計算工具
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.
AMC1305M25
- 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
- 7000-VPK reinforced isolation per
- 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.
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開發板
AMC1305M25EVM — 適用於具有 ±250-mV 輸入之強化型隔離調變器的 AMC1305M25 評估模組
The AMC1305M25 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. AMC1305M25 evaluation module (EVM) is a small-form-factor board containing (...)
使用指南: PDF
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SBAR010 — Delta Sigma Modulator Filter Calculator
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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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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-00080 — 基於隔離式 Delta-Sigma 調變器的 AC/DC 電壓和電流量測模組參考設計
這款隔離分流架構的電流量測單元無需使用電流變壓器 (CT) ，即可進行高準確度的電流量測。隔離是透過使用整合高電壓隔離與 ΔΣ 調變器的 AMC1304 來實現。此解決方案可消除客戶重視的 CT 需求，因為電路板尺寸會縮小、產品重量降低、系統串音與 EMI 減少，並以分流器取代 CT 來降低機械問題，進而延長產品使用壽命。
參考設計
TIDA-00171 — 適用於馬達驅動器的隔離電流分流及電壓測量參考設計
此評估套件與參考設計在 C2000™ TMS320F28377D Delfino™ 微控制器中實作 AMC130x 強化型隔離 ΔΣ 調變器與整合式 Sinc 濾波器。此設計可評估這些量測的性能：三個馬達電流、三個逆變器電壓和 DC 鏈路電壓。 套件中提供的韌體，可用於配置 Sinc 濾波器、設定 PLL 頻率，以及從 Sinc 濾波器接收資料。另外也提供多用途執行階段 GUI，以協助使用者驗證 AMC130x 性能，並支援對 Delfino 控制器中的 Sinc 濾波器參數進行配置變更。
參考設計
TIPD165 — 隔離、分流架構電流感測參考設計
This verified reference design implements isolated current sensing data acqusition based on AMC1304M25 isolated delta-sigma (ΔΣ) modulator and TMS320F28377D microcontroller. This design was made for shunt-based current measurement applications which require excellent galvanic (...)
參考設計
TIDA-00209 — 隔離電流分流及電壓測量參考設計，適用於搭載 AM437x 的馬達驅動器
此參考設計使用 AMC130x 強化型隔離 ΔΣ 調變器，以及 AM437x Sitara™ ARM® Cortex® -A9 處理器，在 PRU-ICSS 上實作 Sinc 濾波器。此設計可評估這些量測的性能：三個馬達電流、三個逆變器電壓和 DC 鏈路電壓。 參考設計中提供的韌體，可用於配置 Sinc 濾波器、設定調變器頻率，以及從 Sinc 濾波器接收資料。另外也提供多用途執行階段 GUI，以協助使用者驗證 AMC130x 性能，並支援對 Sitara™ 處理器中的 Sinc 濾波器參數進行配置變更。
| 封裝 | 針腳 | CAD 符號、佔位空間與 3D 模型 |
|---|---|---|
| SOIC (DW) | 16 | Ultra Librarian |
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