MCP3421A0T-E/CH Data & Signal Conversion by Microchip Technology

18-Bit, 240SPS, Single Channel ADC

Status: Active
Series: MCP3421
RoHS: Compliant
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The MCP3421 ADC can be used for various high accuracy analog-to-digital data conversion applications where ease of use, low power consumption and small footprint are major considerations.The MCP3421 is a single channel low-noise, high accuracy delta-sigma A/D converter with differential inputs and up to 18 bits of resolution in a small SOT-23-6 package. Please consider the MCP3425 version for resolutions up to 16 bits. The on-board precision 2.048V reference voltage enables a differential input range of ±2.048V. The device uses a two-wire I2C™ compatible interface and operates from a single power supply ranging from 2.7V to 5.5V. The MCP3421 ADC performs conversions at rates of 3.75, 15, 60 or 240 samples per second with corresponding resolutions of 18, 16, 14 and 12 bits. The onboard programmable gain amplifier (PGA) provides gain up to 8x. The device has two conversion modes: Continuous mode and One-Shot mode. In One-Shot mode, the device enters a low current standby mode automatically after a conversion, greatly reducing power use.

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18-bit resolution
Small 6-lead SOT-23 packaging
Differential input operation
On-board voltage reference with 5 ppm/°C drift
On-board PGA, gains of 1, 2, 4, 8
3.75 SPS (18 bits)
15 SPS (16 bits)
60 SPS (14 bits)
240 SPS (12 bits)
INL 10 ppm of FSR max
Low current consumption, 145 µA at 3V
One-shot or continuous conversion options
Supports I2C™ serial interface
Extended temperature range: -40°C to +125°C


Input Channels 1
Resolution 18
Pins | Packaging 6 | SOT-23
Temp Range -40C to +125C
Packing Media Tape and reel (3000)

Environmental Information

JEDEC Indicator e3
ROHS Compliant
China EFUP Compliant
Device Weight (g) 0.017
Shipping Weight (kg) 0.046667
Lead Count 6
Package Type SOT-23
Soldering Composition Matte Tin

Alternative Descriptions

Ic, Adc, 18Bit, 3.75Sps, Sot-23-6 | Newark Electronics
IC, 18BIT ADC, 4SPS, 1CH, SOT23-6 | element14
Microchip 18 bit Serial ADC Differential Input 6-Pin SOT-23 | Microchip Technology Inc. MCP3421A0T-E/CH | RS Americas
IC: A/D converter | Transfer Multisort Elektronik
1x 18-bit | Micros
A/D Converter 18-Bit 2.048V I2C SOT23-6 | RS
Single Channel I2C Interface 5.5 V 3.75 bps 18-Bit A/D Converter - SOT-23-6 | Future Electronics
ADC Single Delta-Sigma 3.75sps 18-bit I2C 6-Pin SOT-23 T/R | Avnet America
18-bit delta-sigma ADC, single channel, 4 sps | Microchip Technology
ADC Single Delta-Sigma 3.75sps 18-bit Serial 6-Pin SOT-23 T/R | EBV Elektronik

Frequently Asked Questions

Where can I find additional details, specifications and documents for a MCP3421A0T-E/CH?

Additional datasheets, footprints and schematics for MCP3421A0T-E/CH are listed on our Part Details page. You can also find images and similar parts to MCP3421A0T-E/CH on this page.

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What category does MCP3421A0T-E/CH fall under?

The MCP3421A0T-E/CH is listed under Semiconductors - ICs > Data & Signal Conversion > Analog-to-Digital Converters - ADC.

Can I view similar or alternative parts?

You can view similar parts to MCP3421A0T-E/CH when available in the Analog-to-Digital Converters - ADC range under the specifications section at the bottom of the details page.

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Is the MCP3421A0T-E/CH RoHS compliant?

Yes. This part has been flagged as RoHS Compliant by Microchip Technology.

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