Overview
The AMC1301-Q1 is a precision, isolated amplifier designed by Texas Instruments for high-reliability applications, particularly in the automotive sector. This device is AEC-Q100 qualified, ensuring it meets stringent automotive standards, and is functional over a temperature range of –40°C to +125°C. The AMC1301-Q1 features an isolation barrier that provides reinforced isolation up to 7070 VPEAK, adhering to DIN EN IEC 60747-17 (VDE 0884-17) and UL1577 standards. This isolation is crucial for separating parts of the system operating at different common-mode voltage levels, protecting the low-side from potentially harmful voltage levels. The device is optimized for direct connection to shunt resistors or other low-voltage signal sources, making it ideal for accurate current control in onboard chargers (OBC), DC/DC converters, and other high-voltage applications.
Key Specifications
| Parameter | Min | Typ | Max | Unit |
|---|---|---|---|---|
| Power-supply voltage (High-side VDD1 to GND1) | -0.3 | 7 | V | |
| Power-supply voltage (Low-side VDD2 to GND2) | -0.3 | 7 | V | |
| Analog input voltage (INP, INN to GND1) | -6 | VDD1 + 0.5 | V | |
| Input current (Continuous, any pin except power-supply pins) | -10 | 10 | mA | |
| Junction temperature (TJ) | 150 | °C | ||
| Storage temperature (Tstg) | -65 | 150 | °C | |
| Operating ambient temperature (TA) | -40 | 125 | °C | |
| Input offset voltage (VOS) at TA = 25°C, INP = INN = GND1 | -0.2 | ±0.05 | 0.2 | mV |
| Input offset drift (TCVOS) | -3 | ±1 | 3 | µV/°C |
| Common-mode rejection ratio (CMRR) at fIN = 0 Hz | 120 | 130 | 140 | dB |
| High-side supply current (IDD1) at 3.0 V ≤ VDD1 ≤ 3.6 V | 6.3 | 8.5 | mA | |
| High-side supply current (IDD1) at 4.5 V ≤ VDD1 ≤ 5.5 V | 7.2 | 9.8 | mA | |
| Output signal rise time (tr) | 2.0 | µs | ||
| Output signal fall time (tf) | 2.0 | µs |
Key Features
- AEC-Q100 Qualified: Meets automotive standards with a temperature grade 1: –40°C to +125°C.
- Functional Safety-Capable: Designed for use in safety-critical applications.
- Reinforced Isolation: Provides up to 7070 VPEAK isolation, certified to DIN EN IEC 60747-17 (VDE 0884-17) and UL1577 standards.
- Precision and Accuracy: Excellent DC accuracy and low temperature drift, supporting accurate current control.
- Integrated Diagnostics: Includes common-mode overvoltage and missing high-side supply voltage detection features.
- Wide-Body 8-Pin SOIC Package: Compact and suitable for various automotive applications.
Applications
- Onboard Chargers (OBC): For precise current measurement and control.
- DC/DC Converters: Ensures accurate voltage and current monitoring.
- Battery Management Systems (BMS): Critical for monitoring battery health and performance.
- Frequency Inverters: Used in high-voltage applications requiring precise signal isolation.
Q & A
- What is the operating temperature range of the AMC1301-Q1?
The AMC1301-Q1 operates over a temperature range of –40°C to +125°C.
- What is the isolation voltage rating of the AMC1301-Q1?
The AMC1301-Q1 provides reinforced isolation up to 7070 VPEAK.
- What are the typical applications of the AMC1301-Q1?
The AMC1301-Q1 is typically used in onboard chargers, DC/DC converters, battery management systems, and frequency inverters.
- Is the AMC1301-Q1 AEC-Q100 qualified?
Yes, the AMC1301-Q1 is AEC-Q100 qualified for automotive applications.
- What is the package type of the AMC1301-Q1?
The AMC1301-Q1 is offered in a wide-body 8-pin SOIC package.
- What are the power supply voltage ranges for the AMC1301-Q1?
The high-side supply voltage (VDD1) and low-side supply voltage (VDD2) both range from 3.0 V to 5.5 V.
- What is the input offset voltage of the AMC1301-Q1?
The input offset voltage (VOS) is typically ±0.05 mV at TA = 25°C, INP = INN = GND1.
- Does the AMC1301-Q1 have built-in diagnostic features?
Yes, it includes common-mode overvoltage and missing high-side supply voltage detection features.
- What is the common-mode rejection ratio (CMRR) of the AMC1301-Q1?
The CMRR is typically 130 dB at fIN = 0 Hz.
- What are the output signal rise and fall times of the AMC1301-Q1?
The output signal rise time (tr) and fall time (tf) are both typically 2.0 µs.
