±250-mV input, precision reinforced isolated modulator with integrated DC/DC converter
Product details
Parameters
Package | Pins | Size
Features
- 3.3-V or 5-V single supply with integrated DC/DC converter
- ±250-mV input voltage range optimized for current measurement using shunt resistors
- Low DC errors:
- Offset error: ±50 µV (max)
- Offset drift: ±1 µV/°C (max)
- Gain error: ±0.2% (max)
- Gain drift: ±35 ppm/°C (max)
- High CMTI: 75 kV/µs (min)
- System-level diagnostic features
- Safety-related certifications:
- 6000-VPEAK reinforced isolation per DIN VDE V 0884-11
- 4250-VRMS isolation for 1 minute per UL1577
- Meets CISPR-11 and CISPR-25 EMI standards
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Description
The AMC3306M25 is a precision, delta-sigma (ΔΣ) modulator, optimized for shunt-based current measurements, with a fully integrated isolated DC/DC converter that allows single-supply operation from the low-side of the device. The reinforced capacitive isolation barrier is certified according to VDE V 0884-11 and UL1577. This isolation barrier separates parts of the system that operate on different common-mode voltage levels and protects lower-voltage parts from damage.
The input of the AMC3306M25 is optimized for direct connection to shunt resistors or other, low voltage-level signal sources. The integrated isolated DC/DC converter allows unconstrained placement of the shunt, independent of any high-side supply that is usually required to power the isolated modulator, and makes the device a unique solution for space-constrained applications.
The device supports excellent AC and DC performance over its linear input voltage range of ±250 mV. By using a digital filter or delta-sigma-filter module (such as those integrated in the TMS320F2807x or TMS320F2837x microcontroller families) to decimate the bitstream, the device can achieve 16 bits of resolution with a dynamic range of 85 dB at a data rate of 78 kSPS.
The AMC3306M25 is fully specified over the extended industrial temperature range of –40°C to +125°C.
Technical documentation
Type | Title | Date | |
---|---|---|---|
* | Datasheet | AMC3306M25 High-Precision, Reinforced Isolated Delta-Sigma Modulator datasheet (Rev. A) | Sep. 25, 2020 |
Technical articles | Simplify your isolated current and voltage sensing designs with single-supply isolated amplifiers and ADCs | Oct. 26, 2020 | |
User guide | AMC3306 Evaluation Module User's Guide | Mar. 02, 2020 | |
Technical articles | Chief Technology Officer Ahmad Bahai discusses isolation in a world of collaboration | Oct. 02, 2018 | |
Technical articles | Power trip: new integrated device sends power and data over isolation barrier | Apr. 04, 2017 | |
Technical articles | Get cerTIfied, not certi-FRIED! Electromagnetic compatibility testing explained (Part 4) | Feb. 06, 2015 |
Design & development
For additional terms or required resources, click any title below to view the detail page where available.Hardware development
Description
The AMC3306 evaluation module (EVM) is a platform for evaluating the AMC3306 product, a precision isolated amplifier with an integrated DC/DC converter that powers the high side of the amplifier. AMC3306 is a 7-kV reinforced isolation modulator designed for use in current shunt measuring (...)
Features
- Integrated DC/DC converter for high-side power
- Reinforced isolation modulator: 7-kV peak, 10-kV surge
- ±250-mV input range
- Delta-sigma modulator with 16 bits of resolution
Design tools & simulation
Features
- Leverages Cadence PSpice Technology
- Preinstalled library with a suite of digital models to enable worst-case timing analysis
- Dynamic updates ensure you have access to most current device models
- Optimized for simulation speed without loss of accuracy
- Supports simultaneous analysis of multiple products
- (...)
CAD/CAE symbols
Package | Pins | Download |
---|---|---|
SOIC (DWE) | 16 | View options |
Ordering & quality
- RoHS
- REACH
- Device marking
- Lead finish/Ball material
- MSL rating/Peak reflow
- MTBF/FIT estimates
- Material content
- Qualification summary
- Ongoing reliability monitoring
Recommended products may have parameters, evaluation modules or reference designs related to this TI product.
Support & training
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