MCP3905T-I/SS

MCP3905T-I/SS Datasheet

MCP3905/06

Part	Datasheet
MCP3905T-I/SS	MCP3905T-I/SS (pdf)

Related Parts	Information
MCP3906-I/SS	MCP3906-I/SS
MCP3906T-I/SS	MCP3906T-I/SS
MCP3905-I/SS	MCP3905-I/SS

PDF Datasheet Preview
MCP3905/06 Energy-Metering ICs with Active Real Power Pulse Output • Supplies active real power measurement for single-phase, residential energy-metering • Supports the IEC 62053 International Energy Metering Specification and legacy IEC 1036/61036/687 Specifications • Two multi-bit, Digital-to-Analog Converters DACs , second-order, 16-bit, Delta-Sigma Analog-to-Digital Converters ADCs • typical measurement error over 500:1 dynamic range MCP3905 • typical measurement error over 1000:1 dynamic range MCP3906 • Programmable Gain Amplifier PGA for smallsignal inputs supports low-value shunt current sensor - 16:1 PGA - MCP3905 - 32:1 PGA - MCP3906 • Ultra-low drift on-chip reference 15 ppm/°C typ. • Direct drive for electromagnetic mechanical counter and two-phase stepper motors • Low IDD of 4 mA typ. • Tamper output pin for negative power indication • Industrial Temperature Range -40°C to +85°C • Supplies instantaneous active real power on HFOUT for meter calibration US Patents Pending Functional Block Diagram G0 G1 CH0+ CH0- REFIN/ OUT CH1+ CH1- + PGA 16-bit Multi-level 2.4V Reference 16-bit Multi-level HPF HPF1 HPF1 The MCP3905/06 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. 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 onchip for active real power calculation. Strong output drive for mechanical counters are on-chip to reduce field failures and mechanical counter sticking. A noload 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 24-Pin SSOP DVDD 1 HPF 2 AVDD 3 NC 4 CH0+ 5 CH0- 6 CH1- 7 CH1+ 8 MCLR 9 REFIN/OUT 10 AGND 11 F2 12 24 FOUT0 23 FOUT1 22 HFOUT 21 DGND 20 NEG 19 NC 18 OSC2 17 OSC1 16 G0 15 G1 14 F0 13 F1 OSC1 OSC2

PDF Datasheet Preview

MCP3905/06

Energy-Metering ICs with Active Real Power Pulse Output
• Supplies active real power measurement for single-phase, residential energy-metering
• Supports the IEC 62053 International Energy Metering Specification and legacy IEC 1036/61036/687 Specifications
• Two multi-bit, Digital-to-Analog Converters DACs , second-order, 16-bit, Delta-Sigma Analog-to-Digital Converters ADCs
• typical measurement error over 500:1 dynamic range MCP3905
• typical measurement error over 1000:1 dynamic range MCP3906
• Programmable Gain Amplifier PGA for smallsignal inputs supports low-value shunt current sensor - 16:1 PGA - MCP3905 - 32:1 PGA - MCP3906
• Ultra-low drift on-chip reference 15 ppm/°C typ.
• Direct drive for electromagnetic mechanical
counter and two-phase stepper motors
• Low IDD of 4 mA typ.
• Tamper output pin for negative power indication
• Industrial Temperature Range -40°C to +85°C
• Supplies instantaneous active real power on

HFOUT for meter calibration

US Patents Pending

Functional Block Diagram

G0 G1

CH0+ CH0-

REFIN/ OUT

CH1+ CH1-
+ PGA
16-bit Multi-level
2.4V Reference
16-bit Multi-level

HPF HPF1

HPF1

The MCP3905/06 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. 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 onchip for active real power calculation. Strong output drive for mechanical counters are on-chip to reduce field failures and mechanical counter sticking. A noload 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
24-Pin SSOP

DVDD 1 HPF 2

AVDD 3 NC 4

CH0+ 5

CH0- 6

CH1- 7

CH1+ 8

MCLR 9

REFIN/OUT 10

AGND 11

F2 12
24 FOUT0 23 FOUT1 22 HFOUT 21 DGND 20 NEG
19 NC 18 OSC2 17 OSC1
16 G0 15 G1 14 F0
13 F1

OSC1 OSC2

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Datasheet ID: MCP3905T-I/SS 648137