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The STPM34 single-phase meter ICs belong to the ASSP family and they use Roche coils, current transformers or bypass current sensors to achieve highly accurate measurements of power and electrical energy in power line systems. These devices provide instantaneous voltage and current waveforms and calculate root mean square (rms) values of voltage and current, active power, reactive power, apparent power and electrical energy.The STPM34 is a family of mixed signal ICs consisting of an analogue section and a digital section. The analogue section contains up to two programmable gain low-noise low-distortion amplifiers and up to four second-order 24-bit sigma-delta analogue-to-digital converters, two energy-gap voltage references with independent temperature compensation, a low dropout voltage regulator and several DC buffers. The digital section contains the digital filter stage, a hard-wired DSP, DFE connection inputs and a serial communication interface (UART or SPI). They are fully configurable and require only one point of load for fast digital system calibration over the entire current dynamic range.

Features

-Active power accuracy.

-<0.1% error over 5000: 1 dynamic range

-Error <0.5% over 10000: 1 dynamic range

-Over 50-60 Hz EN 50470-x, IEC 62053-2x

ANSI 12.2x standard requirements for AC meters

-Reactive power accuracy.

-2000 error < 0.1%: 1 dynamic range

-Dual mode apparent energy calculation

-Instantaneous and average power

-RMS and instantaneous voltage and current

-Under- and over-voltage detection (sag and swell) and monitoring

-Overcurrent detection and monitoring

-UART and SPI serial interfaces with programmable CRC polynomial verification

-Programmable LED and interrupt outputs

-Four independent 24-bit second-order ∑-Δ ADCs

-Two programmable gain chopper stabilised low noise and low offset amplifiers

-Bandwidth 3.6 kHz, -3 dB

-Vcc supply range 3.3 V±10%

-Supply current Icc 4.3 mA (STPM32)

-Input clock frequency 16 MHz, Xtal or external supply

-Double precision voltage reference: 1.18 V with independently programmable TC, 30 ppm/°C typical

-Internal low dropout regulator at 3 V (typical)

-QFN package

-Operating temperature from -40°C to +105°C 

• 1.Is the inventory and price seen on the platform accurate?

  A: all online goods on the shelves can be ordered online, but considering the large liquidity of spot inventory, it is not possible to achieve 100% accuracy at present. In case of any abnormality, you can contact our company online and give the corresponding solution.

• 2.Are all our products genuine?

  A: our self-supporting products are from cooperative domestic and foreign original factories or authorized agents, and the source can be traced to ensure the original and authentic products.

• 3.Can you provide the qualification certificate of the original factory or agent?

  A: at present, our self-employed brands TI，ST，ADI，NXP，LATTICE，CYPRESS，INFINEON，XILINX and other first-line brands. Other channels are the original factory and agency channels. If necessary, we can communicate and confirm according to the specific brand and model.

• 4.Can I make an inquiry through the company's website?

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• 5.When can I deliver the goods after placing an order? How long will it take to get there?

  A: the delivery date is marked in most commodity information. You can estimate the delivery time of the commodity according to the delivery date. The specific arrival time depends on the warehouse where the commodity is located and the logistics mode you choose.

• 6.Can the company issue an invoice?

  A: you can issue ordinary invoices for individual users or special VAT invoices for enterprise users.