AMC1311 Reinforced Isolated Amplifiers: Datasheet, Applications and Equivalents
8 Amplifier AMC1311 8 Pin 3.3V 8-SOIC (0.295, 7.50mm Width)
The AMC1311 is a precision, isolated amplifier with an isolation barrier that is highly resistant to magnetic interference between the output and the input circuitry. This article will cover pinout, datasheet, applications, features, and other details about AMC1311 amplifiers.

Current sensing with different types of amplifiers
What is AMC1311?
The AMC1311 device is a precision, isolated amplifier with an isolation barrier that is highly resistant to magnetic interference between the output and the input circuitry. According to VDE V 0884-11 and UL1577, this barrier is certified to provide reinforced galvanic isolation of up to 7 kV peak. This isolated amplifier separates portions of the system that run on different common-mode voltage levels and protects lower-voltage parts from damage when used in conjunction with an isolated power supply.
The AMC1311 device has a high-impedance input that is designed for use with high-voltage resistive dividers or other voltage signal sources with high output resistance. The high-performance of the AMC1311 Amplifiers enables accurate, low-temperature drift voltage or temperature sensing and control in closed-loop systems.
AMC1311 Pinout

AMC1311 Pinout
AMC1311 CAD Model

AMC1311 Symbol

AMC1311 Footprint

AMC1311 3D Model
Specifications
- TypeParameter
- Lifecycle Status
Lifecycle Status refers to the current stage of an electronic component in its product life cycle, indicating whether it is active, obsolete, or transitioning between these states. An active status means the component is in production and available for purchase. An obsolete status indicates that the component is no longer being manufactured or supported, and manufacturers typically provide a limited time frame for support. Understanding the lifecycle status is crucial for design engineers to ensure continuity and reliability in their projects.
ACTIVE (Last Updated: 6 days ago) - Factory Lead Time12 Weeks
- Mounting Type
The "Mounting Type" in electronic components refers to the method used to attach or connect a component to a circuit board or other substrate, such as through-hole, surface-mount, or panel mount.
Surface Mount - Package / Case
refers to the protective housing that encases an electronic component, providing mechanical support, electrical connections, and thermal management.
8-SOIC (0.295, 7.50mm Width) - Surface Mount
having leads that are designed to be soldered on the side of a circuit board that the body of the component is mounted on.
YES - Number of Pins8
- Packaging
Semiconductor package is a carrier / shell used to contain and cover one or more semiconductor components or integrated circuits. The material of the shell can be metal, plastic, glass or ceramic.
Tube - JESD-609 Code
The "JESD-609 Code" in electronic components refers to a standardized marking code that indicates the lead-free solder composition and finish of electronic components for compliance with environmental regulations.
e4 - Pbfree Code
The "Pbfree Code" parameter in electronic components refers to the code or marking used to indicate that the component is lead-free. Lead (Pb) is a toxic substance that has been widely used in electronic components for many years, but due to environmental concerns, there has been a shift towards lead-free alternatives. The Pbfree Code helps manufacturers and users easily identify components that do not contain lead, ensuring compliance with regulations and promoting environmentally friendly practices. It is important to pay attention to the Pbfree Code when selecting electronic components to ensure they meet the necessary requirements for lead-free applications.
yes - Part Status
Parts can have many statuses as they progress through the configuration, analysis, review, and approval stages.
Active - Moisture Sensitivity Level (MSL)
Moisture Sensitivity Level (MSL) is a standardized rating that indicates the susceptibility of electronic components, particularly semiconductors, to moisture-induced damage during storage and the soldering process, defining the allowable exposure time to ambient conditions before they require special handling or baking to prevent failures
3 (168 Hours) - Number of Terminations8
- TypeIsolation
- Terminal Finish
Terminal Finish refers to the surface treatment applied to the terminals or leads of electronic components to enhance their performance and longevity. It can improve solderability, corrosion resistance, and overall reliability of the connection in electronic assemblies. Common finishes include nickel, gold, and tin, each possessing distinct properties suitable for various applications. The choice of terminal finish can significantly impact the durability and effectiveness of electronic devices.
Nickel/Palladium/Gold (Ni/Pd/Au) - Max Operating Temperature
The Maximum Operating Temperature is the maximum body temperature at which the thermistor is designed to operate for extended periods of time with acceptable stability of its electrical characteristics.
125°C - Min Operating Temperature
The "Min Operating Temperature" parameter in electronic components refers to the lowest temperature at which the component is designed to operate effectively and reliably. This parameter is crucial for ensuring the proper functioning and longevity of the component, as operating below this temperature may lead to performance issues or even damage. Manufacturers specify the minimum operating temperature to provide guidance to users on the environmental conditions in which the component can safely operate. It is important to adhere to this parameter to prevent malfunctions and ensure the overall reliability of the electronic system.
-55°C - Terminal Position
In electronic components, the term "Terminal Position" refers to the physical location of the connection points on the component where external electrical connections can be made. These connection points, known as terminals, are typically used to attach wires, leads, or other components to the main body of the electronic component. The terminal position is important for ensuring proper connectivity and functionality of the component within a circuit. It is often specified in technical datasheets or component specifications to help designers and engineers understand how to properly integrate the component into their circuit designs.
DUAL - Terminal Form
Occurring at or forming the end of a series, succession, or the like; closing; concluding.
GULL WING - Peak Reflow Temperature (Cel)
Peak Reflow Temperature (Cel) is a parameter that specifies the maximum temperature at which an electronic component can be exposed during the reflow soldering process. Reflow soldering is a common method used to attach electronic components to a circuit board. The Peak Reflow Temperature is crucial because it ensures that the component is not damaged or degraded during the soldering process. Exceeding the specified Peak Reflow Temperature can lead to issues such as component failure, reduced performance, or even permanent damage to the component. It is important for manufacturers and assemblers to adhere to the recommended Peak Reflow Temperature to ensure the reliability and functionality of the electronic components.
NOT SPECIFIED - Number of Functions1
- Supply Voltage
Supply voltage refers to the electrical potential difference provided to an electronic component or circuit. It is crucial for the proper operation of devices, as it powers their functions and determines performance characteristics. The supply voltage must be within specified limits to ensure reliability and prevent damage to components. Different electronic devices have specific supply voltage requirements, which can vary widely depending on their design and intended application.
3.3V - Time@Peak Reflow Temperature-Max (s)
Time@Peak Reflow Temperature-Max (s) refers to the maximum duration that an electronic component can be exposed to the peak reflow temperature during the soldering process, which is crucial for ensuring reliable solder joint formation without damaging the component.
NOT SPECIFIED - Base Part Number
The "Base Part Number" (BPN) in electronic components serves a similar purpose to the "Base Product Number." It refers to the primary identifier for a component that captures the essential characteristics shared by a group of similar components. The BPN provides a fundamental way to reference a family or series of components without specifying all the variations and specific details.
AMC1311 - Temperature Grade
Temperature grades represent a tire's resistance to heat and its ability to dissipate heat when tested under controlled laboratory test conditions.
MILITARY - Number of Channels1
- Max Supply Voltage
In general, the absolute maximum common-mode voltage is VEE-0.3V and VCC+0.3V, but for products without a protection element at the VCC side, voltages up to the absolute maximum rated supply voltage (i.e. VEE+36V) can be supplied, regardless of supply voltage.
5.5V - Min Supply Voltage
The minimum supply voltage (V min ) is explored for sequential logic circuits by statistically simulating the impact of within-die process variations and gate-dielectric soft breakdown on data retention and hold time.
3V - Input Offset Voltage (Vos)
Input Offset Voltage (Vos) is a key parameter in electronic components, particularly in operational amplifiers. It refers to the voltage difference that must be applied between the two input terminals of the amplifier to nullify the output voltage when the input terminals are shorted together. In simpler terms, it represents the voltage required to bring the output of the amplifier to zero when there is no input signal present. Vos is an important parameter as it can introduce errors in the output signal of the amplifier, especially in precision applications where accuracy is crucial. Minimizing Vos is essential to ensure the amplifier operates with high precision and accuracy.
-1.1mV - Bandwidth
In electronic components, "Bandwidth" refers to the range of frequencies over which the component can effectively operate or pass signals without significant loss or distortion. It is a crucial parameter for devices like amplifiers, filters, and communication systems. The bandwidth is typically defined as the difference between the upper and lower frequencies at which the component's performance meets specified criteria, such as a certain level of signal attenuation or distortion. A wider bandwidth indicates that the component can handle a broader range of frequencies, making it more versatile for various applications. Understanding the bandwidth of electronic components is essential for designing and optimizing circuits to ensure proper signal transmission and reception within the desired frequency range.
275 kHz - -3db Bandwidth
The "-3dB bandwidth" of an electronic component refers to the frequency range over which the component's output signal power is reduced by 3 decibels (dB) compared to its maximum output power. This parameter is commonly used to describe the frequency response of components such as amplifiers, filters, and other signal processing devices. The -3dB point is significant because it represents the half-power point, where the output signal power is reduced to half of its maximum value. Understanding the -3dB bandwidth is important for designing and analyzing electronic circuits to ensure that signals are accurately processed within the desired frequency range.
275MHz - Input Bias Current
Input Bias Current refers to the small amount of current that flows into the input terminals of an electronic component, such as an operational amplifier. It is primarily caused by the input impedance of the device and the characteristics of the transistors within it. This current is crucial in determining the accuracy of the analog signal processing, as it can affect the level of voltage offset and signal integrity in the application. In many precise applications, minimizing input bias current is essential to achieve optimal performance.
3.5nA - Isolation Voltage
Isolation voltage refers to a test of the ability of an insulator to minimize the flow of electric current with a high applied voltage.
1.5kV - Max Junction Temperature (Tj)
Max Junction Temperature (Tj) refers to the maximum allowable temperature at the junction of a semiconductor device, such as a transistor or integrated circuit. It is a critical parameter that influences the performance, reliability, and lifespan of the component. Exceeding this temperature can lead to thermal runaway, breakdown, or permanent damage to the device. Proper thermal management is essential to ensure the junction temperature remains within safe operating limits during device operation.
150°C - Ambient Temperature Range High
This varies from person to person, but it is somewhere between 68 and 77 degrees F on average. The temperature setting that is comfortable for an individual may fluctuate with humidity and outside temperature as well. The temperature of an air conditioned room can also be considered ambient temperature.
125°C - Non-linearity-Max
Non-linearity-Max is a parameter used to describe the maximum level of non-linearity exhibited by an electronic component or system. Non-linearity refers to the deviation of the component's output from a straight line when compared to its input signal. In the context of electronic components, such as amplifiers or sensors, non-linearity can introduce distortion or inaccuracies in the output signal. The "Non-linearity-Max" parameter specifies the maximum amount of deviation allowed before the component is considered to be operating outside of its specified linear range. It is an important characteristic to consider when designing or selecting components for applications where precise and accurate signal processing is required.
0.04% - Height2.8mm
- Length5.85mm
- Width7.5mm
- Thickness
Thickness in electronic components refers to the measurement of how thick a particular material or layer is within the component structure. It can pertain to various aspects, such as the thickness of a substrate, a dielectric layer, or conductive traces. This parameter is crucial as it impacts the electrical, mechanical, and thermal properties of the component, influencing its performance and reliability in electronic circuits.
2.65mm - RoHS Status
RoHS means “Restriction of Certain Hazardous Substances” in the “Hazardous Substances Directive” in electrical and electronic equipment.
ROHS3 Compliant
AMC1311 Features
2-V, high-impedance input voltage range optimized for isolated voltage measurement
Low offset error and drift:
AMC1311B: ±1.5 mV (max), ±10 µV/°C (max)
AMC1311: ±9.9 mV (max), ±20 µV/°C (typ)
Fixed gain: 1
Very low gain error and drift:
AMC1311B: ±0.2% (max), ±40 ppm/°C (max)
AMC1311: ±1% (max), ±30 ppm/°C (typ)
Low nonlinearity and drift: 0.01%, 1 ppm/°C (typ)
3.3-V operation on high-side (AMC1311B)
Missing high-side supply indication
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
AMC1311 Internal Schematics

AMC1311 Internal Schematics
AMC1311 Applications
Isolated voltage sensing in:
motor drives
frequency inverters
uninterruptible power supplies
Where to use isolated amplifier?
The primary purpose of an isolation amplifier is to lower the common voltage between the source and the power load. They operate as electrical safety barriers and provide electrical isolation. They're also utilized to keep the operators safe from current leakage. These are a few of the most commonly utilized gadgets.
How to use isolated amplifier?
Isolation amplifiers provide galvanic separation between their inputs and outputs, ensuring that only the appropriate signals are transmitted and that large common-mode voltages are avoided. The ground separation between sensors is maintained in sensor-based monitoring systems to avoid ground loops.
AMC1311 Dimensions


AMC1311 Dimensions
AMC1311 Manufacturer
Texas Instruments Incorporated (TI) is an American technology company headquartered in Dallas, Texas, that designs and manufactures semiconductors and various integrated circuits, which it sells to electronics designers and manufacturers globally. It is one of the top 10 semiconductor companies worldwide based on sales volume.
What is AMC1311 used for?
The AMC1311 is an isolated amplifier that is used in conjunction with the isolated power supply to separate portions of the system that run on different common-mode voltage levels and safeguard lower-voltage parts from harm.
What is the voltage of AMC1311?
3.3V
What is the operating temperatures of AMC1311?
-55°C-125°C
How does isolation amplifier work?
Isolation amplifiers provide galvanic separation between their inputs and outputs, ensuring that only the appropriate signals are transmitted and that large common-mode voltages are avoided. The ground separation between sensors is maintained in sensor-based monitoring systems to avoid ground loops.
What is the gain of an isolation amplifier?
An isolation amplifier or a unity gain amplifier provides isolation from one fraction of the circuit to another fraction.
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