MCP3905A Series

16-Bit Energy Metering ADC

Catalog

16-Bit Energy Metering ADC

Part	Function	Type	Supplied Contents	Utilized IC / Part	Primary Attributes [Min]	Primary Attributes [Max]	Primary Attributes	Voltage - I/O Low	Measurement Error	Package / Case	Supplier Device Package	Voltage - I/O High [custom]	Operating Temperature [Max]	Operating Temperature [Min]	Input Impedance	Current - Supply	Mounting Type	Meter Type	Voltage - Supply [Min]	Voltage - Supply [Max]
Microchip Technology MCP3905EV	Energy/Power Meter	Power Management	Board(s)	MCP3905/6	120 VAC	220 VAC	1-Phase On Board Transformerless AC/DC 5V Supply
Microchip Technology MCP3905LT-E/SS								0.85 V	0.1 %	24-SSOP	24-SSOP	2.4 V	125 °C	-40 °C	390 kOhm	2.7 mA	Surface Mount	Single Phase	4.5 V	5.5 V
Microchip Technology MCP3905T-I/SS								0.85 V	0.1 %	24-SSOP	24-SSOP	2.4 V	85 °C	-40 °C	390 kOhm	2.7 mA	Surface Mount	Single Phase	4.5 V	5.5 V
Microchip Technology MCP3905L-I/SS								0.85 V	0.1 %	24-SSOP	24-SSOP	2.4 V	85 °C	-40 °C	390 kOhm	2.7 mA	Surface Mount	Single Phase	4.5 V	5.5 V
Microchip Technology MCP3905A-E/SS								0.85 V	0.1 %	24-SSOP	24-SSOP	2.4 V	125 °C	-40 °C	390 kOhm	2.7 mA	Surface Mount	Single Phase	4.5 V	5.5 V
Microchip Technology MCP3905L-E/SS								0.85 V	0.1 %	24-SSOP	24-SSOP	2.4 V	125 °C	-40 °C	390 kOhm	2.7 mA	Surface Mount	Single Phase	4.5 V	5.5 V
Microchip Technology MCP3905LT-I/SS								0.85 V	0.1 %	24-SSOP	24-SSOP	2.4 V	85 °C	-40 °C	390 kOhm	2.7 mA	Surface Mount	Single Phase	4.5 V	5.5 V
Microchip Technology MCP3905AT-I/SS								0.85 V	0.1 %	24-SSOP	24-SSOP	2.4 V	85 °C	-40 °C	390 kOhm	2.7 mA	Surface Mount	Single Phase	4.5 V	5.5 V
Microchip Technology MCP3905-I/SS								0.85 V	0.1 %	24-SSOP	24-SSOP	2.4 V	85 °C	-40 °C	390 kOhm	2.7 mA	Surface Mount	Single Phase	4.5 V	5.5 V

Catalog

16-Bit Energy Metering ADC

Key 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

• * 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)

• * Programmable Gain Amplifier (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

Description

The MCP3905L is an energy measurement IC supporting the IEC 62053 international energy metering specification. The output of the device includes a frequency proportional to the average active (real) power at the inputs as well as a higher frequency output proportional to the instantaneous power for meter calibration. The MCP3905L incorporates two 16-bit delta-sigma ADCs with a progammable gain up to 16, which enable small shunt meter designs for measuring a wide range of Ib and Imax currents. The integrated on-chip voltage reference has ultra-low temperature drift of 15 ppm per degree C. Also on-chip is a fixed-function DSP for active (real) power calculation. The MCP3905L offers reduced pulse width of calibration output frequency and mechanical counter drive for low power meter designs.