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Texas Instruments AMC23C14DWV
- Part No.:
- AMC23C14DWV
- Manufacturer:
- Texas Instruments
- Category:
- Comparators
- Package:
- 8-SOIC (0.295", 7.50mm Width)
- Datasheet:
-
AMC23C14DWV.pdf
- Description:
- IC COMPARATOR 2 WINDW 8SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:485
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Product details
Overview
AMC23C14 from Texas Instruments is a dual, reinforced isolated window comparator with fast 280 ns propagation delay, ±1% trip threshold accuracy at 250 mV, and adjustable thresholds (±20 mV to ±300 mV) for one channel and fixed ±300 mV for the other - used in overcurrent detection circuits of motor drives and solar inverters.
For engineers reviewing the AMC23C14 datasheet, AMC23C14 pinout, AMC23C14 application, or AMC23C14 equivalent, this page delivers verified isolation specs (7000 VPK reinforced, 5000 VRMS), dual-mode operation (window vs. positive-only), open-drain output behavior, and thermal derating curves for industrial-grade system design.
Technical Context
The AMC23C14 implements two independent galvanically isolated comparators across a reinforced dielectric barrier certified per DIN EN IEC 60747-17 (VDE 0884-17) and UL1577. One comparator supports user-adjustable symmetric thresholds via external resistor on REF pin; the other uses fixed ±300 mV thresholds. Both operate with input referenced to GND1 and outputs referenced to GND2.
Mode selection is voltage-controlled: when REF > 550 mV, the device enters positive-comparator-only mode (Cmp0/Cmp2 active, Cmp1/Cmp3 disabled), enabling high-side supply monitoring up to 2.7 V. The 100 µA ±1% internal reference current enables precise threshold setting without external DACs or regulators.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Isolation Rating | 7000 VPK reinforced (VDE 0884-17), 5000 VRMS for 1 min (UL1577) - enables safe high-voltage system monitoring without optocoupler aging or drift. |
| Propagation Delay | 280 ns typical - supports real-time fault response in fast-switching power converters (e.g., SiC/GaN-based inverters). |
| Threshold Accuracy | ±1% max at 250 mV - ensures consistent overcurrent trip points across temperature (–40°C to +125°C) and supply variation. |
| Adjustable Threshold Range | ±20 mV to ±300 mV (via REF pin resistor) - allows fine-tuning for low-level shunt sensing (e.g., 5 mΩ, 100 A full-scale). |
| CMTI | 15 V/ns min - maintains reliable operation under high dv/dt noise in motor drive gate-drive environments. |
| Supply Ranges | High-side: 3 V–27 V; low-side: 2.7 V–5.5 V - supports direct connection to wide-input DC/DC supplies and MCU I/O domains. |
| Output Type | Open-drain (OUT1/OUT2) - enables wired-OR fault signaling and flexible pull-up voltage selection (e.g., 3.3 V or 5 V logic). |
Pinout & Package
AMC23C14 is housed in an 8-pin wide-body SOIC (DWV) package measuring 5.85 mm × 11.5 mm, optimized for creepage/clearance ≥8.5 mm and reinforced isolation integrity.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VDD1 | High-side power supply | Provides power to input side (comparators, REF current source); supports 3 V–27 V - compatible with battery, bus, or auxiliary rails. |
| IN | Analog input | Common differential input node for both comparators; accepts ±400 mV to 4 V range relative to GND1 - interfaces directly to shunt resistors or signal conditioners. |
| REF | Reference input | Sets trip threshold for comparator 1 via 100 µA ±1% internal current; also controls mode selection (window vs. positive-only) at 500–600 mV transition. |
| GND1 | High-side ground | Return path for input circuitry and shunt measurement; must be isolated from low-side ground to maintain barrier integrity. |
| GND2 | Low-side ground | Return path for output logic and MCU interface; electrically separated from GND1 by reinforced isolation barrier. |
| OUT1 | Digital output | Open-drain output of adjustable-threshold comparator; asserts low on window violation - requires external pull-up for logic-level compatibility. |
| OUT2 | Digital output | Open-drain output of fixed ±300 mV comparator; provides independent fault channel for redundancy or secondary protection. |
| VDD2 | Low-side power supply | Supplies output logic side; 2.7 V–5.5 V range matches standard MCU I/O voltages (3.3 V or 5 V). |
Key Features
| Feature | Design Value |
|---|---|
| Dual independent isolation channels | Two fully isolated comparators share one barrier - eliminates need for two discrete isolators in dual-fault-detection systems (e.g., phase + DC-link overcurrent). |
| Adjustable + fixed threshold pairing | One channel configurable for precision low-current sensing (±20 mV), second fixed at ±300 mV for coarse overvoltage - reduces BOM count and PCB area. |
| Positive-comparator-only mode | Enables high-side supply monitoring (e.g., 12 V rail) by disabling negative thresholds when REF > 550 mV - simplifies design for unidirectional voltage supervision. |
| 100 µA ±1% reference current | Allows accurate threshold setting with single external resistor - avoids calibration steps and external references, reducing system cost and complexity. |
| Industrial temperature range | Specified from –40°C to +125°C ambient - supports deployment in under-hood automotive, industrial motor control, and outdoor solar applications. |
Applications
| Motor Drive Overcurrent Protection | Solar Inverter DC-Link Monitoring |
|---|---|
|
Use Scenario: Real-time detection of phase-leg short-circuit or overload in 3-phase PMSM drives using shunt-resistor feedback. IC Role / Device Role / Timing Role: Isolated window comparator monitors bidirectional current; triggers fault signal within 280 ns to gate driver shutdown logic. Use Value: Enables <1 µs total fault loop time (including gate driver delay), meeting IEC 61800-5-1 functional safety requirements for drive systems. |
Use Scenario: Continuous monitoring of DC-link voltage in string inverters to prevent capacitor overvoltage during MPPT transients or grid faults. IC Role / Device Role / Timing Role: Fixed ±300 mV comparator detects rapid voltage excursions; adjustable comparator validates steady-state regulation margins. Use Value: Dual-threshold architecture provides both fast transient response and stable hysteresis-based hold-off, reducing false trips in noisy PV environments. |
| Frequency Inverter Phase Imbalance Detection | DC/DC Converter Input Overvoltage Protection |
|
Use Scenario: Comparing current magnitudes across U/V/W phases to detect winding imbalance or open-circuit faults in HVAC compressors. IC Role / Device Role / Timing Role: Two AMC23C14 devices monitor separate phases; OUT1/OUT2 signals feed FPGA for cross-phase correlation analysis. Use Value: Reinforced isolation prevents ground-loop interference between phases, ensuring accurate differential comparison without common-mode rejection loss. |
Use Scenario: Protecting 48 V–60 V telecom DC/DC modules from upstream supply surges (e.g., battery bank switching transients). IC Role / Device Role / Timing Role: Positive-comparator-only mode (REF > 600 mV) configures Cmp0 for 1.2 V–2.7 V trip range - scaled to sense 60 V via resistive divider. Use Value: Eliminates need for external level-shifting op-amps or voltage references, cutting solution size by >30% versus discrete comparator + isolator designs. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar isolated comparator applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| AMC1301QDWV | Single-channel, reinforced isolated amplifier (not comparator); output is analog voltage, not digital flag. | Requires external comparator and reference; adds latency and component count for overcurrent trip decisions. | Choose when analog current reconstruction is needed alongside protection - not a drop-in replacement for digital fault signaling. |
| ISO224BDWV | Reinforced isolated amplifier with ±10 V output range; no built-in comparator or threshold logic. | Must pair with external comparator IC and isolated reference; increases board space and power consumption. | Select only if system already uses precision ADCs and requires full waveform capture - unsuitable for low-latency fault response. |
Compared with AMC1301QDWV and ISO224BDWV, the AMC23C14 delivers integrated digital fault signaling with sub-microsecond latency and zero external components for threshold setting - making it uniquely suited for cost-sensitive, space-constrained overcurrent protection where deterministic timing is critical.
Availability
AMC23C14 is available at Aetrix Electronics and suitable for motor drives, solar inverters, and frequency inverters requiring stable component supply across extended temperature and high-reliability isolation requirements.
Supply support for AMC23C14 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 leader specializing in analog and embedded processing technologies, with decades of expertise in isolation, power management, and precision signal chain solutions.
The AMC23C14 belongs to TI's reinforced isolated comparator product line, designed specifically for high-speed, high-accuracy fault detection in industrial power electronics - emphasizing safety certification, thermal robustness, and minimal external component count.
FAQ
What is the maximum working voltage supported by the AMC23C14 isolation barrier?
The AMC23C14 supports a maximum rated isolation working voltage (VIOWM) of 1000 VRMS at AC sine wave and 1410 VDC, validated per DIN EN IEC 60747-17 and UL1577. This enables safe operation in 600 VAC industrial mains-connected equipment and 800 VDC EV traction inverters when applied within creepage/clearance design rules.
How does the AMC23C14 achieve adjustable thresholds without external references?
The AMC23C14 integrates a precision 100 µA ±1% current source connected to the REF pin. By connecting an external resistor from REF to GND1, the resulting voltage (VREF = IREF × REXT) sets the trip threshold for comparator 1. For example, a 25 kΩ resistor yields 250 mV - directly defining ±250 mV window bounds.
Can the AMC23C14 be used for unidirectional voltage monitoring only?
Yes - when the voltage on the REF pin exceeds 550 mV, the AMC23C14 automatically disables its negative comparators (Cmp1 and Cmp3) and operates in positive-comparator-only mode. In this mode, Cmp0 supports adjustable thresholds from 600 mV to 2.7 V, making it ideal for high-side supply monitoring applications.
What is the minimum recommended pull-up resistance for AMC23C14 open-drain outputs?
The AMC23C14 open-drain outputs (OUT1/OUT2) are specified to sink up to 4 mA while maintaining VOL ≤ 250 mV. With a 3.3 V pull-up, a 1 kΩ resistor ensures sufficient margin (3.3 mA load), while 4.7 kΩ is commonly used for lower power. Avoid values >10 kΩ to prevent excessive rise time degradation in high-speed fault paths.
Does the AMC23C14 require external decoupling capacitors?
Yes - TI recommends 100 nF ceramic capacitors placed as close as possible between VDD1–GND1 and VDD2–GND2. Additional 10 µF bulk capacitance is advised on each supply rail. These reduce high-frequency noise coupling across the isolation barrier and ensure stable operation during fast transients in motor drive or inverter applications.
AMC23C14DWV Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Package/Case:
- 8-SOIC (0.295", 7.50mm Width)
- Series:
- -
- Packaging:
- Tray
- Product Status:
- Active
- Type:
- Window
- Number of Elements:
- 2
- Output Type:
- Open-Drain
- Voltage - Supply, Single/Dual (±):
- 2.7V ~ 5.5V, 3V ~ 27V
- :
- -
- Voltage - Input Offset (Max):
- 0.025µA @ 5V
- Current - Input Bias (Max):
- -
- Current - Output (Typ):
- 4.3mA
- Current - Quiescent (Max):
- -
- CMRR, PSRR (Typ):
- 410ns
- Propagation Delay (Max):
- 50mV
- Hysteresis:
- -40°C ~ 125°C
- Operating Temperature:
- -
- Grade:
- -
- Qualification:
- Surface Mount
- :
- 8-SOIC
AMC23C14DWV FAQ
1.How can I place an order for AMC23C14DWV through Aetrix?
Please submit a Request for Quotation (RFQ) for AMC23C14DWV 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 AMC23C14DWV reliable?
The price and inventory of AMC23C14DWV are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for AMC23C14DWV is usually 5 days.
3.What payment methods are accepted for AMC23C14DWV?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for AMC23C14DWV transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for AMC23C14DWV?
AMC23C14DWV orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your AMC23C14DWV 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 AMC23C14DWV?
For technical support, including AMC23C14DWV datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your AMC23C14DWV requirements.
6.How does Aetrix verify that AMC23C14DWV is sourced from the original manufacturer or authorized distributors?
All AMC23C14DWV 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 AMC23C14DWV meets industry standards.
7.What is the process for return or replacement of AMC23C14DWV?
All AMC23C14DWV units undergo pre-shipment inspection (PSI). If there is an issue with AMC23C14DWV, 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 AMC23C14DWV part is unused and in its original packaging.
Return procedure for AMC23C14DWV:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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