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MCP3905A Datasheet(PDF) 1 Page - Microchip Technology |
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MCP3905A Datasheet(HTML) 1 Page - Microchip Technology |
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1 / 32 page  © 2006-2011 Microchip Technology Inc. DS22011B-page 1 MCP3905A/05L/06A Features • Supplies active (real) power measurement for single-phase, residential energy metering • Supports IEC 62053 International Energy Metering Specification and legacy IEC 1036/61036/687 Specifications • Two multi-bit, DAC, second-order, 16-bit, Delta- Sigma Analog-to-Digital Converters (ADCs) • Reduced pulse-width of calibration output frequency and mechanical counter drive for low power meter designs (MCP3905L) • Increased output frequency constant options for meter design (MCP3905L) • 0.1% typical measurement error over 500:1 dynamic range (MCP3905A / MCP3905L) • 0.1% typical measurement error over 1000:1 dynamic range (MCP3906A) • Programmable Gain Amplifier (PGA) for small signal inputs supports low value shunt current sensor: - 16:1 PGA - MCP3905A / MCP3905L - 32:1 PGA - MCP3906A • 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 (typical) • Tamper output pin for negative power indication • Industrial Temperature Range: -40°C to +85°C • Extended Temperature Range: -40°C to +125°C • Supplies instantaneous real power on HFOUT for meter calibration Description The MCP3905A/05L/06A devices are energy-metering ICs designed to support the IEC 62053 international metering standard specification. They supply a frequency output proportional to the average active real power, as well as a higher-frequency output proportional to the instantaneous power for meter calibration. The MCP3905L offers reduced pulse width of calibration output frequency and mechanical counter drive for lower power meter designs. They include two 16-bit, Delta-Sigma ADCs for a wide range of IB and IMAX currents and/or small shunt (<200 µOhms) meter designs. It includes an ultra-low drift voltage reference with < 15 ppm/°C through a specially designed band gap temperature curve for the minimum gradient across the industrial temperature range. A fixed- function DSP block is on-chip for active real-power calculation. A no-load threshold block prevents any current creep measurements. A Power-On Reset (POR) block restricts meter performance during low- voltage situations. These accurate energy metering ICs with high field reliability are available in the industry standard pinout. Package Type Functional Block Diagram FOUT0 DGND NEG 1 2 3 4 24 23 22 21 20 19 18 17 5 6 7 8 FOUT1 NC OSC2 OSC1 DVDD HPF AVDD NC CH0+ CH0- CH1- CH1+ HFOUT 16 9 G0 MCLR 15 14 10 11 G1 F0 REFIN/OUT AGND 13 12 F1 F2 24-Pin SSOP 16-bit ΔΣ ADC MCLR + – CH0+ CH0- Reference 2.4V + – CH1+ CH1- HPF1 LPF1 E-to-F conversion REFIN/ FOUT1 HFOUT G0 G1 F2 F1 FOUT0 OSC1 OSC2 OUT NEG HPF F0 Multi-level 16-bit ΔΣ ADC Multi-level X HPF1 PGA POR Energy Metering ICs with Active Real Power Pulse Output |
Similar Part No. - MCP3905A_11 |
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Similar Description - MCP3905A_11 |
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