Overview
The AMC1304M05QDWRQ1 is a high-precision, reinforced isolated delta-sigma (ΔΣ) modulator produced by Texas Instruments. This device is designed to provide accurate and reliable signal conversion in high-noise environments, particularly in automotive and industrial applications. It features a capacitive double isolation barrier, ensuring up to 7000 VPEAK of reinforced isolation according to DIN V VDE V 0884-10, UL1577, and CSA standards. This isolation prevents noise currents on high common-mode voltage lines from interfering with or damaging low-voltage circuitry.
The AMC1304M05QDWRQ1 is AEC-Q100 qualified, with a temperature range of –40°C to +125°C, and is suitable for use in traction inverters, onboard chargers (OBC), DC-DC converters, and battery management systems (BMS).
Key Specifications
| Parameter | Min | Typ | Max | Unit |
|---|---|---|---|---|
| Input Voltage Range (LDOIN) | 4.0 | 15.0 | 18.0 | V |
| Controller-Side Supply Voltage (DVDD) | 3.0 | 3.3 | 5.5 | V |
| Operating Ambient Temperature Range | –40 | 125 | °C | |
| Input Clock Frequency (CLKIN) | 5 | 20.1 | MHz | |
| Differential Voltage Input Range (AINP-AINN) | –50 | 50 | mV | |
| Signal-to-Noise Ratio (SNR) | 76 | 81.5 | dB | |
| Total Harmonic Distortion (THD) | –90 | –81 | dB | |
| Spurious-Free Dynamic Range (SFDR) | 81 | 90 | dB | |
| Package Type | SOIC-16 (DW) |
Key Features
- High-Precision Delta-Sigma Modulator: Achieves 16 bits of resolution with a dynamic range of 81 dB (13.2 ENOB) at a data rate of 78 kSPS.
- Reinforced Isolation: Provides up to 7000 VPEAK of isolation, certified to DIN V VDE V 0884-10, UL1577, and CSA standards.
- Low Input Voltage Range: Optimized for direct connection to shunt resistors or other low-voltage-level signal sources with a range of ±50 mV.
- Integrated LDO Regulator: Allows an unregulated input voltage between 4 V and 18 V on the high side.
- Flexible Power Supply: Controller-side power supply operates from 3.3 V or 5 V.
- Robust ESD Protection: AEC-Q100 qualified with HBM ESD Classification Level 2 and CDM ESD Classification Level C6.
Applications
- Traction Inverters: Used in electric vehicle and hybrid electric vehicle applications to monitor high-current signals.
- Onboard Chargers (OBC): Ensures accurate current and voltage measurements in onboard charging systems.
- DC-DC Converters: Suitable for monitoring and controlling DC-DC conversion processes in various power systems.
- Battery Management Systems (BMS): Critical for precise battery monitoring and management in automotive and industrial settings.
Q & A
- What is the operating temperature range of the AMC1304M05QDWRQ1?
The operating ambient temperature range is –40°C to +125°C.
- What is the input voltage range for the LDOIN pin?
The input voltage range for the LDOIN pin is from 4 V to 18 V.
- What is the typical signal-to-noise ratio (SNR) of the AMC1304M05QDWRQ1?
The typical SNR is 81.5 dB.
- What type of isolation does the AMC1304M05QDWRQ1 provide?
The device provides reinforced isolation of up to 7000 VPEAK.
- What are the common applications of the AMC1304M05QDWRQ1?
Common applications include traction inverters, onboard chargers (OBC), DC-DC converters, and battery management systems (BMS).
- What is the package type of the AMC1304M05QDWRQ1?
The device is available in a wide-body SOIC-16 (DW) package.
- What is the input clock frequency range for the CLKIN pin?
The input clock frequency range is from 5 MHz to 20.1 MHz.
- How does the AMC1304M05QDWRQ1 protect against ESD?
The device is AEC-Q100 qualified with HBM ESD Classification Level 2 and CDM ESD Classification Level C6.
- What is the typical resolution and dynamic range of the AMC1304M05QDWRQ1?
The device achieves 16 bits of resolution with a dynamic range of 81 dB (13.2 ENOB) at a data rate of 78 kSPS.
- Can the AMC1304M05QDWRQ1 be used with shunt resistors?
Yes, the input is optimized for direct connection to shunt resistors or other low-voltage-level signal sources.
