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MCP3909 Datasheet(PDF) 1 Page - Microchip Technology |
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MCP3909 Datasheet(HTML) 1 Page - Microchip Technology |
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1 / 44 page  © 2009 Microchip Technology Inc. DS22025B-page 1 MCP3909 Features • Supports IEC 62053 International Energy Metering Specification and legacy IEC 1036/ 61036/687 Specifications • Digital waveform data access through SPI interface - 16-bit Dual ADC output data words - 20-bit Multiplier output data word • Dual functionality pins support serial interface access and simultaneous Active Power Pulse Output • Two 16-bit second order delta-sigma Analog-to-Digital Converters (ADCs) with multi-bit DAC - 81 dB SINAD (typ.) both channels • 0.1% typical active energy measurement error over 1000:1 dynamic range • PGA for small signal inputs supports low value shunt current sensor • Ultra-low drift on-chip reference: 15 ppm/°C (typical) • Direct drive for electromagnetic mechanical counter and two-phase stepper motors • Low IDD of 4 mA (maximum) • Tamper output pin for negative power indication • Industrial Temperature Range: -40°C to +85°C Description The MCP3909 device is an energy-metering IC designed to support the IEC 62053 international metering standard specification. It supplies a frequency output proportional to the average active real power, with simultaneous serial access to ADC channels and multiplier output data. This output waveform data is available at up to 14 kHz with 16-bit ADC output and 20-bit multiplier output words. The 16-bit, delta-sigma ADCs allow for a wide range of IB and IMAX currents and/or small shunt (<200 µOhms) meter designs. A no-load threshold block prevents any current creep measurements for the active power pulse outputs. The integrated on-chip voltage reference has an ultra-low temperature drift of 15 ppm per degree C. This accurate energy metering IC with high field reliability is available in the industry standard 24-lead SSOP pinout. Package Type Functional Block Diagram FOUT0 DGND NEG / SDO 1 2 3 4 24 23 22 21 20 19 18 17 5 6 7 8 FOUT1 NC CLKOUT CLKIN DVDD HPF AVDD NC CH0+ CHO- CH1- CH1+ HFOUT 16 9 G0 MCLR 15 14 10 11 G1 F0 / CS REFIN / OUT AGND 13 12 F1 / SDI F2 / SCK 24-Lead SSOP 16-bit DS ADC + – CH0+ CH0- Reference 2.4V + – CH1+ CH1- HPF1 LPF1 DTF conversion REFIN/ FOUT1 HFOUT G0 G1 F2/SCK F1/SDI FOUT0 OSC1 OSC2 OUT NEG/SDO HPF F0/CS Multi-level 16-bit DS ADC Multi-level X PGA Serial Control Buffers And Output Stepper Motor Output Drive Active Power SPI Interface Dual Functionality Pin Control 20 16 16 16 16 MCLR Sub-system Clock for Active Power HPF1 4k Ω Energy Metering IC with SPI Interface and Active Power Pulse Output |
Similar Part No. - MCP3909_09 |
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Similar Description - MCP3909_09 |
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