PDF BL0955 Data sheet ( Hoja de datos )

Número de pieza	BL0955
Descripción	Single Phase Energy Metering IC
Fabricantes	Shanghai Belling
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No Preview Available ! mBL0955 Single-Phase Energy MeteringIC o(compatible with AD7755) u.cGENERAL DESCRIPTION: et4The BL0955 is a high accuracy electrical energy measurement IC. The part specifications surpass ethe accuracy requirements as quoted in the IEC1036 standard. See Analog Devices’ Application hNote AN-559 for a description of an IEC1036 watt-hour meter reference design. tasThe only analog circuitry used in the BL0955 is in the ADCs and reference circuit. All other asignal processing (e.g., multiplication and filtering) is carried out in the digital domain. .dThis approach provides superior stability and accuracy over extremes in environmental conditions and over time. wwThe BL0955 supplies average real power information on the low frequency outputs F1 and wF2. These logic outputs may be used to directly drive an electromechanical counter or interface to an MCU. The CF logic output gives instantaneous real power information. This output is intended to be used for calibration purposes, or interfacing to an MCU. The BL0955 includes a power supply monitoring circuit on the AVDD supply pin. The BL0955 will remain in a reset condition until the supply voltage on AVDD reaches 4 V. If the supply falls below 4 V, the BL0955 will also be reset and no pulses will be issued on F1, F2 and CF. Internal phase matching circuitry ensures that the voltage and current channels are phase matched whether the HPF in Channel 1 is on or off. An internal no-load threshold ensures that the BL0955 does not exhibit any creep when there is no load. The BL0955 is available in 24-lead DIP and SSOP packages. DIP24 SSOP24 Address No.810, YiShan Road ShangHai China Tel 86-021-64850700 Fax 86-64852222 Zip.200233 1 page BL0955 Single-Phase Energy MeteringIC (compatible with AD7755) DVDD to AVDD . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .. . . . . . . . . . . . . . –0.3 V to +0.3 V Analog Input Voltage to AGND V1P, V1N, V2P and V2N . . . . . . . . . . . . . . . . –6 V to +6 V Reference Input Voltage to AGND . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . –0.3 V to AVDD + 0.3 V Digital Input Voltage to DGND . . . . . . . . . . . . . . . . . . . . . . . . .. . . . . . . . . . . .. . –0.3 V to DVDD + 0.3 V Digital Output Voltage to DGND . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .. ¨–0.3 V to DVDD + 0.3 V Operating Temperature Range Industrial (A, B Versions) . . . . . . . . . . . . . . . . . ¨–40 C to +85 C Storage Temperature Range . . . . . . . . . . . . . . . . . . . . . . . . .. . . . . . . . . . . . . . –65 C to +150 C Junction Temperature . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .. . . . . . . .. . . . . +150 C 24-Lead Plastic DIP, Power Dissipation . . . . . . . . . . . . . . .. . . . . . . . . . . . . . . . 450 mW θ JA Thermal Impedance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .. . . . . . . . . . . . 105 C/W Lead Temperature, (Soldering 10 sec) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . +260 C 24-Lead SSOP, Power Dissipation . . . . . . . . . . . . . . . . . . . . . . . . . .. . . . . . . . . 450 mW θ JA Thermal Impedance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .. . . . . . . . . . . . 112 C/W Lead Temperature, Soldering Vapor Phase (60 sec) . . . . . . . . . . . . . . . . . . . . . . . . . .. . . . .. . . . . . . . . . . . . . +215 C Infrared (15 sec) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .. . .. . . . . . . . . . . . . . . . +220 C *Stresses above those listed under Absolute Maximum Ratings may cause permanent damage to the device. This is a stress rating only; functional operation of the device at these or any other conditions above those listed in the operational sections of this specification is not implied. Exposure to absolute maximum rating conditions for extended periods may affect device reliability. CAUTION ESD (electrostatic discharge) sensitive device. Electrostatic charges as high as 4000 V readily accumulate on the human body and test equipment and can discharge without detection. Although the BL0955 features proprietary ESD protection circuitry, permanent damage may occur on devices subjected to high energy electrostatic discharges. Therefore, proper ESD precautions are recommended to avoid performance degradation or loss of functionality. TERMINOLOGY MEASUREMENT ERROR The error associated with the energy measurement made by the BL0955 is defined by the following formula: Pencentage Error = Energy Re gistered by the BL0955 − True Energy ×100% True Energy PHASE ERROR BETWEEN CHANNELS The HPF (High Pass Filter) in Channel 1 has a phase lead response. To offset this phase response and Address No.810, YiShan Road ShangHai China Tel 86-021-64850700 Fax 86-64852222 Zip.200233 5 Page BL0955 Single-Phase Energy MeteringIC (compatible with AD7755) Figure 6. Error as a% of Reading (Gain=1) Figure 7. Error as a% of Reading (Gain=2) Figure 8. Error as a% of Reading (Gain=8) Figure 9. Error as a% of Reading (Gain=16) Address No.810, YiShan Road ShangHai China Tel 86-021-64850700 Fax 86-64852222 Zip.200233 11 Page

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