Texas Instruments AMC1304x 精密 Δ-Σ(ΔΣ)调制器
德州仪器 AMC1304x 精密 Δ-Σ(ΔΣ)调制器包含在输出与输入电路之间由电容式双隔离势垒进行隔离的调制器。这使得这些器件具有很强的抗磁干扰能力。该势垒经认证可提供高达 7000VPEAK 的增强隔离,符合 DIN V VDE V 0884-10、UL1577 和 CSA 标准。当与隔离型电源配合使用时,该器件可防止高共模电压线路上的噪声电流进入局部系统接地。还可防止干扰或损坏低压电路。AMC1304x 的输入经优化,可以直接连接分流电阻或其他低压电平信号源。该±50mV 器件独有的低输入电压范围允许通过分流器实现功耗的大幅降低。这有助于支持出众的交流和直流性能。特性
- Pin-Compatible Family Optimized for Shunt-Resistor-Based Current Measurements
- Input voltage ranges ±50mV or ±250mV
- CMOS or LVDS digital interface options
- Excellent DC Performance Supporting High-Precision Sensing on System Level
- Offset error ±50µV (max) or ±100µV (max)
- Offset drift 1.3µV/°C (max)
- Gain error ±0.2% (max) or ±0.3% (max)
- Gain drift ±40ppm/°C (max)
- Certified Isolation Barrier
- Reinforced isolation rating
- DIN VDE V 0884-10, UL1577, and CSA approved
- Isolation voltages 7000VPEAK, 10000VSURGE
- Working voltages 1500VDC, 1000VAC, rms
- Transient immunity 15kV/µs (min)
- High electromagnetic field immunity (see application note SLLA181A)
- External 5MHz to 20MHz clock input for easier system-level synchronization
- On-chip 18V LDO regulator
- Fully specified over the extended industrial temperature range
应用
- Shunt-Resistor-Based Current Sensing
- Industrial motor drives
- Photovoltaic inverters
- Uninterruptible power supplies
- Isolated voltage measurements
TI Reference Design Library
Block Diagram
视频
发布日期: 2015-08-10
| 更新日期: 2022-03-11
