Texas Instruments AMC1333M10/-Q1 Reinforced Isolated Modulators
Texas Instruments AMC1333M10/-Q1 Reinforced Isolated Delta-Sigma Modulators separate the output from the input circuitry with an isolation barrier highly resistant to magnetic interference. These isolation barriers are certified to allow reinforced isolation of up to 8000VPEAK according to the DIN EN IEC 60747-17 (VDE 0884-17) and UL1577 standards and support a working voltage up to 1.5kVRMS. Furthermore, the isolation barrier separates parts of the system that operate on different common-mode voltage levels and protects the low-voltage side from voltages that can cause electrical damage or harm an operator. The AMC1333M10-Q1 devices are AEC-Q100 qualified for automotive applications.
The TI AMC1333M10 Reinforced Isolated Delta-Sigma Modulator delivers a comprehensive, bipolar, ±1V input voltage range and a high input resistance that supports a direct connection to resistive dividers in high-voltage applications. The device's output bitstream is synchronized to the internally generated clock.
The device can achieve 16-bits resolution with a dynamic range of 87dB at a data rate of 39kSPS, using an integrated digital filter (such as those in the TMS320F2807x or TMS320F2837x microcontroller families) to decimate the bitstream.
The AMC1333M10 is housed in an 8-pin, wide-body, SOIC package and is fully specified over the extended industrial temperature range of –40°C to +125°C.
Features
- ±1 V Linear input voltage range
- 2.4GΩ (typ) High input impedance
- Low DC errors:
- ±0.5mV (max) Offset error
- ±4µV/°C (max) Offset drift
- ±0.2% (max) Gain error
- ±40ppm/°C (max) Gain drift
- 100kV/µs (min) High CMTI
- Internal 10MHz clock generator
- Missing high-side supply detection
- Low EMI: Meets CISPR-11 and CISPR-25 standards
- Safety-related certifications:
- 8000VPEAK reinforced isolation per DIN EN IEC 60747-17 (VDE 0884-17)
- 5700VRMS isolation for 1 minute per UL1577
- –40°C to +125°C Fully specified over an extended industrial temperature range
Applications
- Motor drives
- Frequency inverters
- Protection relays
- Power supplies
Associated Eval Module
Texas Instruments AMC1333M10EVM Modulator Evaluation Module (EVM)
Designed to help evaluate the AMC1333, a 1-bit modulator with an output buffer.
Typical Application
Functional Block Diagram
