STPM01
Programmable single phase energy metering IC with tamper detection
Features
■ Active, reactive, apparent energie...
STPM01
Programmable single phase energy metering IC with tamper detection
Features
■ Active, reactive, apparent energies and RMS values
■ Ripple free active energy pulsed output ■ Live and neutral monitoring for tamper
detection ■ Easy and fast digital calibration in only one
point over the whole current range ■ OTP for calibration and configuration ■ Integrated linear VREGs for digital and analog
supply ■ Selectable RC or crystal oscillator ■ Support 50 ÷ 60 Hz – IEC62052-11, IEC62053-
2x specification ■ Less than 0.1 % error ■ Precision voltage reference: 1.23 V and 30
ppm/°C max
Description
The STPM01 is designed for effective measurement of active, reactive and apparent energy in a power line system using Rogowski coil, current transformer and shunt sensors. This device can be implemented as a single chip monophase energy meter or as a peripheral measurement in a microcontroller based monophase or 3-phase energy meter. The STPM01 consists, essentially, of two parts: the analog part and the digital part. The former, is composed by preamplifier and 1st order Δ ∑ A/D converter blocks, band gap voltage reference, low drop voltage
regulator, the latter, is composed by system control, oscillator, hard wired DSP and SPI interface. There is also an OTP block, which is controlled through the SPI by means of a
Table 1. Device summary
Order code
Temperature range
STPM01FTR
- 40 to 85 °C
TSSOP20
dedicated command set. The configured bits are used for testing, configuration a...