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隔離式 ADC

AMC1204

現行

±250mV 輸入、精密電流感測基本型隔離調變器

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產品規格表

AMC1204

現行
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產品詳細資料

Device type Current sensing Peak-to-peak input voltage range (V) 250mV Interface type Serial Sample rate (max) (Msps) 0.078 Rating Catalog CMTI (min) (kV/µs) 15 Number of input channels 1 Architecture Delta-Sigma SNR (dB) -80 Operating temperature range (°C) -40 to 125 Power consumption (typ) (mW) 88 SFDR (dB) 78 Isolation rating Basic Withstand isolation voltage (VISO) (Vrms) 3000 Working isolation voltage (VIOWM) (Vrms) 849 Transient isolation voltage (VIOTM) (VPK) 4.25 Creepage (min) (mm) 8.5 Clearance (min) (mm) 8.5
Device type Current sensing Peak-to-peak input voltage range (V) 250mV Interface type Serial Sample rate (max) (Msps) 0.078 Rating Catalog CMTI (min) (kV/µs) 15 Number of input channels 1 Architecture Delta-Sigma SNR (dB) -80 Operating temperature range (°C) -40 to 125 Power consumption (typ) (mW) 88 SFDR (dB) 78 Isolation rating Basic Withstand isolation voltage (VISO) (Vrms) 3000 Working isolation voltage (VIOWM) (Vrms) 849 Transient isolation voltage (VIOTM) (VPK) 4.25 Creepage (min) (mm) 8.5 Clearance (min) (mm) 8.5
SOIC (DW) 16 106.09 mm² (10.3 mm × 10.3 mm) SOIC (DWV) 8 67.275 mm² (5.85 mm × 11.5 mm)
  • ±250-mV input voltage range optimized for shunt resistors
  • Safety-related certifications:
    • 4250-VPK (AMC1204B) basic isolation per DIN VDE V 0884-11: 2017-01
    • 3005-VRMS (AMC1204B) isolation for 1 minute per UL1577
    • CAN/CSA no. 5A-component acceptance service notice and DIN EN 61010-1
    • Working voltage: 1200 VPEAK
    • Transient immunity: 15 kV/µs
  • High electromagnetic field immunity
    (see SLLA181A application report)
  • Outstanding AC performance:
    • SNR: 84 dB (minimum)
    • THD: –80 dB (maximum)
  • Excellent DC precision:
    • INL: ±8 LSB (maximum)
    • Gain Error: ±2% (maximum)
  • External clock input for easier synchronization
  • Fully specified over the extended industrial temperature range
  • ±250-mV input voltage range optimized for shunt resistors
  • Safety-related certifications:
    • 4250-VPK (AMC1204B) basic isolation per DIN VDE V 0884-11: 2017-01
    • 3005-VRMS (AMC1204B) isolation for 1 minute per UL1577
    • CAN/CSA no. 5A-component acceptance service notice and DIN EN 61010-1
    • Working voltage: 1200 VPEAK
    • Transient immunity: 15 kV/µs
  • High electromagnetic field immunity
    (see SLLA181A application report)
  • Outstanding AC performance:
    • SNR: 84 dB (minimum)
    • THD: –80 dB (maximum)
  • Excellent DC precision:
    • INL: ±8 LSB (maximum)
    • Gain Error: ±2% (maximum)
  • External clock input for easier synchronization
  • Fully specified over the extended industrial temperature range

The AMC1204 and AMC1204B are 1-bit digital output, isolated delta-sigma (ΔΣ) modulators that can be clocked at up to 20 MHz. The digital isolation of the modulator output is provided by a silicon dioxide (SiO2) barrier that is highly resistant to magnetic interference. This barrier has been certified to provide basic galvanic isolation of up to 4000 VPEAK (AMC1204) and 4250 VPEAK (AMC1204B) according to UL1577, VDE V 0884-11, and CSA standards or specifications.

The AMC1204 and AMC1204B provide a single-chip solution for measuring the small signal of a shunt resistor across an isolated barrier. These types of resistors are typically used to sense currents in motor control inverters, green energy generation systems, and other industrial applications. The AMC1204 and AMC1204B differential inputs easily connect to the shunt resistor or other low-level signal sources. An internal reference eliminates the need for external components. When used with an appropriate external digital filter, an effective number of bits (ENOB) of 14 is achieved at a data rate of 78 kSPS.

A 5-V analog supply (AVDD) is used by the modulator while the isolated digital interface operates from a 3-V, 3.3-V, or 5-V supply (DVDD). The AMC1204 and AMC1204B are available in SOIC-16 (DW) and SOIC-8 (DWV) packages and are specified from –40°C to 105°C.

The AMC1204 and AMC1204B are 1-bit digital output, isolated delta-sigma (ΔΣ) modulators that can be clocked at up to 20 MHz. The digital isolation of the modulator output is provided by a silicon dioxide (SiO2) barrier that is highly resistant to magnetic interference. This barrier has been certified to provide basic galvanic isolation of up to 4000 VPEAK (AMC1204) and 4250 VPEAK (AMC1204B) according to UL1577, VDE V 0884-11, and CSA standards or specifications.

The AMC1204 and AMC1204B provide a single-chip solution for measuring the small signal of a shunt resistor across an isolated barrier. These types of resistors are typically used to sense currents in motor control inverters, green energy generation systems, and other industrial applications. The AMC1204 and AMC1204B differential inputs easily connect to the shunt resistor or other low-level signal sources. An internal reference eliminates the need for external components. When used with an appropriate external digital filter, an effective number of bits (ENOB) of 14 is achieved at a data rate of 78 kSPS.

A 5-V analog supply (AVDD) is used by the modulator while the isolated digital interface operates from a 3-V, 3.3-V, or 5-V supply (DVDD). The AMC1204 and AMC1204B are available in SOIC-16 (DW) and SOIC-8 (DWV) packages and are specified from –40°C to 105°C.
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重要文件 類型 標題 格式選項 下載最新的英文版本 日期
* 資料表 AMC1204 20-MHz, Second-Order, Isolated Delta-Sigma Modulator for Current-Shunt Measurement datasheet (Rev. F) PDF | HTML 2020/2/11
證書 VDE Certificate for Basic Isolation for DIN EN IEC 60747-17 (Rev. AA) 2026/6/11
白皮書 Comparing Isolated Amplifiers and Isolated Modulators (Rev. B) PDF | HTML 2024/6/4
電子書 An Engineer's Guide to Isolated Signal Chain Solutions PDF | HTML 2024/5/23
應用說明 Clock Edge Delay Compensation With Isolated Modulators Digital Interface to MCUs (Rev. A) PDF | HTML 2024/1/12
Application brief Shunt Resistor Selection for Isolated Data Converters PDF | HTML 2023/5/4
證書 UL Certificate of Compliance File E181974 Vol 4 Sec 1 (Rev. A) 2022/8/5
證書 CSA Certification (Certificate: 220991) (Rev. A) 2015/10/23
應用說明 How to Optimize Performance of AMC1204 in Voltage Sensing 2015/8/31
應用說明 TIC Digital Interface (Rev. A) 2013/12/2

設計與開發

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開發板

AMC1204EVM — 適用於 1 位元、20-MHz、二階、隔離式 ΔΣ 調變器的 AMC1204 評估模組

The AMC1204 is an isolated single-channel delta-sigma (ΔΣ) modulator used in high-resolution measurement applications including current monitoring, industrial process control and motor positioning systems. The AMC1204EVM is a small form factor board containing all the necessary (...)

使用指南: PDF
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開發板

AMC1210MB-EVM — AMC1210 主機板評估模組

The AMC1210MB-EVM is a complete evaluation kit for the AMC1210 & ADS1205 in resolver applications and part of a modular evaluation system for evaluating TI delta-sigma modulators. The AMC1210MB-EVM software allows use of the AMC1210 in a variety of configurations for resolver and current shunt (...)

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開發板

PP-SALB2-EVM — PP-SALB2-EVM 智慧放大器喇叭特性化基板評估模組 (學習板 2)

此電路板支援：TAS2555YZEVM、TAS2557EVM 及 TAS2559EVM。

智慧型放大器喇叭特性化基板與支援的 TI 智慧型放大器和 PurePath Console 軟體一起使用時，可讓使用者測量喇叭偏移、溫度及其他參數，以搭配 TI 智慧型放大器產品使用。  整個解決方案提供方便使用的逐步程序，引導您完成整個喇叭特性化程序。  完成特性化後，喇叭參數會自動載入 PurePath Console 中，以便開始進行微調，並透過喇叭保護功能獲得最佳音質。

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模擬型號

AMC1204 IBIS Model

SBAM095.ZIP (41 KB) - IBIS 模型
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計算工具

SBAR010 — Delta Sigma Modulator Filter Calculator

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計算工具

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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計算工具

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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參考設計

TIDA-RESOLVER-APPLICATIONS-REFERENCE-DESIGN — 適用於 AMC1210 的主機板/控制器

This is a reference design for resolver applications and part of a modular system for evaluating our delta-sigma modulators. The software included allows use of the AMC1210 in a variety of configurations for resolver and current-shunt applications and features a data-export utility to support data (...)

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參考設計

TIDM-02006 — 透過快速序列介面 (FSI) 參考設計的分散式多軸伺服驅動

本參考設計呈現的分散式多軸伺服驅動範例，是透過使用 C2000™ 即時控制器的快速序列介面 (FSI)。多軸伺服驅動用於許多應用領域，如工廠自動化和機器人。對此類系統而言，每軸成本、性能和易用性始終是最重要的考量因素。FSI 是成本最佳化、可靠且具低抖動的高速通訊介面，可透過菊鏈鏈結多個 C2000 微控制器。在此設計中，每個 TMS320F280049 或 TMS320F280025 即時控制器可做為分散式軸的即時控制器，並運作馬達電流控制迴路。所有軸都有單一 TMS320F28388D 運作位置和速度控制迴路。相同的 F2838x 也利用多個核心執行集中式馬達控制軸與 EtherCAT (...)
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參考設計

TIDM-SERVODRIVE — 工業伺服驅動器與 AC 變頻驅動器參考設計

DesignDRIVE 開發套件是直接連接至三相 ACI 或 PMSM 馬達的完整工業驅動器參考設計。許多驅動拓撲結構可以透過此單一平台包含的組合控制、電源及通訊技術來建立。  包含多種位置感測器介面、各種電流感測技術、熱側分割選項，以及安全和工業乙太網路擴充。

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