Overview
The Texas Instruments AMC1306M25DWVR is a precision, delta-sigma (ΔΣ) modulator designed for high-performance applications requiring isolated signal conversion. This device features a capacitive double isolation barrier, which provides reinforced isolation of up to 7000 V PEAK according to DIN VDE V 0884-11 and UL1577 standards. This isolation barrier is highly resistant to magnetic interference and protects lower-voltage parts of the system from damage when used with isolated power supplies.
The AMC1306M25 is optimized for direct connection to shunt resistors or other low-voltage signal sources, making it ideal for current measurements. It offers excellent DC and AC performance, with low input voltage ranges of ±50 mV or ±250 mV, depending on the variant.
Key Specifications
| Attribute | Value |
|---|---|
| Package | SOIC (DWV), 8 pins |
| Operating Temperature Range | -40°C to 125°C |
| Input Voltage Range | ±50 mV or ±250 mV |
| Resolution | 16 bits |
| Sampling Rate | 78 kSPS |
| Digital Supply Voltage | 2.7 V to 5.5 V |
| Interface Type | CMOS, Serial |
| Isolation Voltage | 7000 V PEAK (DIN VDE V 0884-11), 5000 V RMS (UL1577) |
| Offset Error | ±50 µV or ±100 µV (max) |
| Offset Drift | 1 µV/°C (max) |
| Gain Error | ±0.2% (max) |
| Gain Drift | ±40 ppm/°C (max) |
| Transient Immunity | 100 kV/µs (typ) |
Key Features
- Pin-compatible family optimized for shunt-resistor-based current measurements.
- Manchester coded or uncoded bitstream options.
- Excellent DC performance with low offset error, offset drift, gain error, and gain drift.
- High transient immunity of 100 kV/µs (typ).
- System-level diagnostic features.
- Safety-related certifications including 7000 V PEAK reinforced isolation and compliance with DIN VDE V 0884-11, UL1577, CAN/CSA no. 5A, and IEC 62368-1 standards.
- Fully specified over the extended industrial temperature range of -40°C to 125°C.
- Support for single-wire data and clock transfer in Manchester coded versions.
Applications
The AMC1306M25DWVR is suitable for a variety of industrial and high-reliability applications, including:
- Current measurements using shunt resistors.
- Isolated data acquisition systems.
- Industrial control systems requiring high precision and isolation.
- Medical devices and equipment needing reinforced isolation for safety.
- Automotive and aerospace applications where robustness and reliability are critical.
Q & A
- What is the primary function of the AMC1306M25DWVR?
The AMC1306M25DWVR is a precision delta-sigma modulator designed for isolated signal conversion, particularly optimized for shunt-resistor-based current measurements.
- What are the input voltage ranges of the AMC1306M25DWVR?
The device offers input voltage ranges of ±50 mV or ±250 mV.
- What is the resolution and sampling rate of the AMC1306M25DWVR?
The device has a resolution of 16 bits and a sampling rate of 78 kSPS.
- What kind of isolation does the AMC1306M25DWVR provide?
The device provides reinforced isolation of up to 7000 V PEAK according to DIN VDE V 0884-11 and 5000 V RMS according to UL1577.
- What are the key DC performance specifications of the AMC1306M25DWVR?
The device has an offset error of ±50 µV or ±100 µV (max), offset drift of 1 µV/°C (max), gain error of ±0.2% (max), and gain drift of ±40 ppm/°C (max).
- What safety certifications does the AMC1306M25DWVR hold?
The device is certified to various safety standards including DIN VDE V 0884-11, UL1577, CAN/CSA no. 5A, and IEC 62368-1.
- What is the operating temperature range of the AMC1306M25DWVR?
The device operates over an extended industrial temperature range of -40°C to 125°C.
- How does the Manchester coded version of the AMC1306M25DWVR support data transfer?
The Manchester coded versions support single-wire data and clock transfer without setup and hold time requirements.
- What are some typical applications of the AMC1306M25DWVR?
Typical applications include current measurements, isolated data acquisition systems, industrial control systems, medical devices, and automotive/aerospace applications.
- What is the package type and pin count of the AMC1306M25DWVR?
The device is packaged in an 8-pin SOIC (DWV) package.
