MCP3550T-60E/SN

Analog To Digital Converters (ADC) Overview

The MCP3550T-60E/SN is a low-power, single-channel 22-bit Delta-Sigma Analog-to-Digital Converter (ADC) manufactured by Microchip Technology. It operates on a single supply voltage ranging from 2.7V to 5.5V and features fully differential analog inputs with a common mode range extending from VSS to VDD. The device incorporates an internal oscillator and a fourth-order modified SINC digital decimation filter, providing a typical output data rate of 15 Hz (conversion time of 66.67 ms) optimized for 60 Hz line frequency rejection. Key electrical specifications include a maximum Integral Non-Linearity (INL) error of 6 ppm, a typical offset error of 3 µV, and an output noise of 2.5 µV RMS, yielding an effective resolution of 21.9 bits.

Analog To Digital Converters (ADC) Feature Summary

• 22-bit resolution with 21.9 Effective Number of Bits (ENOB) and 2.5 µV RMS output noise
• Integrated fourth-order SINC4 digital filter providing >120 dB rejection at 60 Hz
• Automatic internal offset and gain calibration performed in real-time during conversion
• Ultra-low power consumption: 140 µA typical at 5V; <1 µA in shutdown mode
• 3-wire SPI interface supporting clock speeds up to 5 MHz

Analog To Digital Converters (ADC) Applications

• Weigh scales and load cell measurements
• Direct temperature measurement using thermocouples or RTDs
• Strain gauge and pressure sensor signal conditioning
• 6-digit Digital Voltmeters (DVMs)
• Industrial instrumentation and data acquisition systems

Analog To Digital Converters (ADC) Procurement Notes

Verify the 'T' suffix indicates tape-and-reel packaging when sourcing components. Confirm the 'SN' package designation corresponds to the SOIC-8 footprint. Ensure the operating environment remains within the specified -40°C to +125°C temperature range to maintain guaranteed performance parameters.

Analog To Digital Converters (ADC) Selection Notes

Select the MCP3550T-60E/SN specifically for applications requiring high attenuation of 60 Hz power line interference. This model is suitable for multiplexed systems due to its single-command conversion capability without digital filter settling time. Consider the MCP3550-50 variant if 50 Hz rejection is required instead.

Analog To Digital Converters (ADC) Part Context

This component belongs to the MCP3550/1/3 family of low-power, high-resolution ADCs. The MCP3550 series is distinguished by its specific digital filter notch frequencies designed for mains power line rejection (50 Hz or 60 Hz). It complements the MCP3551 (dual notch) and MCP3553 (higher speed) variants within the same product line.

Analog To Digital Converters (ADC) Replacement Considerations

The MCP3550-50E/SN serves as a functional substitute for environments requiring 50 Hz line frequency rejection rather than 60 Hz. Other members of the MCP3551 or MCP3553 families offer different trade-offs between data rate and noise performance but share similar pinouts and interfaces.