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MCP3426A1-E

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Microchip Tech Analog To Digital Converters (ADCs), SOIC-8. Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.

componentadc-dac-data conversionmcp3426a1-efactory-2.0.0extractor-text

Verified MCP3426A1-E

by Ray · last 31 Oct 2026 · 1 record · files match
SymbolFootprint3D modelPins

Verification log 1 record

31 Oct 2026RayPublished by the parts factory: tier mfr, 8 pinsfiles match
SymbolFootprint3D modelPinsfor all variants
  • ✓component-page-verify: PASS
  • ✓cad_props: Datasheet, MPN and distributor properties match page.json
  • ✓component: MCP3426A1-E · SOIC-8 · 8 pins
  • ✓copper: 8 copper pads, none touching another net
  • ✓datasheet: all 8 pin names found in the 56-page datasheet
  • •distributor (warn): no ['digikey', 'mouser'] number
  • ✓family: SOIC-8_3.9x4.9mm_P1.27mm
  • ✓files: 7 declared files present
  • ✓hero: docs/hero.png 4000x2500
  • ✓lbr: OK: /tmp/cpv-9oet2wou/x.lbr is a valid EAGLE .lbr with complete deviceset
  • ✓license: CC-BY-SA-4.0
  • ✓models_3d: 2 records
  • •package_fit (skip): no component.package_dims on the page: the model is unchecked against the datasheet drawing
  • ✓pads: 8 pins = 8 pads
  • ✓pose: 2 STEP(s) Z-up, seated, centred
  • ✓symbol: 8 pins agree
  • ✓visibility: public, source open
Evidencedatasheet
Verified files✓ mcp3426a1-e.kicad_sym✓ mcp3426a1-e.kicad_mod✓ mcp3426a1-e.step
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Generated by kicad-footprint-generator · KiCad file format 20260206
Name Last commit message Last updated
docs Publish 0.1.0 · Ray 6d ago
viewers mcp3426a1-e: viewers · Ray 6d ago
mcp3426a1-e-etched.glb Publish 0.1.0 · Ray 6d ago
mcp3426a1-e-etched.step mcp3426a1-e: factory component page (tier=mfr) · Ray 6d ago
mcp3426a1-e-hero.glb mcp3426a1-e: hero GLB from the etched model (keeps the MPN mark) · Ray 6d ago
mcp3426a1-e-hero.overlay.json Publish 0.1.0 · Ray 6d ago
mcp3426a1-e.glb Publish 0.1.0 · Ray 6d ago
mcp3426a1-e.kicad_mod Publish 0.1.0 · Ray 6d ago
mcp3426a1-e.kicad_sym Publish 0.1.0 · Ray 6d ago
mcp3426a1-e.lbr Publish 0.1.0 · Ray 6d ago
mcp3426a1-e.step Publish 0.1.0 · Ray 6d ago
package.json Publish 0.1.0 · Ray 6d ago
page.json Set visibility: public · Ray 6d ago
README.md Publish 0.1.0 · Ray 6d ago
verification.json Verified: Published by the parts factory: tier mfr, 8 pins · Ray 6d ago

MCP3426A1-E

Microchip Tech · Analog To Digital Converters (ADCs) · SOIC-8

MCP3426A1-E from Microchip Tech, in a SOIC-8. Pinout and pin descriptions extracted from the manufacturer datasheet (extract_pins, cross-checked by a second model); symbol, footprint, and 3D from KiCad-official CAD.

Pinout

Pin Name Type Function
1 CH1+ input Positive differential analog input of channel 1, with a usable range of VSS-0.3V to VDD+0.3V.
2 CH1- input Negative differential analog input of channel 1, which can be tied to VSS for single-ended operation, with a range of VSS-0.3V to VDD+0.3V.
3 VDD power_in Positive supply pin, specified for 2.7V to 5.5V, with a bypass of about 0.1 µF ceramic to ground plus a recommended 10 µF tantalum in parallel.
4 SDA bidirectional Bidirectional open-drain serial data pin of the I2C interface that needs a pull-up resistor to VDD (5 kΩ to 10 kΩ for standard and fast modes, under 1 kΩ for high-speed mode).
5 SCL input Serial clock pin of the I2C interface (slave only, open-drain N-channel) that needs a pull-up resistor to VDD.
6 VSS power_in Ground pin and current return path, to be connected to a ground plane (preferably analog ground) through a low-impedance connection.
7 CH2+ input Positive differential analog input of channel 2, with a usable range of VSS-0.3V to VDD+0.3V.
8 CH2- input Negative differential analog input of channel 2, which can be tied to VSS for single-ended operation, with a range of VSS-0.3V to VDD+0.3V.

Key specifications

Parameter Value
Manufacturer Microchip Tech
Package SOIC-8
Category ADC/DAC/Data Conversion
Pins 8

Electrical characteristics

Limits as printed in the datasheet (page.json metadata.characteristics carries them as data).

Parameter Symbol Min Typ Max Unit Conditions Page
Supply Voltage Absolute Maximum VDD 7 V 5
All inputs and outputs voltage -0.4 0.4 V VSS -0.4V to VDD+0.4V (relative to VSS/VDD) 5
Current at Input Pins -2 2 mA 5
Current at Output and Supply Pins -10 10 mA 5
Storage Temperature -65 150 °C 5
Ambient Temp. with power applied -55 125 °C 5
Maximum Junction Temperature TJ 150 °C 5
Maximum Input Voltage Range -0.3 0.3 V VSS-0.3 to VDD+0.3 (Note 1) 5
Resolution and No Missing Codes 12 Bits DR = 240 SPS 5
Resolution and No Missing Codes 14 Bits DR = 60 SPS 5
Resolution and No Missing Codes 16 Bits DR = 15 SPS 5
Data Rate DR 176 240 328 SPS 12 bits mode 5
Data Rate DR 44 60 82 SPS 14 bits mode 5
Data Rate DR 11 15 20.5 SPS 16 bits mode 5
Supply Voltage Range VDD 2.7 5.5 V 6
Supply Current during Conversion IDDA 145 180 µA VDD = 5.0V 6
Supply Current during Conversion IDDA 135 µA VDD = 3.0V 6
Supply Current during Standby Mode IDDS 0.3 1 µA VDD = 5.0V 6
High level input voltage VIH 0.7 1 V at SDA and SCL pins; 0.7VDD to VDD (multiples of VDD) 6
Low level input voltage VIL 0.3 V at SDA and SCL pins; 0.3VDD 6
Low level output voltage VOL 0.4 V IOL = 3 mA 6
Hysteresis of Schmidt Trigger for inputs VHYST 0.05 V 0.05VDD; fSCL = 100 kHz 6
Supply Current when I2C bus line is active IDDB 10 µA Device is in standby mode while I2C bus is active 6
Input Leakage Current IILH 1 µA VIH = 5.5V 6
Input Leakage Current IILL -1 µA VIL = GND 6
Pin capacitance CPIN 4 10 pF 6
I2C Bus Capacitance Cb 400 pF 6
Specified Temperature Range TA -40 85 °C 7
Operating Temperature Range TA -40 125 °C 7
Thermal Resistance, 8L-SOIC θJA 149.5 °C/W 7
Differential Input Impedance ZIND 2.25 MΩ 2.25/PGA; during normal mode operation 5
Common Mode input Impedance ZINC 25 MΩ PGA = 1, 2, 4, 8 5
Output Noise 2.5 µVRMS TA = +25°C, DR =15 SPS, PGA = 1, VIN+ = VIN- = GND 5
Integral Non-Linearity INL 10 ppm of FSR DR = 15 SPS 5
Internal Reference Voltage VREF 2.048 V 5
Gain Error 0.1 % PGA = 1, DR = 15 SPS 5
PGA Gain Error Match 0.1 % Between any 2 PGA settings 5
Gain Error Drift 15 ppm/°C PGA=1, DR=15 SPS 5
Offset Error VOS 30 µV PGA = 1, DR = 15 SPS 6
Offset Drift vs. Temperature 50 nV/°C 6
Gain vs. VDD 5 ppm/V TA = +25°C, VDD = 2.7V to 5.5V, PGA = 1 6
Power Supply Rejection at DC Input 100 dB TA = +25°C, VDD = 2.7V to 5.5V, PGA = 1 6
Addr_Low Addr_Low 0 0.2 V VSS to 0.2VDD; device reads logic low (MCP3427/8 only) 6

Materials and finish

As the datasheet states them (page.json metadata.appearance; the 3D model's colours follow it).

Part Material Colour / plating Datasheet says Page
contacts tin MS = Plastic Micro Small Outline (MSOP), 8-lead SN = Plastic Small Outline SOIC, 8-lead 53

CAD (KiCad official)

  • Symbol: MCP3426A1-E
  • Footprint: Package_SO:SOIC-8_3.9x4.9mm_P1.27mm
  • 3D model: SOIC-8 (KiCad packages3D, STEP)
  • 3D model files: mcp3426a1-e-etched.step / mcp3426a1-e-etched.glb carry the MPN laser-etched on the die in a toggleable Adom.LaserEtch group (Fusion-ready); mcp3426a1-e.step / mcp3426a1-e.glb are the bare package body.

Provenance

Data extracted from the manufacturer datasheet, not a distributor listing:

  • Datasheet: Microchip Tech datasheet (56 pp, sha256 3d9cc322b8fd7415, retrieved 2026-10-31, tier: manufacturer)
  • Extractor: parts-factory 2.0.0 / extract_pins 0.3, primary claude-sonnet-5-5 (text), consensus claude-sonnet-5-5 (agreed), guards: pin_guards 0.1: passed. Pins are checked against the footprint pad set and their cited datasheet pages before publish.
  • CAD: KiCad official libraries (CC-BY-SA 4.0).

Datasheet PDF