MCP3903T-I/SS

Series:	--
Packaging:	Tape & Reel (TR)
Part Status:	Active
Number of Bits:	24
Number of Channels:	6
Voltage - Supply, Analog:	5V
Voltage - Supply, Digital:	2.7 V ~ 3.6 V
Package / Case:	28-SSOP (0.209", 5.30mm Width)
Supplier Device Package:	28-SSOP
Base Part Number:	MCP3903

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:<h2>Data Acquisition - Analog Front End (AFE)</h2> <p>The MCP3903T-I/SS is a high performance, low power, analog front end (AFE) that enables customers with multiple channel applications to measure AC rms and DC parameters. This device integrates a fast, high resolution Analog-to-Digital Converter (ADC) with delta-sigma modulators, flexible excitation current sources, multiplexed voltage/current input channels, and on-chip temperature sensor.</p><p>The MCP3903T-I/SS is a complete precision AFE that can measure DC voltage, DC current, and AC rms voltage. It is directed to single and multiple channel AC, DC and AC+DC applications, such as electronic metering, telephone loop current sensing, battery powered, and sensor measurement. applications requiring multiple simultaneous voltage measurements.</p><p>The MCP3903T-I/SS provides precise and accurate DC and AC measurements in a single integrated circuit. It utilizes a high resolution Delta-Sigma modulator with integrated digital filter to ensure precise signal acquisition. The device also has 31/2 5-bit voltage input channels that can measure up to 4V. The multiplexed current channels measure up to 4A.</p><h3>Applications</h3><p>The MCP3903T-I/SS can be used for various applications, including:</p><ul> <li>AC/DC/AC+DC energy measurement</li> <li>Telephone loop current sensing</li> <li>Battery powered applications </li> <li>Sensor measurement</li> <li>Other applications requiring multiple simultaneous voltage/current measurements</li></ul><h3>Working Principle</h3><p>The MCP3903T-I/SS is a fully-integrated, high-performance analog front-end that enables users to measure AC rms and DC parameters. The device can measure DC voltage, DC current and AC rms voltage. It utilizes a high resolution Delta-Sigma modulator with integrated digital filter to ensure precise signal acquisition.</p><p>The device has 31/2 5-bit voltage input channels that can measure up to 4V and multiplexed current channels that measure up to 4A. It also has an on-chip temperature sensor. The voltage, current, temperature and other signals are digitized by the internal Delta-Sigma modulator, and fed into the internal digital filter. The filtered digital data is sent to a low power digital signal processor (DSP) where the AC/DC values are calculated.</p><p>The low voltage operation of the MCP3903T-I/SS enables it to measure signals from 0V to 4V and currents from 0A to 4A. This is ideal for low power applications. The device also features low power consumption, allowing for extended battery life.</p><p>The MCP3903T-I/SS also has integrated safety features such as an over temperature alarm and a fault detection logic. This ensures that the device runs safely and reliably even in harsh operating conditions.</p><h3>Conclusion</h3><p>The MCP3903T-I/SS is a high performance, low power analog front end (AFE) that enables customers with multiple channel applications to measure AC rms and DC parameters. It is directed towards single and multiple channel AC, DC and AC+DC applications, such as electronic metering, telephone loop current sensing, battery powered, and sensor measurement applications. The device utilizes a high resolution Delta-Sigma modulator with integrated digital filter to ensure precise signal acquisition, and features low power consumption enabling extended battery life. The MCP3903T-I/SS also includes safety features such as an over temperature alarm and fault detection logic.</p>

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