Overview
The STPMS2L-PUR, produced by STMicroelectronics, is a Smart Sensor II device designed for effective measurement in power line systems. It is an Application-Specific Standard Product (ASSP) that utilizes Rogowski coils, current transformers, and Hall or shunt sensors. This device is a crucial building block for single-phase or multi-phase energy meters, often used in conjunction with the STPMC1, a digital signal processor for energy measurement. The STPMS2L-PUR is suitable for medium and high-resolution measurement applications where single or double inputs need to be monitored simultaneously.
Key Specifications
| Parameter | Specification |
|---|---|
| VCC Supply Range | 3.2 V to 5.5 V |
| Modulators | Two second-order sigma-delta (ΣΔ) modulators |
| Amplifier | Programmable chopper-stabilized low noise and low offset amplifier |
| Standards Compliance | Supports 50-60 Hz, EN 50470-1, EN 50470-3, IEC 62053-21, IEC 62053-22, and IEC 62053-23 standard specs for class 1, class 0.5, and class 0.2 AC watt meters |
| Error Range | Less than 0.5% error over 1:5000 range (STPMS2L-PUR) |
| Voltage Reference | Precision voltage reference: 1.23 V with programmable TC |
| Regulator | Internal low drop regulator @ 3 V (typ.) |
| Package | VFQFPN 16 4x4x1.0 |
| Operating Temperature | -40°C to 85°C |
Key Features
- Mixed signal IC with both analog and digital sections
- Analog section includes programmable gain, low noise chopper amplifier, two second-order ΔΣ modulator blocks, bandgap voltage reference, low drop voltage regulator, and DC buffers
- Digital section includes a clock generator and output multiplexer
- Supports multiple sensor types: Rogowski coils, current transformers, and Hall or shunt sensors
- High accuracy and low error rate, making it suitable for class 1, class 0.5, and class 0.2 AC watt meters
Applications
The STPMS2L-PUR is primarily designed for use in smart metering systems, including single-phase and multi-phase energy meters. It is also applicable in various industrial and commercial energy measurement applications where high accuracy and reliability are required.
- Smart meters and smart metering systems
- Single-phase and multi-phase energy meters
- Industrial and commercial energy measurement
Q & A
- What is the STPMS2L-PUR used for?
The STPMS2L-PUR is used for effective measurement in power line systems, particularly in smart metering applications and energy meters.
- What types of sensors does the STPMS2L-PUR support?
The STPMS2L-PUR supports Rogowski coils, current transformers, and Hall or shunt sensors.
- What are the key components of the STPMS2L-PUR's analog section?
The analog section includes a programmable gain, low noise chopper amplifier, two second-order ΔΣ modulator blocks, a bandgap voltage reference, a low drop voltage regulator, and DC buffers.
- What standards does the STPMS2L-PUR comply with?
The STPMS2L-PUR complies with 50-60 Hz, EN 50470-1, EN 50470-3, IEC 62053-21, IEC 62053-22, and IEC 62053-23 standard specs for class 1, class 0.5, and class 0.2 AC watt meters.
- What is the error range of the STPMS2L-PUR?
The STPMS2L-PUR has an error range of less than 0.5% over a 1:5000 range.
- What is the operating temperature range of the STPMS2L-PUR?
The operating temperature range is -40°C to 85°C.
- What package type does the STPMS2L-PUR come in?
The STPMS2L-PUR comes in a VFQFPN 16 4x4x1.0 package.
- Is the STPMS2L-PUR RoHS compliant?
- What is the typical current consumption of the STPMS2L-PUR?
The typical current consumption is around 1.2 mA.
- Can the STPMS2L-PUR be used in both single-phase and multi-phase energy meters?
