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                                                                                                  1. Home
                                                                                                  2. Semiconductors - ICs
                                                                                                  3. Data & Signal Conversion
                                                                                                  4. Analog-to-Digital Converters - ADC
                                                                                                  Print Page

                                                                                                  MCP3421A0T-E/CH

                                                                                                  Analog to Digital Converter, 18 bit, 3.75 SPS, Differential, Single Ended, I2C, Single, 2.7 V

                                                                                                  Date/Lot Code

                                                                                                  MICROCHIP MCP3421A0T-E/CH
                                                                                                  Image is for illustrative purposes only. Please refer to product description.
                                                                                                  ManufacturerMICROCHIP
                                                                                                  Manufacturer Part NoMCP3421A0T-E/CH
                                                                                                  Newark Part No.77M2561
                                                                                                  Product RangeSingle 8-Bit Sigma-Delta ADCs
                                                                                                  Technical Datasheet

                                                                                                  Data Sheet

                                                                                                  See all Technical Docs
                                                                                                  351 In Stock

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                                                                                                  QuantityPrice
                                                                                                  1+$3.300
                                                                                                  25+$2.750
                                                                                                  Price for:Each (Supplied on Cut Tape)
                                                                                                  Minimum: 1
                                                                                                  Multiple: 1
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                                                                                                  Product Information

                                                                                                  ManufacturerMICROCHIP
                                                                                                  Manufacturer Part NoMCP3421A0T-E/CH
                                                                                                  Newark Part No.77M2561
                                                                                                  Product RangeSingle 8-Bit Sigma-Delta ADCs
                                                                                                  Technical Datasheet

                                                                                                  Data Sheet

                                                                                                  Resolution (Bits)18bit
                                                                                                  Sampling Rate3.75SPS
                                                                                                  Input Channel TypeDifferential, Single Ended
                                                                                                  Data InterfaceI2C
                                                                                                  Supply Voltage TypeSingle
                                                                                                  Supply Voltage Min2.7V
                                                                                                  Supply Voltage Max5.5V
                                                                                                  ADC / DAC Case StyleSOT-23
                                                                                                  No. of Pins6Pins
                                                                                                  Operating Temperature Min-40°C
                                                                                                  Operating Temperature Max125°C
                                                                                                  Product RangeSingle 8-Bit Sigma-Delta ADCs
                                                                                                  Automotive Qualification Standard-
                                                                                                  MSLMSL 1 - Unlimited
                                                                                                  SVHCNo SVHC (25-Jun-2025)

                                                                                                  Product Overview

                                                                                                  MCP3421A0T-E/CH is a single channel low-noise, high accuracy ΔΣ A/D converter with differential inputs and up to 18 bits of resolution. The onboard precision 2.048V reference voltage enables an input range of ±2.048V differentially (Δ voltage = 4.096V). This device has an on-board programmable gain amplifier (PGA). The user can select the PGA gain of x1, x2, x4, or x8 before the analog-to-digital conversion takes place. This allows the MCP3421 device to convert a smaller input signal with high resolution. The device has two conversion modes: (a) continuous mode and (b) one-shot mode. In one-shot mode, the device enters a low current standby mode automatically after one conversion. This reduces current consumption greatly during idle periods. Application includes portable instrumentation, weigh scales and fuel gauges, temperature sensing with RTD, thermistor, and thermocouple, and bridge sensing for pressure, strain, and force.

                                                                                                  • 18bit ΔΣ ADC, differential input operation
                                                                                                  • Self calibration of internal offset and gain per each conversion, on-board oscillator
                                                                                                  • Output noise is 1.5µVRMS typ at (TA = +25°C, DR = 3.75 SPS, PGA = 1, VIN = 0)
                                                                                                  • Integral nonlinearity is 10ppm of FSR at (DR = 3.75 SPS)
                                                                                                  • Gain error is 0.05% typical at (PGA = 1, DR = 3.75SPS)
                                                                                                  • Offset error is 15µV typ at (tested at PGA = 1, VDD = 5.0V and DR = 3.75 SPS)
                                                                                                  • Power supply rejection at DC is 100dB typ at (TA = +25°C, VDD = 2.7V to 5.5V, PGA = 1)
                                                                                                  • Supply current during conversion is 155µA typ at (VDD = 5.0V)
                                                                                                  • Input leakage current is 1µA maximum at (VIH = 5.5V, TA = -40°C to +85°C)
                                                                                                  • Operating temperature range from -40°C to +125°C, 6-lead SOT-23 package

                                                                                                  Warnings

                                                                                                  ESD sensitive device, take proper precaution while handling the device. Market demand for this product has caused an extension in leadtimes. Delivery dates may fluctuate. Product exempt from discounts.

                                                                                                  Technical Specifications

                                                                                                  Resolution (Bits)

                                                                                                  18bit

                                                                                                  Input Channel Type

                                                                                                  Differential, Single Ended

                                                                                                  Supply Voltage Type

                                                                                                  Single

                                                                                                  Supply Voltage Max

                                                                                                  5.5V

                                                                                                  No. of Pins

                                                                                                  6Pins

                                                                                                  Operating Temperature Max

                                                                                                  125°C

                                                                                                  Automotive Qualification Standard

                                                                                                  -

                                                                                                  SVHC

                                                                                                  No SVHC (25-Jun-2025)

                                                                                                  Sampling Rate

                                                                                                  3.75SPS

                                                                                                  Data Interface

                                                                                                  I2C

                                                                                                  Supply Voltage Min

                                                                                                  2.7V

                                                                                                  ADC / DAC Case Style

                                                                                                  SOT-23

                                                                                                  Operating Temperature Min

                                                                                                  -40°C

                                                                                                  Product Range

                                                                                                  Single 8-Bit Sigma-Delta ADCs

                                                                                                  MSL

                                                                                                  MSL 1 - Unlimited

                                                                                                  Technical Docs (3)

                                                                                                  Product Change Notice EN

                                                                                                  CAD CadSoft_EAGLE EN

                                                                                                  Technical Data Sheet EN

                                                                                                  Associated Products

                                                                                                  4 Products Found

                                                                                                  Legislation and Environmental

                                                                                                  US ECCN:EAR99
                                                                                                  EU ECCN:Unknown
                                                                                                  RoHS Compliant:Yes

                                                                                                  RoHS

                                                                                                  RoHS Phthalates Compliant:Yes

                                                                                                  RoHS

                                                                                                  SVHC:No SVHC (25-Jun-2025)
                                                                                                  Download Product Compliance Certificate

                                                                                                  Product Compliance Certificate

                                                                                                  Product traceability

                                                                                                  Date/Lot Code

                                                                                                  Customer Service
                                                                                                  I Need Help
                                                                                                  Sales 01.800.463.9275
                                                                                                  Technical 01.800.463.9275
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