Overview
The AMC1350DWVR, produced by Texas Instruments, is a precision, isolated amplifier designed for high-accuracy voltage sensing applications. This component features an output separated from the input circuitry by a highly resistant isolation barrier, providing reinforced galvanic isolation of up to 5 kV RMS according to VDE V 0884-11 and UL1577. The isolation barrier protects the low-voltage side from potentially harmful voltages and damage, making it ideal for systems operating on different common-mode voltage levels.
The AMC1350 is optimized for connection to high-impedance resistive dividers or other voltage signal sources with high output resistance. It operates over an extended industrial temperature range from –40°C to +125°C, ensuring accurate AC and DC voltage sensing in various industrial applications.
Key Specifications
| Specification | Value |
|---|---|
| Package | 8-SOIC (DWV) |
| Pins | 8 |
| Operating Temperature Range (°C) | –40 to +125 |
| Linear Input Voltage Range | ±5 V |
| High Input Impedance | 1.25 MΩ (typ) |
| Fixed Gain | 0.4 V/V |
| Offset Error | ±1.5 mV (max) |
| Offset Drift | ±15 µV/°C (max) |
| Gain Error | ±0.2% (max) |
| Gain Drift | ±35 ppm/°C (max) |
| Nonlinearity | ±0.02% (max) |
| Common-Mode Transient Immunity (CMTI) | 100 kV/µs (min) |
| Isolation Voltage | Up to 5 kV RMS |
| Safety Certifications | 7070-V PK reinforced isolation per DIN VDE V 0884-11: 2017-01, 5000-V RMS isolation for 1 minute per UL1577 |
Key Features
- High-impedance input optimized for connection to high-impedance resistive dividers or other voltage signal sources with high output resistance.
- Fixed gain of 0.4 V/V with low DC errors, including offset error, offset drift, gain error, and gain drift.
- High common-mode transient immunity (CMTI) of 100 kV/µs (min).
- Fail-safe output for reliable operation.
- Safety-related certifications including 7070-V PK reinforced isolation per DIN VDE V 0884-11: 2017-01 and 5000-V RMS isolation for 1 minute per UL1577.
- Operation on high-side and low-side: 3.3 V or 5 V.
- Fully specified over the extended industrial temperature range: –40°C to +125°C.
Applications
The AMC1350 is designed for accurate AC and DC voltage sensing in various industrial applications, including:
- DC/DC converters
- Frequency inverters
- AC motor drives
- Servo-drive systems
Its high accuracy, low temperature drift, and robust isolation make it suitable for environments with different common-mode voltage levels and potential electrical hazards.
Q & A
- What is the primary function of the AMC1350?
The AMC1350 is a precision, isolated amplifier designed for high-accuracy voltage sensing applications.
- What is the isolation voltage rating of the AMC1350?
The AMC1350 provides reinforced galvanic isolation of up to 5 kV RMS according to VDE V 0884-11 and UL1577.
- What is the operating temperature range of the AMC1350?
The AMC1350 operates over an extended industrial temperature range from –40°C to +125°C.
- What are the key safety certifications of the AMC1350?
The AMC1350 is certified for 7070-V PK reinforced isolation per DIN VDE V 0884-11: 2017-01 and 5000-V RMS isolation for 1 minute per UL1577.
- What is the typical input impedance of the AMC1350?
The AMC1350 has a high input impedance of 1.25 MΩ (typ).
- What are the common applications of the AMC1350?
The AMC1350 is used in DC/DC converters, frequency inverters, AC motor drives, and servo-drive systems.
- What is the fixed gain of the AMC1350?
The AMC1350 has a fixed gain of 0.4 V/V.
- Does the AMC1350 have fail-safe output?
Yes, the AMC1350 features a fail-safe output for reliable operation.
- What is the common-mode transient immunity (CMTI) of the AMC1350?
The AMC1350 has a high CMTI of 100 kV/µs (min).
- Can the AMC1350 operate on both high-side and low-side voltages?
Yes, the AMC1350 can operate on both high-side and low-side voltages of 3.3 V or 5 V.
