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The AMC1350QDWVRQ1 amplifier is an automotive ±5V input, precision voltage detection enhanced isolated amplifier launched by (TI).

Overview

The AMC1350QDWVRQ1 is an isolated precision amplifier. The output and input circuits of this amplifier are separated by isolation barriers with extremely strong anti-electromagnetic interference performance. This isolation barrier is certified to provide an enhanced electrical isolation of up to 5kVRMS, in compliance with VDE V 0884-11 and UL1577 standards, and can support an operating voltage of up to 1.5kVRMS.

This isolation barrier can separate the various devices operating at different common-mode voltage levels in the system and protect the low-voltage side from potentially harmful voltage shocks.

The high-impedance input of AMC1350QDWVRQ1 has been optimized for connection with high-impedance resistor voltage dividers or other voltage signal sources with high output resistance. The AMC1350QDWVRQ1 features outstanding accuracy and low-temperature drift, supporting precise AC and DC voltage detection. It is suitable for on-board chargers (OBC), DC/DC converters, traction inverters, or other applications that must support high common-mode voltages.

The AMC1350QDWVRQ1 adopts a wide-body 8-pin SOIC package, complies with the EC-Q100 standard for automotive applications, and supports a temperature range of -40 °C to +125°C.

The features of AMC1350QDWVRQ1 include

• Comply with the EC-Q100 standard for automotive applications:

-Temperature grade 1: -40 °C to +125°C, TA

Provide functional safety

- Documents that can assist in the design of functional safety systems

• Linear input voltage range: ±5V

• High input impedance: 1.25mΩ (typical value)

Fixed gain: 0.4V /V

• Low DC error:

- Offset voltage error ±1.5mV (maximum value)

- Temperature drift: ±15µV/°C (maximum value)

- Gain error: ±0.2% (maximum value)

-Gain drift: ±35ppm/°C (maximum value)

-Nonlinearity ±0.02% (maximum value)

• High-side and low-side operating voltages: 3.3V or 5V

High CMTI: 100kV/µs (minimum value)

Failure protection output

• Safety-related certifications:

-7070-VPK Enhanced isolation, in compliance with DIN VDE V0884-11:20117-01

-Compliant with UL1577 standard and with a 5000VRMS isolation of up to 1 minute

Target application

The AMC1350QDWVRQ1 can be used for isolated voltage sensing in the following applications:

-Traction inverter

-Car charger

-DC/DC converter

-DC charger for hybrid vehicles/electric vehicles

Performance parameters

Number of channels: 2 channels

Insulation voltage: 5000 Vrms

Package/Box: SOIC-8

Minimum operating temperature: -40 °C

Maximum operating temperature: + 125°C

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