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LIMCHIP CO., LIMITED
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RFQ ListingPower Management ICs
BL0940 is a Shanghai Belling calibration-free single-phase energy metering front end integrating two sigma-delta ADCs, a 1.218 V reference and an on-chip oscillator. It measures current, voltage RMS, active power and active energy, reporting over UART or SPI for smart sockets, smart appliances, e-bike charging piles and single-phase meters.
ManufacturerShanghai Belling
PackageTSSOP-14
SeriesBL0940
Power IC Specifications
| Parameter | Value / Specification |
|---|---|
| Function / Topology | Calibration-free single-phase energy metering AFE with two Sigma-Delta ADCs (one current, one voltage) |
| Supply Voltage | 3.0 V to 3.6 V single supply, about 10 mW typical power consumption |
| Output Voltage / Current | Active-energy pulse (CF) output plus UART/SPI data output; current channel up to 30 mV rms input |
| Measurement Range | Current RMS 10 mA to 35 A @ 1 mOhm shunt; active energy 1 W to 7700 W @ 220 V; 4000:1 dynamic range |
| Accuracy / Reference | Active energy error under 0.1% across the 4000:1 range; batch gain error under 1% enabling calibration-free designs; 1.218 V on-chip reference |
| Clock | About 4 MHz on-chip oscillator, no external clock required |
| Monitoring | Programmable leakage and overcurrent monitoring with configurable threshold and response; power-down reset below 2.7 V |
| Temperature Grade | -40 °C to +85 °C |
| Package / Case | TSSOP-14 |
Power Features & Applications
- Calibration-free metering with batch gain error under 1%
- Two independent Sigma-Delta ADCs for current and voltage channels
- Measures RMS current/voltage, fast current RMS, active power and energy
- Patented anti-creep design excludes noise power from energy pulses
- SPI up to 900 kHz or UART output with waveform register for load analysis
- Built-in 1.218 V reference and 4 MHz oscillator reduce external parts
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Frequently Asked Questions
Is BL0940 available from LimChip?
LimChip can confirm current availability, price, quantity, date code and lead time for BL0940 by RFQ.
What should buyers check before ordering BL0940?
Buyers should check voltage range, current rating, package, protection features and date code for BL0940, together with live stock and traceable supply.
How do I request a quote for BL0940?
Use the RFQ button and include required quantity, target date code, package/case requirement, delivery country, company name and contact details.