Calculation tool
AMC1203
±250-mV input, precision current sensing basic isolated modulator with int clock
Data sheet
AMC1203
- Linear input voltage range: ±280mV
- Supply voltage range:
- High side: 4.5V to 5.5V
- Low side: 4.5V to 5.5V
- Low DC errors:
- AMC1203:
- Offset error: ±1mV (max)
- Offset drift: ±5µV/°C (max)
- Gain error: ±2% (max)
- Gain drift: ±20ppm/°C (max)
- AMC1203B:
- Offset error: ±1mV (max)
- Offset drift: ±5µV/°C (max)
- Gain error: ±1% (max)
- Gain drift: ±20ppm/°C (max)
- AMC1203:
- Transient immunity: 15kV/µs (min)
- Internal 10MHz clock generator
- Safety-related certifications:
- 3500VPEAK basic isolation per DIN EN IEC 60747-17 (VDE 0884-17)
- 2500VRMS isolation for 1 minute per UL1577
- Specified temperature range: –40°C to +105°C
The AMC1203 is a precision, galvanically isolated, delta-sigma (ΔΣ) modulator. The isolation barrier separates parts of the system that operate on different common-mode voltage levels. The isolation barrier is highly resistant to magnetic interference and is certified to provide basic isolation of up to 3500VPEAK according to the DIN EN IEC 60747-17 (VDE 0884-17) and UL1577 standards.
The input of the AMC1203 is optimized for direct connection to shunt resistors or other low-impedance signal sources. The output bitstream of the AMC1203 is synchronized to the internally generated clock. Combined with a digital low-pass filter, such as a sinc3, OSR 256 filter, the device achieves 16 bits of resolution with an 87dB dynamic range and a 39kSPS data rate.
The AMC1203 is offered in a SOP-8 gull-wing package (DUB), a SOP-8 package (PSA), and a SOIC-16 package (DW). The device is characterized over the ambient temperature range of –40°C to +105°C.
Technical documentation
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View all 14 Design & development
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Evaluation board
AMC1203EVM — AMC1203 evaluation module for 1-bit, 10-MHz, second-order, isolated delta-sigma modulator
The AMC1203 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 AMC1203EVM is a small form factor board containing all the necessary (...)
User guide: PDF
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
Calculation tool
SBAR013 — Isolated Amplifier Voltage Sensing Excel Calculator
This calculator provides estimates of the errors associated with using isolation amplifier devices in a voltage sensing configuration.
Supported products & hardware
Calculation tool
SBAR020 — Isolated Amplifier Current Sensing Excel Calculator
This calculator provides estimates of the errors associated with using isolation amplifier devices in a current sensing configuration.
Supported products & hardware
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 |
| SOP (DUB) | 8 | Ultra Librarian |
| SOP (PSA) | 8 | Ultra Librarian |
Ordering & quality
Information included:
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- MSL rating/Peak reflow
- MTBF/FIT estimates
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Information included:
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- Assembly location
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