Overview
The AMC1204BDWVR, produced by Texas Instruments, is a 1-bit digital output, isolated delta-sigma (ΔΣ) modulator designed for high-precision current measurement applications. This component is particularly optimized for use with shunt resistors in various industrial settings, including motor control inverters and green energy generation systems. The AMC1204BDWVR provides a single-chip solution with galvanic isolation, ensuring safe and reliable measurement across isolated barriers. It operates over an extended industrial temperature range of –40°C to 105°C and is available in an 8-pin SOIC (DWV) package.
Key Specifications
| Parameter | Value | Unit |
|---|---|---|
| Package Type | SOIC-8 (DWV) | |
| Pins | 8 | |
| Operating Temperature Range | –40 to 125 | °C |
| Analog Voltage AVDD | 4.5 to 5.5 | V |
| Digital Supply DVDD | 3 to 5.5 | V |
| Input Range | ±250 mV | Vp-p |
| Sample Rate (max) | 78 kSPS | |
| Isolation | 4250 V peak | |
| CMTI (Min) | 15 kV/µs | |
| Power Consumption (Typ) | 88 mW | |
| Resolution | 16 Bits (effective 14 bits with external filter) | |
| SNR (Min) | 84 dB | |
| THD (Max) | –80 dB |
Key Features
- ±250-mV input voltage range optimized for shunt resistors.
- Safety-related certifications: 4250-V peak basic isolation per DIN VDE V 0884-11: 2017-01, 3005-V RMS isolation for 1 minute per UL1577, and compliance with CAN/CSA no. 5A-component acceptance service notice and DIN EN 61010-1.
- High electromagnetic field immunity and transient immunity of 15 kV/µs.
- Outstanding AC performance with SNR of 84 dB (minimum) and THD of –80 dB (maximum).
- Excellent DC precision with INL of ±8 LSB (maximum) and gain error of ±2% (maximum).
- External clock input for easier synchronization.
- Internal reference eliminates the need for external components.
- Available in SOIC-8 (DWV) and SOIC-16 (DW) packages.
Applications
The AMC1204BDWVR is typically used in industrial applications such as:
- Current sensing in motor control inverters.
- Green energy generation systems.
- Other industrial applications requiring precise current measurement across isolated barriers.
Q & A
- What is the primary function of the AMC1204BDWVR?
The AMC1204BDWVR is a 1-bit digital output, isolated delta-sigma modulator designed for high-precision current measurement, particularly with shunt resistors in industrial applications.
- What are the key safety certifications of the AMC1204BDWVR?
The component is certified for 4250-V peak basic isolation per DIN VDE V 0884-11: 2017-01, 3005-V RMS isolation for 1 minute per UL1577, and complies with CAN/CSA no. 5A-component acceptance service notice and DIN EN 61010-1.
- What is the operating temperature range of the AMC1204BDWVR?
The component operates over an extended industrial temperature range of –40°C to 105°C.
- What is the maximum sample rate of the AMC1204BDWVR?
The maximum sample rate is 78 kSPS.
- What is the isolation voltage of the AMC1204BDWVR?
The isolation voltage is up to 4250 V peak.
- What is the typical power consumption of the AMC1204BDWVR?
The typical power consumption is 88 mW.
- What is the resolution of the AMC1204BDWVR?
The resolution is 16 bits, with an effective 14 bits achievable with an external digital filter.
- What are the key AC performance metrics of the AMC1204BDWVR?
The component has an SNR of 84 dB (minimum) and a THD of –80 dB (maximum).
- What are the typical applications of the AMC1204BDWVR?
Typical applications include current sensing in motor control inverters, green energy generation systems, and other industrial applications requiring precise current measurement across isolated barriers.
- What package types are available for the AMC1204BDWVR?
The component is available in SOIC-8 (DWV) and SOIC-16 (DW) packages.
