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AMC1204
- ±250-mV input voltage range optimized for shunt resistors
- Safety-related certifications:
- 4250-VPK (AMC1204B) basic isolation per DIN VDE V 0884-11: 2017-01
- 3005-VRMS (AMC1204B) isolation for 1 minute per UL1577
- CAN/CSA no. 5A-component acceptance service notice and DIN EN 61010-1
- Working voltage: 1200 VPEAK
- Transient immunity: 15 kV/µs
- High electromagnetic field immunity
(see SLLA181A application report) - Outstanding AC performance:
- SNR: 84 dB (minimum)
- THD: –80 dB (maximum)
- Excellent DC precision:
- INL: ±8 LSB (maximum)
- Gain Error: ±2% (maximum)
- External clock input for easier synchronization
- Fully specified over the extended industrial temperature range
The AMC1204 and AMC1204B are 1-bit digital output, isolated delta-sigma (ΔΣ) modulators that can be clocked at up to 20 MHz. The digital isolation of the modulator output is provided by a silicon dioxide (SiO2) barrier that is highly resistant to magnetic interference. This barrier has been certified to provide basic galvanic isolation of up to 4000 VPEAK (AMC1204) and 4250 VPEAK (AMC1204B) according to UL1577, VDE V 0884-11, and CSA standards or specifications.
The AMC1204 and AMC1204B provide a single-chip solution for measuring the small signal of a shunt resistor across an isolated barrier. These types of resistors are typically used to sense currents in motor control inverters, green energy generation systems, and other industrial applications. The AMC1204 and AMC1204B differential inputs easily connect to the shunt resistor or other low-level signal sources. An internal reference eliminates the need for external components. When used with an appropriate external digital filter, an effective number of bits (ENOB) of 14 is achieved at a data rate of 78 kSPS.
A 5-V analog supply (AVDD) is used by the modulator while the isolated digital interface operates from a 3-V, 3.3-V, or 5-V supply (DVDD). The AMC1204 and AMC1204B are available in SOIC-16 (DW) and SOIC-8 (DWV) packages and are specified from –40°C to 105°C.
Technical documentation
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Evaluation board
AMC1204EVM — AMC1204 evaluation module for 1-bit, 20-MHz, second-order, isolated delta-sigma modulator
The AMC1204 is an isolated single-channel delta-sigma (ΔΣ) modulator used in high-resolution measurement applications including current monitoring, industrial process control and motor positioning systems. The AMC1204EVM is a small form factor board containing all the necessary (...)
User guide: PDF
Evaluation board
AMC1210MB-EVM — AMC1210 motherboard evaluation module
The AMC1210MB-EVM is a complete evaluation kit for the AMC1210 & ADS1205 in resolver applications and part of a modular evaluation system for evaluating TI delta-sigma modulators. The AMC1210MB-EVM software allows use of the AMC1210 in a variety of configurations for resolver and current shunt (...)
User guide: PDF
Evaluation board
PP-SALB2-EVM — PP-SALB2-EVM Smart amp speaker characterization board evaluation module (Learning Board 2)
This board supports: TAS2555YZEVM, TAS2557EVM and TAS2559EVM.
The Smart Amplifier Speaker Characterization Board, when used in conjunction with a supported TI Smart Amplifier and PurePath Console software, provides users the ability to measure speaker excursion, temperature and other parameters for (...)
User guide: PDF
Reference designs
TIDM-SERVODRIVE — Industrial Servo Drive and AC Inverter Drive Reference Design
The DesignDRIVE Development Kit is a reference design for a complete industrial drive directly connecting to a three phase ACI or PMSM motor. Many drive topologies can be created from the combined control, power and communications technologies included on this single platform. Includes (...)
Reference designs
TIDM-02006 — Distributed multi-axis servo drive over fast serial interface (FSI) reference design
This reference design presents an example distributed or decentralized multi-axis servo drive over Fast Serial Interface (FSI) using C2000™ real-time controllers. Multi-axis servo drives are used in many applications such as factory automation and robots. The cost per axis, performance and (...)
Reference designs
TIDA-RESOLVER-APPLICATIONS-REFERENCE-DESIGN — Motherboard/controller for the AMC1210
This is a reference design for resolver applications and part of a modular system for evaluating our delta-sigma modulators. The software included allows use of the AMC1210 in a variety of configurations for resolver and current-shunt applications and features a data-export utility to support data (...)
| Package | Pins | CAD symbols, footprints & 3D models |
|---|---|---|
| SOIC (DW) | 16 | Ultra Librarian |
| SOIC (DWV) | 8 | Ultra Librarian |
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