产品详情

Device type Current sensing Peak-to-peak input voltage range (V) 50mV Interface type Serial CMOS Sample rate (max) (Msps) 20 Rating Catalog CMTI (min) (kV/µs) 15 Number of input channels 1 Architecture Delta-Sigma SNR (dB) 76 Operating temperature range (°C) -40 to 125 Power consumption (typ) (mW) 38.4 SFDR (dB) 80 Isolation rating Reinforced Withstand isolation voltage (VISO) (Vrms) 5000 Working isolation voltage (VIOWM) (Vrms) 1500 Transient isolation voltage (VIOTM) (VPK) 7 Creepage (min) (mm) 8.5 Clearance (min) (mm) 8.5
Device type Current sensing Peak-to-peak input voltage range (V) 50mV Interface type Serial CMOS Sample rate (max) (Msps) 20 Rating Catalog CMTI (min) (kV/µs) 15 Number of input channels 1 Architecture Delta-Sigma SNR (dB) 76 Operating temperature range (°C) -40 to 125 Power consumption (typ) (mW) 38.4 SFDR (dB) 80 Isolation rating Reinforced Withstand isolation voltage (VISO) (Vrms) 5000 Working isolation voltage (VIOWM) (Vrms) 1500 Transient isolation voltage (VIOTM) (VPK) 7 Creepage (min) (mm) 8.5 Clearance (min) (mm) 8.5
SOIC (DW) 16 106.09 mm² (10.3 mm × 10.3 mm)
  • Pin-compatible family optimized for shunt-resistor-based current measurements:
    • ±50-mV or ±250-mV input voltage ranges
    • CMOS or LVDS digital interface options
  • Excellent DC performance supporting high-precision sensing on system level:
    • Offset error: ±50 µV or ±150 µV (max)
    • Offset drift: 1.3 µV/°C (max)
    • Gain error: ±0.3% (max)
    • Gain drift: ±40 ppm/°C (max)
  • Safety-related certifications:
    • 7000-VPK reinforced isolation per
      DIN VDE V 0884-11: 2017-01
    • 5000-VRMS isolation for 1 minute per UL1577
    • CAN/CSA no. 5A-component acceptance service notice and IEC 62368-1 end equipment standard
  • Transient immunity: 15 kV/µs (min)
  • High electromagnetic field immunity
    (see application note SLLA181A)
  • External 5-MHz to 20-MHz clock input for
    easier system-level synchronization
  • Fully specified over the extended industrial temperature range
  • Pin-compatible family optimized for shunt-resistor-based current measurements:
    • ±50-mV or ±250-mV input voltage ranges
    • CMOS or LVDS digital interface options
  • Excellent DC performance supporting high-precision sensing on system level:
    • Offset error: ±50 µV or ±150 µV (max)
    • Offset drift: 1.3 µV/°C (max)
    • Gain error: ±0.3% (max)
    • Gain drift: ±40 ppm/°C (max)
  • Safety-related certifications:
    • 7000-VPK reinforced isolation per
      DIN VDE V 0884-11: 2017-01
    • 5000-VRMS isolation for 1 minute per UL1577
    • CAN/CSA no. 5A-component acceptance service notice and IEC 62368-1 end equipment standard
  • Transient immunity: 15 kV/µs (min)
  • High electromagnetic field immunity
    (see application note SLLA181A)
  • External 5-MHz to 20-MHz clock input for
    easier system-level synchronization
  • Fully specified over the extended industrial temperature range

The AMC1305 is a precision, delta-sigma (ΔΣ) modulator with the output separated from the input circuitry by a capacitive double isolation barrier that is highly resistant to magnetic interference. This barrier is certified to provide reinforced isolation of up to 7000 VPEAK according to the DIN VDE V 0884-11, UL1577, and CSA standards. Used in conjunction with isolated power supplies, the device prevents noise currents on a high common-mode voltage line from entering the local system ground and interfering with or damaging low voltage circuitry.

The AMC1305 is optimized for direct connection to shunt resistors or other low voltage level signal sources and supports excellent dc and ac performance. Shunt resistors are typically used to sense currents in motor drives, green energy generation systems, or other industrial applications. By using an appropriate digital filter (that is, as integrated on the TMS320F2837x) to decimate the bit stream, the device can achieve 16 bits of resolution with a dynamic range of 85 dB (13.8 ENOB) at a data rate of 78 kSPS.

On the high-side, the modulator is supplied with a nominal voltage of 5 V (AVDD), whereas the isolated digital interface operates from a 3.3-V or 5-V power supply (DVDD).

The AMC1305 is available in a wide-body SOIC-16 (DW) package and is specified from –40°C to +125°C.

The AMC1305 is a precision, delta-sigma (ΔΣ) modulator with the output separated from the input circuitry by a capacitive double isolation barrier that is highly resistant to magnetic interference. This barrier is certified to provide reinforced isolation of up to 7000 VPEAK according to the DIN VDE V 0884-11, UL1577, and CSA standards. Used in conjunction with isolated power supplies, the device prevents noise currents on a high common-mode voltage line from entering the local system ground and interfering with or damaging low voltage circuitry.

The AMC1305 is optimized for direct connection to shunt resistors or other low voltage level signal sources and supports excellent dc and ac performance. Shunt resistors are typically used to sense currents in motor drives, green energy generation systems, or other industrial applications. By using an appropriate digital filter (that is, as integrated on the TMS320F2837x) to decimate the bit stream, the device can achieve 16 bits of resolution with a dynamic range of 85 dB (13.8 ENOB) at a data rate of 78 kSPS.

On the high-side, the modulator is supplied with a nominal voltage of 5 V (AVDD), whereas the isolated digital interface operates from a 3.3-V or 5-V power supply (DVDD).

The AMC1305 is available in a wide-body SOIC-16 (DW) package and is specified from –40°C to +125°C.

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评估板

AMC1305M05EVM — 适用于 AMC1305M05 具有 ±50mV 输入的增强型隔离式调制器的评估模块

AMC1305M05 是一款隔离式单通道 Δ-Σ (ΔΣ) 调制器,适用于电流监测、工业过程控制以及电机定位系统等高分辨率测量应用。AMC1305M05 评估模块 (EVM) 是一款小型电路板,其中包含评估 AMC1305M05 所需的所有元件。

AMC1305M05EVM 用户指南中包含了完整的电路原理图,并介绍了 EVM 的特性与使用。有关 AMC1305M05 的完整详细信息,请参阅 AMC1305M05 产品页面。

用户指南: PDF
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仿真模型

AMC1305M25 IBIS Model

SLAM233.ZIP (24 KB) - IBIS 模型
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计算工具

MODULATOR-TIMING-EXCEL-CALC — Isolated Modulator Digital Communication Timing Calculation Tool

Use this excel calculator to confirm the correct clock setup and hold timing compensation method with an isolated modulator and SDFM controller.
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计算工具

SBAR010 — Delta Sigma Modulator Filter Calculator

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计算工具

SBAR013 — Isolated Amplifier Voltage Sensing Excel Calculator

This calculator provides estimates of the errors associated with using isolation amplifier devices in a voltage sensing configuration.
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计算工具

SBAR020 — Isolated Amplifier Current Sensing Excel Calculator

This calculator provides estimates of the errors associated with using isolation amplifier devices in a current sensing configuration.
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参考设计

TIDA-00080 — 基于隔离式 Δ-Σ 调制器的交流/直流电压和电流测量模块参考设计

这是一种基于并联的隔离式电流测量装置,无需使用电流互感器 (CT) 即可实现高精度电流测量。隔离是通过使用集成了高压隔离以及 Δ-Σ 调制器的 AMC1304 实现的。此解决方案消除了对客户重视的 CT 的需求,因为 CT 的电路板尺寸减小,产品重量减轻,缓解系统中的串扰和 EMI,并且可以通过用分流器替换 CT 来减少机械问题,从而延长产品寿命。

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参考设计

TIDA-00171 — 适用于电机驱动器的隔离式电流分流和电压测量参考设计

此评估套件和参考设计在 C2000™ TMS320F28377D Delfino™ 微控制器中实现了 AMC130x 增强型隔离式 Δ-Σ 调制器以及集成式 Sinc 滤波器。此设计能够评估这些测量值的性能:三个电机电流、三个逆变器电压以及直流链路电压。  套件中提供了固件来配置 Sinc 滤波器、设置 PLL 频率以及接收 Sinc 滤波器的数据。还提供多功能运行时 GUI 来帮助用户验证 AMC130x 性能,并支持对 Delfino 控制器中的 Sinc 滤波器参数进行配置更改。

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参考设计

TIDA-00209 — 采用 AM437x 的适用于电机驱动器的隔离式电流分流和电压测量参考设计

该参考设计使用 AMC130x 增强型隔离式 Δ-Σ 调制器以及 AM437x Sitara™ ARM® Cortex® -A9 处理器,可在 PRU-ICSS 上实现 Sinc 滤波器。此设计能够评估这些测量值的性能:三个电机电流、三个逆变器电压以及直流链路电压。  参考设计中提供了固件来配置 Sinc 滤波器、设置调制器频率以及接收 Sinc 滤波器的数据。还提供多功能运行时 GUI 来帮助用户验证 AMC130x 性能,并支持对 Sitara™ 处理器中的 Sinc 滤波器参数进行配置更改。

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参考设计

TIDA-01094 — 适用于隔离式分流电流测量的抗磁场干扰、无变压器电源参考设计

TIDA-01094 参考设计通过使用隔离式 Δ-Σ 调制器实现了具有隔离式分流传感器的 0.5 类三相无变压器能量测量系统。Δ-Σ 调制器使其输出电路与输入电路进行电容性隔离,从而提供无变压器的数据隔离。每个调制器的高侧由一个同样无变压器的电容压降电源供电。由于在这种设计中不使用变压器,因此这种设计与生俱来就能抗磁性干扰。此外,高侧电容压降电源降低了整体系统成本,具有固有的低传导和辐射发射,并且由于高侧单独由市电供电而非来自低侧电源,因此减少了从低侧电源消耗的电流。
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参考设计

TIPD165 — 基于分流器的隔离式电流检测参考设计

此参考设计经过验证,基于 AMC1304M25 隔离式 Δ-Σ 调制器和 TMS320F28377D 微控制器实现隔离式电流检测数据采集。此设计专用于基于分流器的电流测量应用,此类应用需要出色的电流隔离和精度,例如工业电机驱动、光电逆变器和电能计量。  该设计能够测量 -10A 到 +10A 的负载电流,未校准精度优于 0.3%,并且还能提供高分辨率通道和额外过流或短路检测通道的双功能。  通过制造三块 PCB 并测量直流和交流输入信号的结果,验证了设计的功能和性能是否符合电路设计目标。

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SOIC (DW) 16 Ultra Librarian

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