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Texas Instruments AMC23C11DWV
- Part No.:
- AMC23C11DWV
- Manufacturer:
- Texas Instruments
- Category:
- Comparators
- Package:
- 8-SOIC (0.295", 7.50mm Width)
- Datasheet:
-
AMC23C11DWV.pdf
- Description:
- IC COMPARATOR 1 GEN PUR 8SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:640
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Product details
Overview
AMC23C11 from Texas Instruments is a reinforced isolated comparator with 240ns typical propagation delay, adjustable 20mV–2.7V trip threshold via external resistor, ±1% max trip error at 250mV, and open-drain output supporting transparent or latch mode. It operates across –40°C to +125°C and isolates high-side (3–27V) and low-side (2.7–5.5V) domains for overcurrent detection in motor drives and solar inverters.
For engineers reviewing the AMC23C11 datasheet, AMC23C11 pinout, AMC23C11 application, or AMC23C11 equivalent, key selection criteria include reinforced isolation certification (7000VPK per VDE 0884-17), CMTI ≥75V/ns, latch-mode control timing, and precise low-voltage threshold adjustment using a 100μA ±1% internal reference current.
Technical Context
The AMC23C11 implements a SiO₂-based capacitive reinforced isolation barrier enabling galvanic separation between input (high-side) and output (low-side) domains. Its comparator core uses an internally generated 100μA reference current to set trip thresholds via external resistor, with hysteresis selectable between low (4mV) and high (25mV) modes based on VREF voltage crossing 500–600mV.
Output behavior is determined by the LATCH pin: tied to GND2 for transparent mode (output follows IN state), or driven high for latch mode (output remains latched until cleared by falling edge). Propagation delay is specified at 240ns (typ) with 10mV overdrive and 15pF load, and deglitch times of 1.8–3.2µs (LATCH) and 10–100µs (mode selection) ensure noise immunity.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Propagation delay | 240ns typical - enables fast fault response in high-speed power systems like IGBT gate drivers. |
| Adjustable threshold range | 20mV to 2.7V - supports direct shunt-based current sensing down to millivolt-level signals without amplification. |
| Reference current accuracy | 100μA ±1% - ensures predictable, stable threshold setting independent of supply voltage variation. |
| Reinforced isolation rating | 7000VPK per DIN EN IEC 60747-17 (VDE 0884-17) - meets safety requirements for industrial motor drives and grid-tied inverters. |
| CMTI | ≥75V/ns minimum - maintains reliable operation in high-dV/dt environments such as SiC/GaN switching nodes. |
| Operating temperature | –40°C to +125°C - supports deployment in under-hood automotive, industrial, and outdoor renewable energy applications. |
| Supply voltage ranges | High-side: 3–27V; low-side: 2.7–5.5V - allows flexible integration with diverse power rails including 12V/24V bus and 3.3V MCU interfaces. |
Pinout & Package
The AMC23C11 is housed in an 8-pin wide-body SOIC (DWV) package measuring 5.85mm × 11.5mm, optimized for reinforced creepage and clearance (≥8.5mm) and certified for 5000VRMS isolation per UL1577.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VDD1 | High-side power supply | Provides 3–27V bias for input stage and isolation barrier transmitter; includes undervoltage lockout at 2.9V (falling). |
| IN | Analog input | Differential input referenced to GND1; accepts –400mV to 4V with 1GΩ input resistance and ≤25nA bias current. |
| REF | Threshold reference input | Internally sourced with 100μA ±1% current; sets trip point via external resistor; also selects hysteresis mode (low/high) based on voltage level. |
| GND1 | High-side ground | Return path for input circuitry and isolation barrier primary side; must be separated from low-side ground plane. |
| VDD2 | Low-side power supply | Supplies 2.7–5.5V to output logic and receiver; includes POR at 2.3V and UVLO at 2.1V (falling). |
| LATCH | Digital mode select | Active-high control: low = transparent mode (output mirrors IN), high = latch mode (output holds until reset). |
| GND2 | Low-side ground | Return path for output stage and MCU interface; galvanically isolated from GND1 by reinforced barrier. |
| OUT | Open-drain digital output | Sinks up to 4mA; requires external pull-up; low-level voltage ≤250mV at 4mA ensures clean logic-low to 3.3V/5V receivers. |
Key Features
| Feature | Design Value |
|---|---|
| Reinforced isolation barrier | SiO₂-based capacitive isolation rated 7000VPK (VDE 0884-17) and 5000VRMS (UL1577), enabling single-component safety compliance in IEC 62368-1 systems. |
| Adjustable trip threshold | 20mV–2.7V range set by one external resistor, eliminating need for precision op-amps or DACs in current-sense feedback paths. |
| Latch mode with deglitching | 1.8–3.2µs LATCH pin deglitch time prevents false triggering from noise; latch output remains asserted until cleared by falling edge. |
| High CMTI performance | ≥75V/ns minimum common-mode transient immunity ensures robust operation near fast-switching power devices (e.g., SiC MOSFETs). |
| Wide dual-supply operation | Independent high-side (3–27V) and low-side (2.7–5.5V) supplies allow direct connection to shunt resistors and 3.3V microcontrollers without level-shifting. |
Applications
| Motor Drive Overcurrent Protection | Solar Inverter DC Link Monitoring |
|---|---|
|
Use Scenario: Real-time detection of phase current faults during IGBT switching in 3-phase AC drives. IC Role / Device Role / Timing Role: Isolated comparator monitors shunt voltage across high-side leg; triggers fault signal within 240ns to disable PWM before destructive current peaks. Use Value: Enables <1µs total fault loop latency when paired with fast gate drivers, meeting SIL-2 functional safety timing constraints. |
Use Scenario: Monitoring DC-link voltage surges caused by grid transients or MPPT algorithm overshoot in string inverters. IC Role / Device Role / Timing Role: High-side comparator senses overvoltage condition across DC-link capacitor; latched output holds fault flag until system reset. Use Value: Eliminates need for optocoupler + comparator discrete solution, reducing BOM count and improving long-term reliability under thermal cycling. |
| Frequency Inverter Short-Circuit Detection | DC/DC Converter Output OVP |
|
Use Scenario: Detecting shoot-through or short-circuit events in half-bridge topologies operating at >20kHz switching frequencies. IC Role / Device Role / Timing Role: Fast-response comparator compares sensed current against 50mV threshold; latch mode prevents intermittent clearing during fault persistence. Use Value: Trip threshold error ≤±1% at 250mV ensures consistent trip points across temperature, critical for repeatable protection margins. |
Use Scenario: Secondary-side overvoltage protection in isolated flyback or forward converters powering sensitive loads. IC Role / Device Role / Timing Role: Low-side powered AMC23C11 monitors regulated output via resistive divider; open-drain output pulls down enable line of primary controller. Use Value: Dual supply independence allows direct 3.3V MCU interfacing while sensing up to 27V high-side rail, simplifying auxiliary supply design. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar isolated comparator applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| AMC1301QDWV | Delta-sigma modulator output (digital bitstream), no adjustable threshold, fixed 100mV reference, higher latency (~1µs). | Requires external digital filter/MCU processing; suited for precision current measurement, not fast fault detection. | Select AMC1301QDWV only when high-resolution analog-to-digital conversion is required instead of immediate digital fault assertion. |
| SI8920BD-IS | Isolated amplifier (not comparator); provides analog output; no latch function; 200kV/µs CMTI; 100ns propagation delay. | Needs external comparator for thresholding; better for closed-loop control than protection; lacks integrated hysteresis selection. | Choose SI8920BD-IS when analog feedback (e.g., current loop) is needed alongside isolation, not binary fault signaling. |
Compared with AMC23C11, AMC1301QDWV trades fast deterministic response for resolution and SI8920BD-IS sacrifices integrated decision logic for analog fidelity-making AMC23C11 uniquely suited for sub-microsecond, self-contained overcurrent/overvoltage protection in high-reliability power systems.
Availability
AMC23C11 is available at Aetrix Electronics and suitable for motor drives, solar inverters, and frequency inverters requiring stable component supply, reinforced isolation certification, and sub-500ns fault response.
Supply support for AMC23C11 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 AMC23C11 belongs to TI's reinforced isolated comparator product line, designed specifically for high-speed, safety-critical fault detection in industrial power electronics where galvanic separation and nanosecond-level timing are mandatory.
FAQ
What is the maximum adjustable trip threshold voltage for the AMC23C11?
The AMC23C11 supports an adjustable trip threshold from 20mV to 2.7V. This range is achieved using the internal 100μA ±1% reference current and a single external resistor connected between REF and GND1. Thresholds above 1.6V require VDD1 ≥ VREF + 1.4V to maintain proper headroom, as specified in the Recommended Operating Conditions table of the AMC23C11 datasheet.
Does the AMC23C11 require external components to operate in latch mode?
Yes - the AMC23C11 enters latch mode when the LATCH pin is driven high (≥0.7×VDD2). To ensure reliable operation, the LATCH pin must never be left floating; it should be actively pulled to GND2 (for transparent mode) or driven by a clean digital signal (e.g., from an MCU GPIO). No additional passive components are required beyond the external resistor on REF for threshold setting.
How does the AMC23C11 achieve its 75V/ns CMTI rating?
The AMC23C11 achieves ≥75V/ns common-mode transient immunity through its SiO₂-based capacitive reinforced isolation barrier and proprietary digital modulation scheme. The barrier's material properties, layout symmetry, and differential receiver architecture reject fast dV/dt transients across the isolation boundary - validated per test conditions in Section 5.9 of the AMC23C11 datasheet with |VIN – VREF| ≥ 4mV and RPULLUP = 10kΩ.
Can the AMC23C11 be used with a 24V high-side supply and 3.3V low-side MCU?
Yes - the AMC23C11 is explicitly rated for high-side supply (VDD1) from 3V to 27V and low-side supply (VDD2) from 2.7V to 5.5V. A 24V VDD1 and 3.3V VDD2 configuration is fully supported, enabling direct connection to industrial bus voltages while interfacing cleanly with modern 3.3V microcontrollers via the open-drain OUT and LATCH pins.
What safety certifications apply to the AMC23C11 and how do they impact system design?
The AMC23C11 carries VDE-reinforced isolation certification per DIN EN IEC 60747-17 (VDE 0884-17) at 7000VPK and UL1577 recognition at 5000VRMS for 1 minute. These certifications allow it to serve as a single-point reinforced insulation barrier in end equipment complying with IEC 62368-1, eliminating the need for system-level redundancy and simplifying PCB creepage/clearance layout around the DWV package.
AMC23C11DWV Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Package/Case:
- 8-SOIC (0.295", 7.50mm Width)
- Series:
- -
- Packaging:
- Box
- Product Status:
- Active
- Type:
- General Purpose
- Number of Elements:
- 1
- Output Type:
- Open-Drain
- Voltage - Supply, Single/Dual (±):
- 2.7V ~ 5.5V, 3V ~ 27V
- :
- -
- Voltage - Input Offset (Max):
- 0.025µA @ 4V
- Current - Input Bias (Max):
- 4mA
- Current - Output (Typ):
- 2.2mA, 3.7mA
- Current - Quiescent (Max):
- -
- CMRR, PSRR (Typ):
- 380ns
- Propagation Delay (Max):
- 50mV
- Hysteresis:
- -40°C ~ 125°C (TA)
- Operating Temperature:
- -
- Grade:
- -
- Qualification:
- Surface Mount
- :
- 8-SOIC
AMC23C11DWV FAQ
1.How can I place an order for AMC23C11DWV through Aetrix?
Please submit a Request for Quotation (RFQ) for AMC23C11DWV 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 AMC23C11DWV reliable?
The price and inventory of AMC23C11DWV are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for AMC23C11DWV is usually 5 days.
3.What payment methods are accepted for AMC23C11DWV?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for AMC23C11DWV transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for AMC23C11DWV?
AMC23C11DWV orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your AMC23C11DWV 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 AMC23C11DWV?
For technical support, including AMC23C11DWV datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your AMC23C11DWV requirements.
6.How does Aetrix verify that AMC23C11DWV is sourced from the original manufacturer or authorized distributors?
All AMC23C11DWV 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 AMC23C11DWV meets industry standards.
7.What is the process for return or replacement of AMC23C11DWV?
All AMC23C11DWV units undergo pre-shipment inspection (PSI). If there is an issue with AMC23C11DWV, 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 AMC23C11DWV part is unused and in its original packaging.
Return procedure for AMC23C11DWV:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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