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Texas Instruments AMC23C14DWVR
- Part No.:
- AMC23C14DWVR
- Manufacturer:
- Texas Instruments
- Category:
- Comparators
- Package:
- 8-SOIC (0.295", 7.50mm Width)
- Datasheet:
-
AMC23C14DWVR.pdf
- Description:
- IC COMPARATOR 2 WINDW 8SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:1,066
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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 thresholds for the second - 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), dual-mode operation (window vs. positive-only), open-drain output behavior, CMTI ≥15 V/ns, and SOIC-8 package implementation details - all validated against TI SBAS945B (Dec 2024).
Technical Context
The AMC23C14 integrates two independent isolated comparators across a reinforced galvanic barrier certified to DIN EN IEC 60747-17 (VDE 0884-17) and UL 1577, supporting up to 1000 VRMS working voltage. Its input side operates from 3 V to 27 V, while the output side runs on 2.7 V to 5.5 V - enabling direct interface with high-voltage power stages and low-voltage MCUs.
It supports two functional modes: dual-window mode (both comparators active, centered at 0 V) and positive-comparator-only mode (enabled when REF > 550 mV), where Cmp0 threshold adjusts from 600 mV to 2.7 V and Cmp2 remains fixed at 300 mV - with internal 100 µA ±1% reference current sourcing from the REF pin.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Isolation rating | 7000 VPK reinforced per VDE 0884-17; enables safe monitoring of >1 kV DC bus voltages in industrial inverters. |
| Propagation delay | 280 ns typical; supports real-time fault response in high-speed motor control loops with <1 µs total detection latency. |
| Threshold accuracy | ±1% max at 250 mV; ensures precise overcurrent trip points without calibration in shunt-based sensing. |
| CMTI | ≥15 V/ns minimum; maintains reliable operation during fast dv/dt transients in SiC/GaN-based power converters. |
| Operating temperature | –40°C to +125°C; qualified for under-hood automotive traction inverters and industrial drive cabinets. |
| Supply ranges | VDD1 = 3–27 V (high-side); VDD2 = 2.7–5.5 V (low-side); allows direct connection to LDO outputs and wide-input DC/DC rails. |
| Output type | Open-drain outputs (OUT1/OUT2); simplifies level-shifting and enables wired-OR fault signaling to MCU interrupt pins. |
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 per safety standards.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VDD1 | High-side power supply | Provides power to input-side circuitry; accepts 3–27 V; includes undervoltage lockout at 2.9 V (falling). |
| IN | Analog input | Common differential input node for both comparators; accepts ±400 mV to 4 V range referenced to GND1. |
| REF | Reference input | Sets trip threshold via external resistor; sources 100 µA ±1% current; mode-selects window vs. positive-only operation. |
| GND1 | High-side ground | Return path for input-side circuitry and shunt measurement; galvanically isolated from GND2. |
| GND2 | Low-side ground | Return path for output-side logic; connects to MCU ground; isolated from GND1 by reinforced barrier. |
| OUT1 | Digital output | Open-drain output of window comparator 1; sinks up to 4 mA; requires external pull-up to VDD2. |
| OUT2 | Digital output | Open-drain output of window comparator 2; independently controllable; shares same electrical specs as OUT1. |
| VDD2 | Low-side power supply | Supplies output-side logic; 2.7–5.5 V range; includes UVLO at 2.1 V (falling) and POR at 2.3 V. |
Key Features
| Feature | Design Value |
|---|---|
| Dual isolated window comparators | One channel with ±20 mV to ±300 mV adjustable threshold (via REF resistor); second with fixed ±300 mV - enables simultaneous high- and low-sensitivity fault detection. |
| Positive-comparator-only mode | Activated when REF > 550 mV; disables negative comparators (Cmp1/Cmp3); configures Cmp0 for 600 mV–2.7 V threshold - ideal for unidirectional supply rail monitoring. |
| Reinforced isolation certification | 7000 VPK per VDE 0884-17 and 5000 VRMS/1 min per UL 1577; meets IEC 62368-1 for end-equipment safety compliance without additional system-level barriers. |
| High CMTI immunity | ≥15 V/ns minimum; prevents false triggering during >50 V/ns common-mode transients typical in SiC inverter switching nodes. |
| Fast, deterministic timing | 280 ns typical propagation delay with <130 ns variation (280–410 ns max); enables sub-microsecond fault response critical for IGBT/SiC short-circuit protection. |
| Integrated reference current source | 100 µA ±1% internal current into REF pin; eliminates need for external precision current source or voltage divider - reduces BOM count and layout sensitivity. |
Applications
| Motor Drive Overcurrent Protection | Solar Inverter DC Link Monitoring |
|---|---|
|
Use Scenario: Real-time detection of phase-leg short circuits or excessive load current in 3-phase PMSM drives using shunt resistors. IC Role / Device Role / Timing Role: Isolated window comparator sampling shunt voltage; triggers immediate gate shutdown via MCU interrupt within <1 µs of fault onset. Use Value: Enables IGBT/SiC FET short-circuit protection with 280 ns response - meeting <2 µs total fault-clearance requirements per IEC 61800-5-1. |
Use Scenario: Monitoring DC link voltage deviation in string inverters to detect ground faults, arc faults, or capacitor degradation. IC Role / Device Role / Timing Role: Dual-channel window comparator detecting ±300 mV (fixed) and ±50 mV (adjustable) excursions on DC bus sense signal. Use Value: Simultaneous high- and low-threshold detection improves fault classification accuracy while maintaining reinforced isolation between HV DC bus and control MCU. |
| Frequency Inverter Phase Loss Detection | DC/DC Converter Output OVP |
|
Use Scenario: Identifying missing phase current in industrial VFDs by comparing current magnitudes across three legs using isolated shunt sensing. IC Role / Device Role / Timing Role: AMC23C14 configured in positive-comparator-only mode (REF > 550 mV) to monitor unidirectional phase current signals. Use Value: Eliminates need for separate op-amp conditioning stages; direct interface to shunt + MCU reduces component count and board space by >30%. |
Use Scenario: Detecting overvoltage events on isolated 48 V or 380 V DC/DC converter outputs to prevent downstream load damage. IC Role / Device Role / Timing Role: High-side comparator monitors regulated output via resistive divider; asserts open-drain fault flag to low-side controller. Use Value: Reinforced isolation ensures safe OVP signaling across 1 kV working voltage barrier - compliant with IEC 62368-1 basic insulation requirements. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar isolated comparator applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| AMC1301QDWVRQ1 | Single-channel, ±250 mV fixed threshold; no adjustable window; 1000 VRMS reinforced isolation; 210 ns propagation delay. | Lacks dual-window capability and REF-based threshold adjustment; suited only for single-threshold overcurrent detection. | Select when only one fault channel is needed and design prioritizes lowest possible propagation delay over configurability. |
| SI8920BD-IS | Dual-channel, 2.5 kVRMS reinforced isolation; 300 ns propagation delay; fixed ±150 mV thresholds; no REF pin or adjustable mode. | Lower isolation rating (2.5 kV vs. 5 kVRMS) and no positive-only mode; requires external reference for threshold scaling. | Choose for cost-sensitive industrial PLC I/O modules where 2.5 kV isolation suffices and dual fixed thresholds meet requirements. |
Compared with AMC1301QDWVRQ1 and SI8920BD-IS, the AMC23C14 uniquely combines dual-window operation, REF-adjustable thresholds, positive-only mode, and 5 kVRMS reinforced isolation - making it the only option supporting adaptive fault detection across multiple voltage domains in high-reliability inverters.
Availability
AMC23C14 is available at Aetrix Electronics and suitable for motor drives, solar inverters, and frequency inverters requiring stable component supply, long-term lifecycle support, and certified reinforced isolation performance.
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, embedded processing, and high-reliability power management solutions.
The AMC23C14 belongs to TI's reinforced isolation amplifier/comparator portfolio, designed specifically for real-time fault detection in high-voltage industrial and automotive power systems - emphasizing speed, accuracy, and safety certification compliance.
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 (VDE 0884-17). This enables safe operation in 690 VAC and 1000 VDC industrial power systems when implemented per PCB creepage/clearance guidelines.
How does the REF pin configure the AMC23C14 into positive-comparator-only mode?
The AMC23C14 enters positive-comparator-only mode when the voltage on the REF pin exceeds 550 mV (rising threshold). In this mode, Cmp1 and Cmp3 are disabled, Cmp0 operates with a 600 mV–2.7 V adjustable threshold, and Cmp2 remains fixed at 300 mV - allowing unidirectional voltage monitoring without negative excursion detection.
What is the guaranteed propagation delay specification for the AMC23C14 across temperature and voltage?
The AMC23C14 guarantees a maximum propagation delay of 410 ns over the full –40°C to +125°C temperature range and across VDD1 = 3–27 V and VDD2 = 2.7–5.5 V, measured with 10 mV overdrive and 15 pF load. Typical delay is 280 ns at 25°C, 5 V VDD1, and 3.3 V VDD2.
Can the AMC23C14 be used with a 24 V high-side supply and 3.3 V low-side MCU interface?
Yes - the AMC23C14 explicitly supports VDD1 = 24 V (within 3–27 V range) and VDD2 = 3.3 V (within 2.7–5.5 V range). Its open-drain outputs (OUT1/OUT2) are compatible with 3.3 V MCU interrupt pins when pulled up to VDD2, and its 100 µA REF current source functions correctly across this supply combination.
Does the AMC23C14 require external passive components for basic operation?
Yes - a resistor from REF to GND1 sets the adjustable threshold (e.g., 250 kΩ for 250 mV), and a capacitor (20–100 nF) from REF to GND1 is required for noise filtering. Additionally, external pull-up resistors on OUT1/OUT2 are mandatory for open-drain logic interfacing; no other passive components are needed for core functionality.
AMC23C14DWVR Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Package/Case:
- 8-SOIC (0.295", 7.50mm Width)
- Series:
- -
- Packaging:
- Tape & Reel (TR)
- 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
AMC23C14DWVR FAQ
1.How can I place an order for AMC23C14DWVR through Aetrix?
Please submit a Request for Quotation (RFQ) for AMC23C14DWVR 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 AMC23C14DWVR reliable?
The price and inventory of AMC23C14DWVR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for AMC23C14DWVR is usually 5 days.
3.What payment methods are accepted for AMC23C14DWVR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for AMC23C14DWVR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for AMC23C14DWVR?
AMC23C14DWVR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your AMC23C14DWVR 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 AMC23C14DWVR?
For technical support, including AMC23C14DWVR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your AMC23C14DWVR requirements.
6.How does Aetrix verify that AMC23C14DWVR is sourced from the original manufacturer or authorized distributors?
All AMC23C14DWVR 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 AMC23C14DWVR meets industry standards.
7.What is the process for return or replacement of AMC23C14DWVR?
All AMC23C14DWVR units undergo pre-shipment inspection (PSI). If there is an issue with AMC23C14DWVR, 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 AMC23C14DWVR part is unused and in its original packaging.
Return procedure for AMC23C14DWVR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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