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Name: AMC1311BQDWVRQ1
Brand: Texas Instruments
SKU: AMC1311BQDWVRQ1
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Texas Instruments AMC1311BQDWVRQ1

Part No.:: AMC1311BQDWVRQ1

Manufacturer:: Texas Instruments

Package:: 8-SOIC (0.295, 7.50mm Width)

Datasheet:: AMC1311BQDWVRQ1.pdf

Description:: IC ISOLATION 8SOIC

In Stock:: 3154

Quantity:: Add To Cart

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AMC1311BQDWVRQ1 Specifications

Package/Case:
8-SOIC (0.295, 7.50mm Width)
Packaging:
Tape & Reel (TR),Cut Tape (CT),Digi-Reel®
Series:
Automotive, AEC-Q100
ProductStatus:
Active
Type:
Isolation
Applications:
-
MountingType:
Surface Mount

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AMC1311BQDWVRQ1 information

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AMC1311BQDWVRQ1 Typical application Circuitry

AMC1311BQDWVRQ1

The AMC1311BQDWVRQ1 is a high-precision, isolated amplifier designed by Texas Instruments, specifically tailored for use in applications requiring accurate voltage measurement across a galvanic isolation barrier. This device is particularly adept at enhancing system safety and signal integrity in environments where high common-mode voltages exist. It's widely utilized in electric vehicles (EVs), industrial motor drives, solar inverters, and other high-voltage systems where monitoring and control of electrical parameters are critical.

Application Scenarios and Parameter Features

The AMC1311BQDWVRQ1 features include a high isolation voltage (up to 7000V PK), low offset error, and a wide bandwidth, making it suitable for precision measurement and control in power conversion systems. Its reinforced isolation improves system safety by separating the high-voltage side from the low-voltage control side, thus protecting the control environment from high-voltage spikes and surges.

A specific application scenario is its integration into an electric vehicle's battery management system (BMS), where it's used to accurately measure battery cell voltages while maintaining isolation from the vehicle's main electrical system.

Specific Circuit Connection

Incorporating the AMC1311BQDWVRQ1 into an EV's BMS involves detailed planning for accurate voltage measurement across the isolation barrier. Below are detailed circuit connections and considerations:

1. High-Voltage Side Connection: First, connect the input pins (IN+ and IN-, pins 5 and 4 respectively) of the AMC1311BQDWVRQ1 to the battery cell or module you wish to measure. This configuration allows the AMC1311BQDWVRQ1 to sense the voltage difference across its inputs accurately.

2. Power Supply for High-Voltage Side: The AMC1311BQDWVRQ1 requires a power supply on the high-voltage side (VDD1, pin 8). Ensure this supply is isolated from the low-voltage side and within the specified range for the device. A decoupling capacitor should be placed close to the VDD1 pin to stabilize the supply voltage.

3. Low-Voltage Side Connection: The output of the AMC1311BQDWVRQ1 (OUT, pin 6) should be connected to the analog-to-digital converter (ADC) of the microcontroller or signal processor on the low-voltage side. This allows the processed signal to be digitized and analyzed for battery management purposes.

4. Power Supply for Low-Voltage Side: Provide an isolated power supply for the low-voltage side (VDD2, pin 3). Similar to the high-voltage side, a decoupling capacitor is recommended to ensure a stable power supply.

Design Considerations

When designing the circuit, several key issues must be addressed:

- Isolation Requirements: Ensure the isolation rating of the AMC1311BQDWVRQ1 meets the system's safety requirements, considering both the working voltage and transient voltage spikes that may occur.

- Signal Integrity: To maintain high accuracy and minimize noise, keep the analog signal paths short and well-separated from high-current or high-voltage traces.

- Power Supply Stability: Use stable, low-noise power supplies for both the high-voltage and low-voltage sides to minimize offset errors and drift in the AMC1311BQDWVRQ1.

- Thermal Management: Although the AMC1311BQDWVRQ1 is designed for low power consumption, consider the thermal aspect of the entire system, especially if the device is used in a high-temperature environment like an EV's battery compartment.

By carefully considering these design principles and ensuring accurate connections to the AMC1311BQDWVRQ1, developers can effectively integrate this isolated amplifier into electric vehicle BMS or similar applications, achieving precise voltage measurement across isolation barriers while maintaining high safety and reliability standards.

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(1)Such as a deficiency in quantity, delivery of wrong items, and apparent external defects (breakage and rust, etc.), and we acknowledge such problems.

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