AMC1304x 具有 LDO 的高精度、增强隔离式 Δ-Σ 调制器

1 特性

• 针对基于分流电阻的电流测量进行优化的引脚兼容系列：
  • 输入电压范围为 ±50mV 或 ±250mV
  • CMOS 或 LVDS 数字接口选项
• 出色的直流性能，支持系统级高精度感测：
  • 偏移误差：±50µV 或 ±100µV（最大值）
  • 偏移漂移：1.3µV/°C（最大值）
  • 增益误差：±0.2% 或 ±0.3%（最大值）
  • 增益漂移：±40ppm/°C（最大值）
• 安全相关认证：
  • 7000 V_PK 增强型隔离，符合 DIN V VDE V 0884-10 (VDE V 0884-10): 2006-12 标准
  • 符合 UL 1577 标准且长达 1 分钟的 5000 V_RMS 隔离
  • CAN/CSA No. 5A 组件接受服务通知、IEC 60950-1 和 IEC 60065 终端设备标准
• 瞬态抗扰度：15kV/µs（最小值）
• 高电磁场抗扰度
  （请参见应用手册 SLLA181A）
• 外部 5MHz 至 20MHz 时钟输入
  可更加轻松地实现系统级同步
• 18V 片载低压降 (LDO) 稳压器
• 可在扩展工业温度范围内运行

2 应用

• 基于分流电阻的电流感测用于下列应用：
  • 工业电机驱动
  • 光电逆变器
  • 不间断电源
• 隔离电压测量

3 说明

AMC1304 是一款高精度 Δ-Σ (ΔΣ) 调制器，通过磁场抗扰度较高的电容式双隔离栅隔离输出与输入电路。根据 DIN V VDE V 0884-10、UL1577 和 CSA 标准，该隔离栅经认证可提供高达 7000 V_PEAK 的增强型隔离。当与隔离电源配合使用时，该器件可防止共模高电压线路上的噪声电流进入本地系统接地，从而干扰或损害低电压电路。

AMC1304 的输入针对直接连接分流电阻或其他低电压等级信号源进行了优化。凭借独特的 ±50mV 低输入电压范围，器件可通过分流显著降低功耗，同时具有出色的交流和直流性能。通过使用适当的数字滤波器（即集成于 TMS320F2807x 或 TMS320F2837x 系列）来抽取位流，该器件可在 78kSPS 数据速率下实现 81dB (13.2 ENOB) 动态范围的 16 位分辨率。

在高侧，调制器由集成的低压降 (LDO) 稳压器供电，该稳压器支持介于 4V 和 18V 之间的未经稳压的输入电压 (LDOIN)。隔离数字接口由 3.3V 或 5V 电源 (DVDD) 供电。

AMC1304 采用宽体小外形尺寸集成电路 (SOIC)-16 (DW) 封装，工作温度范围为 –40°C 至 +125°C。

1. 如需了解所有可用封装，请见数据表末尾的可订购米6体育平台手机版_好二三四附录。

简化电路原理图

4 修订历史记录

Changes from D Revision (August 2016) to E Revision

• Changed V_(ESD) for Human-body model (HBM) from ±2000 V to ±2500 VGo
• Changed 1G and 10G to 1M and 10M, respectively, in Quantization Noise Shaping figureGo

Changes from C Revision (September 2015) to D Revision

• 已更改“特性”部分：删除了经过认证的隔离隔栅分项，增加了安全相关认证和瞬态抗扰度分项Go
• 已更改简化原理图 Go
• Changed Specifications section to comply with ISO data sheet format Go
• Changed Maximum virtual junction parameter to Junction temperature in Absolute Maximum Ratings table Go
• Moved Power Rating, Insulation Specifications, Safety-Related Certifications, and Safety Limiting Values tables, changed to current standardsGo
• Changed Insulation Specifications table as per ISO standard Go
• Added Safety and Insulation Characteristics section Go
• Changed Figure 54 (The AMC1304 in a Frequency Inverter Application)Go
• Changed Figure 58 (Decoupling the AMC1304)Go

Changes from B Revision (July 2015) to C Revision

• 已将文档状态更改为完整量产数据：已将 AMC1304Mx5 发布为量产数据Go
• Changed status of AMC1304Mx5 rows to Production in Device Comparison Table Go
• Changed title of AMC1304x05 Electrical Characteristics table from AMC1304L05 to AMC1304x05 Go
• Changed typical specification in second row of DC Accuracy, PSRR parameter of AMC1304x05 Electrical Characteristics tableGo
• Added CMOS Logic Family (AMC1304M05) section to AMC1304x05 Electrical Characteristics tableGo
• Added last two rows to the Power Supply, I_DVDD and P_DVDD parameters of AMC1304x05 Electrical Characteristics tableGo
• Changed title of AMC1304x25 Electrical Characteristics table from AMC1304L25 to AMC1304x25Go
• Changed typical specification in second row of DC Accuracy, PSRR parameter of AMC1304x25 Electrical Characteristics table Go
• Added CMOS Logic Family (AMC1304M05) section to AMC1304x25 Electrical Characteristics table Go
• Added footnote 4 to AMC1304x25 Electrical Characteristics tableGo
• Added last two rows to the Power Supply, I_DVDD and P_DVDD parameters of AMC1304x25 Electrical Characteristics table Go
• Changed legends of Figure 6 and Figure 7 to include all devices, changed conditions of Figure 10 and Figure 11 Go
• Changed conditions of Figure 12, Figure 13, and Figure 14 Go
• Changed legends of Figure 19 to Figure 22, changed conditions of Figure 23 Go
• Changed conditions of Figure 24 and Figure 29 Go
• Changed conditions of Figure 30 and Figure 35 Go
• Changed conditions of Figure 36 to Figure 40 Go
• Added CMOS curve to Figure 44 to Figure 47 Go
• Changed legend of Figure 57 Go

Changes from A Revision (May 2015) to B Revision

• 已将 AMC1304L25 发布为量产数据Go
• 已更改第二个特性要点的偏移误差和增益误差 分项 ，以包括 AMC1304L25 规范Go
• Changed status of second row to Production Go
• Changed table order in Specifications section to match correct SDS flowGo
• Added AMC1304L25 Electrical Characteristics table Go
• Changed Typical Characteristics section: changed condition statement to reflect AINP difference between device, added AMC1304L25 related curvesGo
• Added AMC1304L25 plot to Figure 6 and Figure 7 Go
• Changed Figure 10 Go
• Added Figure 11 Go
• Added Figure 12 and condition to Figure 13 Go
• Changed Figure 14 Go
• Added AMC1304L25 plot to Figure 19, Figure 20, Figure 21, and Figure 22 Go
• Added Figure 23 Go
• Added Figure 29 and condition to Figure 24 Go
• Added condition to Figure 30 Go
• Added Figure 35 Go
• Added condition to Figure 36 Go
• Added device name to conditions of Figure 37 and Figure 38 Go
• Added Figure 39 and Figure 40 Go

Changes from * Revision (September 2014) to A Revision

• 已更改米6体育平台手机版_好二三四预览文档；已将 AMC1304L05 发布为量产数据Go

5 Device Comparison Table

6 Pin Configurations and Functions

DW Package: LVDS Interface Versions (AMC1304Lx)

16-Pin SOIC

Top View

DW Package: CMOS Interface Versions (AMC1304Mx)

16-Pin SOIC

Top View