Overview
The AMC3330-Q1, produced by Texas Instruments, is a precision, isolated amplifier designed for automotive applications. It features a fully integrated, isolated DC/DC converter that enables single-supply operation from the low-side of the device. This amplifier is optimized for direct connection to high-impedance, voltage-signal sources such as resistor-divider networks, making it ideal for sensing high-voltage signals in noisy and space-constrained environments. The reinforced capacitive isolation barrier is certified according to DIN EN IEC 60747-17 (VDE 0884-17) and UL1577, ensuring robust protection for low-voltage domains. The device operates over a temperature range of –40°C to +125°C, making it suitable for a wide range of automotive and industrial applications.
Key Specifications
| Parameter | Value |
|---|---|
| Package | SO-MOD (DWE), 16 pins |
| Operating Temperature Range (°C) | –40 to 125 |
| Input Voltage Range | ±1 V |
| Fixed Gain | 2.0 |
| Gain Error (max) | ±0.2% |
| Gain Drift (max) | ±45 ppm/°C |
| Offset Error (max) | ±0.3 mV |
| Offset Drift (max) | ±4 µV/°C |
| Nonlinearity (max) | ±0.02% |
| CMTI (min) | 85 kV/µs |
| Isolation Voltage | 6000 VPK (reinforced), 4250 VRMS (for 1 minute) |
| Supply Voltage | 3.3 V or 5 V |
Key Features
- AEC-Q100 qualified for automotive applications with a temperature grade of –40°C to 125°C.
- Single-supply operation from the low-side of the device with an integrated isolated DC/DC converter.
- Optimized for direct connection to high-impedance, voltage-signal sources such as resistor-divider networks.
- Fixed gain of 2.0 and low DC errors (gain error: ±0.2%, offset error: ±0.3 mV).
- High CMTI (Common Mode Transient Immunity) of 85 kV/µs.
- System-level diagnostic features including DC/DC converter fault-detection and diagnostic output pin.
- Safety-related certifications: 6000 VPK reinforced isolation per DIN EN IEC 60747-17 (VDE 0884-17) and 4250 VRMS isolation for 1 minute per UL1577.
- Meets CISPR-11 and CISPR-25 EMI standards.
Applications
The AMC3330-Q1 is designed for various applications, particularly in the automotive sector. It is suitable for:
- Voltage monitoring and control in high-voltage systems.
- Noisy and space-constrained environments where accurate signal measurement is critical.
- Industrial control systems requiring isolated signal amplification.
- Automotive systems such as battery management, motor control, and power distribution.
Q & A
- What is the operating temperature range of the AMC3330-Q1?
The operating temperature range of the AMC3330-Q1 is –40°C to +125°C.
- What is the input voltage range of the AMC3330-Q1?
The input voltage range of the AMC3330-Q1 is ±1 V.
- What type of isolation does the AMC3330-Q1 provide?
The AMC3330-Q1 provides reinforced capacitive isolation certified according to DIN EN IEC 60747-17 (VDE 0884-17) and UL1577.
- What is the fixed gain of the AMC3330-Q1?
The fixed gain of the AMC3330-Q1 is 2.0.
- Does the AMC3330-Q1 have system-level diagnostic features?
Yes, the AMC3330-Q1 includes system-level diagnostic features such as DC/DC converter fault-detection and a diagnostic output pin.
- Is the AMC3330-Q1 AEC-Q100 qualified?
Yes, the AMC3330-Q1 is AEC-Q100 qualified for automotive applications.
- What is the CMTI of the AMC3330-Q1?
The CMTI (Common Mode Transient Immunity) of the AMC3330-Q1 is 85 kV/µs.
- What are the safety certifications of the AMC3330-Q1?
The AMC3330-Q1 is certified for 6000 VPK reinforced isolation per DIN EN IEC 60747-17 (VDE 0884-17) and 4250 VRMS isolation for 1 minute per UL1577.
- Does the AMC3330-Q1 meet EMI standards?
Yes, the AMC3330-Q1 meets CISPR-11 and CISPR-25 EMI standards.
- What is the package type of the AMC3330-Q1?
The AMC3330-Q1 comes in a SO-MOD (DWE) package with 16 pins.
