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Texas Instruments AMC1411DWLR
- Part No.:
- AMC1411DWLR
- Manufacturer:
- Texas Instruments
- Category:
- Special Purpose Amplifiers
- Package:
- 8-SOIC (0.551", 14.00mm Width)
- Datasheet:
-
AMC1411DWLR.pdf
- Description:
- IC ISOLATED AMPLIFIER
- Quantity:
- Payment:
- Shipping:
Inventory:2,766
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Product details
Overview
AMC1411DWLR from Texas Instruments is a reinforced isolated amplifier optimized for high-impedance, ±2-V input voltage sensing in high-common-mode-voltage systems. It delivers fixed 1.0 V/V gain, ±1.5 mV max offset error, ±30 ppm/°C gain drift, 100 kV/μs min CMTI, and operates across –40°C to +125°C with dual 3.3-V/5-V supplies. It is used for precision DC bus voltage monitoring in motor drives and solar inverters.
For engineers reviewing the AMC1411DWLR datasheet, AMC1411DWLR pinout, AMC1411DWLR application, or AMC1411DWLR equivalent, this page provides verified specifications, functional context, isolation-critical design parameters, and validated alternative options for industrial power conversion systems requiring reinforced galvanic isolation and sub-0.04% nonlinearity.
Technical Context
The AMC1411DWLR employs a second-order delta-sigma (ΔΣ) modulator on the high-side to convert analog input into a digital bitstream, transmitted across a SiO₂ capacitive isolation barrier using on-off keying (OOK) at ~480 MHz. This architecture enables high magnetic immunity and 100 kV/μs CMTI.
On the low-side, a fourth-order analog filter reconstructs the signal into a differential output (OUTP/OUTN) with 220–275 kHz bandwidth, 1.44 V common-mode voltage, and failsafe –2.5 V differential output during high-side supply loss or shutdown activation.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Input Range | –0.1 V to +2.0 V referred to GND1; supports direct connection to high-impedance resistive dividers in 1600 VRMS working voltage systems |
| Gain Accuracy | ±0.2% max gain error; ensures <±2 mV absolute output error over full temperature range for 2-V input |
| DC Offset Error | ±1.5 mV max; enables accurate zero-point calibration in isolated voltage feedback loops |
| CMTI | ≥100 kV/μs; prevents corruption during fast transients in IGBT/SiC gate driver environments |
| Isolation Rating | 7500 VRMS per UL1577 / 10600 VPK per VDE V 0884-11; certified reinforced insulation for safety-critical industrial equipment |
| Bandwidth | 220–275 kHz; supports real-time current/voltage loop control in 20-kHz-class inverters |
| Supply Flexibility | High-side VDD1: 3–5.5 V; low-side VDD2: 3–5.5 V; allows independent 3.3-V logic and 5-V analog domain operation |
Pinout & Package
AMC1411DWLR uses a stretched SOIC-8 (DWL) package with 6.4 mm × 14.0 mm body size and ≥15.7 mm creepage for reinforced isolation compliance.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VDD1 | High-side power supply | Provides power to input stage and ΔΣ modulator; supports undervoltage detection at 2.6 V (typ) |
| IN | Analog input | High-impedance (1 GΩ), single-ended node for direct connection to voltage divider; linear range –0.1 V to +2 V |
| SHTDN | Shutdown control | Active-high digital input with internal 100-kΩ pullup; forces failsafe –2.5 V differential output when asserted |
| GND1 | High-side analog ground | Reference for IN and VDD1; must be isolated from low-side ground plane by ≥15.7 mm creepage |
| GND2 | Low-side analog ground | Reference for OUTP/OUTN and VDD2; forms isolated return path for reconstructed analog output |
| OUTN | Inverting analog output | Differential output leg; pairs with OUTP to deliver 2.49 V clipping range and 1.44 V common-mode voltage |
| OUTP | Noninverting analog output | Differential output leg; provides rail-to-rail compatible output with <0.2 Ω source impedance |
| VDD2 | Low-side power supply | Supplies filter and output buffer; enables independent low-noise 3.3-V operation while high-side runs at 5 V |
Key Features
| Feature | Design Value |
|---|---|
| Reinforced Isolation | UL1577 7500 VRMS and VDE V 0884-11 10600 VPK ratings enable use in safety-certified motor drives and grid-tied inverters |
| High CMTI | 100 kV/μs minimum ensures robust operation during fast dV/dt events in SiC-based power stages without output corruption |
| Missing Supply Detection | Integrated VDD1 undervoltage lockout (2.6 V threshold) triggers failsafe output to prevent erroneous control signals |
| Low Drift Performance | ±10 μV/°C offset drift and ±30 ppm/°C gain drift maintain accuracy across –40°C to +125°C ambient extremes |
| Differential Output | OUTP/OUTN pair rejects common-mode noise in noisy inverter PCB layouts and improves ADC sampling SNR |
Applications
| Motor Drive DC Bus Sensing | Solar Inverter String Voltage Monitoring |
|---|---|
|
Use Scenario: Real-time measurement of 800-V DC link voltage in permanent magnet synchronous motor (PMSM) drives. IC Role / Device Role / Timing Role: High-side isolated amplifier providing galvanically separated, low-drift analog feedback to low-side controller ADC. Use Value: Enables precise field-oriented control (FOC) with <±0.04% nonlinearity and no degradation at 125°C junction temperature. |
Use Scenario: Monitoring 1000-V+ string voltage in central solar inverters under high-pollution outdoor conditions. IC Role / Device Role / Timing Role: Reinforced-isolated front-end sensor interfacing high-impedance divider to system MCU via differential output. Use Value: Maintains 79 dB SNR and 220 µVrms output noise despite 1600 VRMS working voltage and >15.7 mm creepage requirements. |
| Rail Transport Traction Inverter Feedback | Wind Turbine Converter Voltage Loop |
|
Use Scenario: Isolated voltage sensing in IGBT-based traction inverters operating in wide ambient (–40°C to +85°C) and high-vibration environments. IC Role / Device Role / Timing Role: Precision isolated amplifier delivering stable 1.0× gain signal to safety PLC for overvoltage protection logic. Use Value: Guaranteed ±1.5 mV offset error and failsafe –2.5 V output on VDD1 loss meet EN 5012x functional safety requirements. |
Use Scenario: Closed-loop DC-link voltage regulation in doubly-fed induction generator (DFIG) converters exposed to salt fog and thermal cycling. IC Role / Device Role / Timing Role: High-CMTI isolated amplifier feeding analog input to dual-core MCU for adaptive MPPT and grid synchronization. Use Value: 100 kV/μs CMTI prevents false triggering during lightning-induced transients; 125°C rating supports enclosure-less mounting near power modules. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar isolated amplifier applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| AMC1301DWVR | Single-ended output, 8-pin SOIC, 200-kHz bandwidth, ±200-µV offset (typ), no SHTDN pin | Lacks failsafe shutdown and differential output; suitable only for non-safety-critical, lower-bandwidth sensing | Select AMC1301DWVR only if differential signaling and supply-loss detection are unnecessary and cost is primary constraint |
| ISO224BDWVR | 2-V input range, 10-MHz bandwidth, ±1-mV offset (max), 3.3-V-only low-side supply, no missing-supply detection | Higher bandwidth but limited to 3.3-V VDD2; lacks UL/VDE reinforced certification and failsafe behavior | Choose ISO224BDWVR for high-speed transient capture where reinforced isolation and failsafe are not required |
Compared with AMC1301DWVR and ISO224BDWVR, the AMC1411DWLR uniquely combines reinforced isolation certification, differential failsafe output, and missing high-side supply detection-making it the only option qualified for SIL-2-capable voltage feedback in industrial inverters.
Availability
AMC1411DWLR is available at Aetrix Electronics and suitable for motor drives, solar inverters, and rail transport systems requiring stable component supply with long-term lifecycle assurance and traceable sourcing.
Supply support for AMC1411DWLR includes scheduled delivery planning, volume procurement assistance, BOM continuity management, traceable sourcing, and lifecycle availability coordination for OEM customers, industrial embedded developers, connected-device designers, and electronics production programs.
Manufacturer
Texas Instruments is a global semiconductor company focused on analog and embedded processing technologies, with leadership in precision signal chain and isolation solutions.
The AMC1411DWLR belongs to TI's reinforced isolated amplifier product line, designed specifically for high-accuracy, high-CMTI voltage sensing in industrial power conversion systems operating up to 1600 VRMS working voltage.
FAQ
What is the maximum working voltage supported by the AMC1411DWLR?
The AMC1411DWLR supports a maximum isolation working voltage of 1600 VRMS (AC) or 2260 VDC, certified per DIN VDE V 0884-11 and UL1577. Its reinforced insulation barrier is rated for 10600 VPK transient overvoltage, enabling safe operation in 1000-V-class industrial inverters and traction systems. The AMC1411DWLR maintains this rating across its full –40°C to +125°C operating range.
Does the AMC1411DWLR provide failsafe behavior during high-side supply loss?
Yes, the AMC1411DWLR includes integrated missing high-side supply detection. When VDD1 falls below 2.6 V (typical threshold), the device asserts a failsafe differential output of –2.5 V (VOUTP – VOUTN). This feature is active independently of the SHTDN pin and ensures predictable, safe behavior in fault conditions-critical for ISO 13849-compliant motor control systems. The AMC1411DWLR implements this via internal undervoltage lockout circuitry on the high-side domain.
Can the AMC1411DWLR operate with different supply voltages on high-side and low-side?
Yes, the AMC1411DWLR supports independent high-side (VDD1: 3–5.5 V) and low-side (VDD2: 3–5.5 V) supplies. Typical configurations include 5-V VDD1 for optimal input-stage performance and 3.3-V VDD2 to interface directly with low-voltage MCUs or ADCs. This flexibility allows optimization of noise, power, and compatibility without compromising isolation integrity. The AMC1411DWLR maintains full specification compliance across all valid combinations within the recommended operating conditions.
What is the significance of the 100 kV/μs CMTI rating for the AMC1411DWLR?
The 100 kV/μs minimum common-mode transient immunity (CMTI) ensures the AMC1411DWLR reliably rejects fast dV/dt noise generated by SiC or GaN power switches-common in modern high-frequency inverters. This prevents data corruption across the isolation barrier during switching events, preserving closed-loop stability. The AMC1411DWLR achieves this through OOK modulation and SiO₂ barrier design, making it suitable for 75-kHz+ switching topologies where legacy isolators fail. Measured per VDE V 0884-11 Annex D.
How does the differential output of the AMC1411DWLR improve system performance?
The AMC1411DWLR's differential OUTP/OUTN output rejects common-mode noise induced by high-power switching, improving effective resolution and SNR at the receiving ADC. With 1.44 V common-mode voltage and 2.49 V differential clipping range, it delivers rail-compatible signals to 3.3-V SAR or sigma-delta ADCs. This architecture reduces sensitivity to PCB layout asymmetry and EMI coupling-key advantages over single-ended isolators like the AMC1301DWVR. The AMC1411DWLR's differential output directly enables >16-bit effective resolution in noisy industrial environments.
AMC1411DWLR Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- -
- Package/Case:
- 8-SOIC (0.551", 14.00mm Width)
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Type:
- Isolation
- Applications:
- Driver
- Mounting Type:
- Surface Mount
- Grade:
- -
- Qualification:
- -
- Supplier Device Package:
- 8-SOIC
AMC1411DWLR FAQ
1.How can I place an order for AMC1411DWLR through Aetrix?
Please submit a Request for Quotation (RFQ) for AMC1411DWLR on Aetrix. Our sales agent will provide a competitive quotation and guide you through the order confirmation once you accept the terms.
2.Are the price and stock information for AMC1411DWLR reliable?
The price and inventory of AMC1411DWLR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for AMC1411DWLR is usually 5 days.
3.What payment methods are accepted for AMC1411DWLR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for AMC1411DWLR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for AMC1411DWLR?
AMC1411DWLR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your AMC1411DWLR order is processed, you will receive an email with the shipment details and tracking number.
Note: Tracking information may take up to 24 hours to appear. Express delivery typically takes 3–5 business days.
5.How can I obtain technical support or documentation for AMC1411DWLR?
For technical support, including AMC1411DWLR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your AMC1411DWLR requirements.
6.How does Aetrix verify that AMC1411DWLR is sourced from the original manufacturer or authorized distributors?
All AMC1411DWLR products on Aetrix are procured from qualified distributors and authorized channels. Our dedicated quality assurance team conducts strict verification, including traceability checks and, if necessary, third-party testing. This ensures that AMC1411DWLR meets industry standards.
7.What is the process for return or replacement of AMC1411DWLR?
All AMC1411DWLR units undergo pre-shipment inspection (PSI). If there is an issue with AMC1411DWLR, returns or replacements are accepted under the following conditions:
1.Quantity discrepancies, incorrect items, or visible external defects (such as breakage or corrosion), acknowledged by Aetrix.
2.The issue is reported within 90 days of delivery.
3.The AMC1411DWLR part is unused and in its original packaging.
Return procedure for AMC1411DWLR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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