采样。通过在每个模块设置更多的测量通道，可降低整体系统成本。
| 封装 | 引脚 | CAD 符号、封装和 3D 模型 |
|---|---|---|
| TQFP (PBS) | 32 | Ultra Librarian |
订购和质量
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