MCP3021A3T-E/OTVAO

Analog To Digital Converters (ADC) Overview

The MCP3021A3T-E/OTVAO is a single-channel, 10-bit successive approximation register (SAR) analog-to-digital converter (ADC) manufactured by Microchip Technology. It features an I2C-compatible serial interface supporting Standard mode (100 kHz) and Fast mode (400 kHz), enabling sample rates up to 22.3 ksps. The device operates on a single supply voltage ranging from 2.7 V to 5.5 V with a maximum conversion current of 250 µA and typical standby current of 5 nA. It provides ±1 LSB maximum DNL and INL, housed in a compact SOT-23-5 package suitable for space-constrained applications.

Analog To Digital Converters (ADC) Feature Summary

• 10-bit SAR ADC architecture with single-ended analog input
• I2C compatible interface with 100 kHz and 400 kHz clock speeds
• Low power consumption: 250 µA max conversion current, 5 nA typical standby
• Extended temperature range operation from -40°C to +125°C

Analog To Digital Converters (ADC) Applications

• Data logging systems
• Multi-zone environmental monitoring
• Handheld portable instruments
• Battery-powered test equipment
• Remote or isolated data acquisition

Analog To Digital Converters (ADC) Procurement Notes

Verify the specific ordering suffix 'VAO' against official Microchip documentation to confirm any variations in tape-and-reel specifications or automotive qualification status compared to standard variants. Ensure compatibility with existing PCB footprints for the SOT-23-5 package during procurement planning.

Analog To Digital Converters (ADC) Selection Notes

Select this component when a low-pin-count, single-channel ADC with I2C connectivity is required. The 10-bit resolution and ±1 LSB linearity are suitable for general-purpose sensing. Consider the 22.3 ksps maximum sampling rate at 400 kHz I2C speed against system bandwidth requirements.

Analog To Digital Converters (ADC) Part Context

This part belongs to the MCP3021 family of low-power, 10-bit ADCs. The 'E' designation indicates the extended industrial temperature range (-40°C to +125°C). The 'T' denotes tape-and-reel packaging, and 'OT' specifies the SOT-23-5 package type. The 'VAO' suffix typically relates to specific manufacturing or packaging lot codes defined by the manufacturer.

Analog To Digital Converters (ADC) Replacement Considerations

Direct pin-for-pin replacements within the same family include MCP3021A0T-E/OT and MCP3021A1T-E/OT, which differ primarily in default I2C address bits. Verify that the replacement part's address configuration matches the system bus requirements.