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MCP3221A4T-E

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Microchip Tech Analog To Digital Converters (ADCs), SOT-23-5. Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.

componentadc-dac-data conversionmcp3221a4t-efactory-2.0.0extractor-text

Verified MCP3221A4T-E

by Ray · last 7 Nov 2026 · 1 record · files match
SymbolFootprint3D modelPins

Verification log 1 record

7 Nov 2026RayPublished by the parts factory: tier mfr, 5 pinsfiles match
SymbolFootprint3D modelPinsfor all variants
  • ✓component-page-verify: PASS
  • ✓cad_props: Datasheet, MPN and distributor properties match page.json
  • ✓component: MCP3221A4T-E · SOT-23-5 · 5 pins
  • ✓copper: 5 copper pads, none touching another net
  • ✓datasheet: all 5 pin names found in the 30-page datasheet
  • •distributor (warn): no ['digikey', 'mouser'] number
  • ✓family: SOT-23-5
  • ✓files: 7 declared files present
  • ✓hero: docs/hero.png 4000x2500
  • ✓lbr: OK: /tmp/cpv-tq7yl1bg/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: 5 pins = 5 pads
  • ✓pose: 2 STEP(s) Z-up, seated, centred
  • ✓symbol: 5 pins agree
  • ✓symbol_text: no pin names collide
  • ✓visibility: public, source open
Evidencedatasheet
Verified files✓ mcp3221a4t-e.kicad_sym✓ mcp3221a4t-e.kicad_mod✓ mcp3221a4t-e.step
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Ray Publish 0.1.0 f11a926 15h ago

MCP3221A4T-E

Microchip Tech · Analog To Digital Converters (ADCs) · SOT-23-5

MCP3221A4T-E from Microchip Tech, in a SOT-23-5. 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 VDD power_in Power supply input of +2.7V to 5.5V that also serves as the voltage reference for the conversion, bypassed with 0.1 µF placed close to the pin.
2 VSS power_in Ground reference for the device.
3 AIN input Single-ended analog input to the sample and hold circuit, which must be kept between VSS and VDD for proper conversion.
4 SDA bidirectional Open-drain I2C serial data line for addresses and data in and out, needing a pull-up to VDD (typically 10 kΩ for 100 kHz and 2 kΩ for 400 kHz).
5 SCL input Open-drain I2C serial clock input that synchronizes data transfer on SDA, needing a pull-up to VDD (typically 10 kΩ for 100 kHz and 2 kΩ for 400 kHz).

Key specifications

Parameter Value
Manufacturer Microchip Tech
Package SOT-23-5
Category ADC/DAC/Data Conversion
Pins 5

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 Operating Voltage VDD 2.7 5.5 V 4
Operating Temperature Range TA -40 125 °C 4
Extended Temperature Range TA -40 125 °C 4
Supply Voltage VDD 7 V 3
Analog input pin voltage -0.6 V w.r.t. VSS; upper limit VDD +0.6V 3
SDA and SCL pins voltage -0.6 V w.r.t. VSS; upper limit VDD +1.0V 3
Storage Temperature -65 150 °C 3
Ambient Temperature with power applied -65 125 °C 3
Maximum Junction Temperature 150 °C 3
ESD protection on all pins (HBM) 4 kV 3
Integral Nonlinearity INL 0.75 2 LSB 3
Differential Nonlinearity DNL 0.5 1 LSB No missing codes 3
Offset Error 0.75 2 LSB 3
Gain Error -1 3 LSB 3
Analog Input Leakage Current -1 1 µA 3
Low-Level Output Voltage VOL 0.4 V IOL = 3 mA, RPU = 1.53 k 3
Input Leakage Current ILI -1 1 µA VIN = 0.1 VDD and 0.9 VDD 3
Output Leakage Current ILO -1 1 µA VOUT = 0.1 VSS and 0.9 VDD 3
Pin Capacitance (all inputs/outputs) CIN, COUT 10 pF TA = 25°C, f = 1 MHz; (Note 2) 4
Bus Capacitance CB 400 pF SDA drive low, 0.4V 4
Conversion Current IDD 175 250 µA 4
Standby Current IDDS 0.005 1 µA SDA, SCL = VDD 4
Active Bus Current IDDA 120 µA Note 4 4
Sample Rate fSAMP 22.3 ksps fSCL = 400 kHz (Note 1) 4
Clock Frequency (Standard Mode) fSCL 0 100 kHz 5
Clock High Time (Standard Mode) THIGH 4000 ns 5
Clock Low Time (Standard Mode) TLOW 4700 ns 5
SDA and SCL Rise Time (Standard Mode) TR 1000 ns From VIL to VIH (Note 1) 5
SDA and SCL Fall Time (Standard Mode) TF 300 ns From VIL to VIH (Note 1) 5
Start Condition Hold Time (Standard Mode) THD:STA 4000 ns 5
Start Condition Setup Time (Standard Mode) TSU:STA 4700 ns 5
Data Input Setup Time (Standard Mode) TSU:DAT 250 ns 5
Stop Condition Setup Time (Standard Mode) TSU:STO 4000 ns 5
Stop Condition Hold Time (Standard Mode) THD:STD 4000 ns 5
Output Valid from Clock (Standard Mode) TAA 3500 ns 5
Bus Free Time (Standard Mode) TBUF 4700 ns Note 2 5
Input Filter Spike Suppression (Standard Mode) TSP 50 ns SDA and SCL pins (Note 1) 5
Clock Frequency (Fast Mode) FSCL 0 400 kHz 5
Clock High Time (Fast Mode) THIGH 600 ns 5
Clock Low Time (Fast Mode) TLOW 1300 ns 5
SDA and SCL Rise Time (Fast Mode) TR 300 ns From VIL to VIH (Note 1) 5
SDA and SCL Fall Time (Fast Mode) TF 300 ns From VIL to VIH (Note 1) 5
Start Condition Hold Time (Fast Mode) THD:STA 600 ns 5
Start Condition Setup Time (Fast Mode) TSU:STA 600 ns 5
Data Input Hold Time (Fast Mode) THD:DAT 0 0.9 ms 5
Data Input Setup Time (Fast Mode) TSU:DAT 100 ns 5
Stop Condition Setup Time (Fast Mode) TSU:STO 600 ns 5
Stop Condition Hold Time (Fast Mode) THD:STD 600 ns 5
Output Valid from Clock (Fast Mode) TAA 900 ns 5
Bus Free Time (Fast Mode) TBUF 1300 ns Note 2 5
Input Filter Spike Suppression (Fast Mode) TSP 50 ns SDA and SCL pins (Note 1) 5
Thermal Resistance, SOT-23 JA 256 °C/W 4

CAD (KiCad official)

  • Symbol: MCP3221A4T-E
  • Footprint: Package_TO_SOT_SMD:SOT-23-5
  • 3D model: SOT-23-5 (KiCad packages3D, STEP)
  • 3D model files: mcp3221a4t-e-etched.step / mcp3221a4t-e-etched.glb carry the MPN laser-etched on the die in a toggleable Adom.LaserEtch group (Fusion-ready); mcp3221a4t-e.step / mcp3221a4t-e.glb are the bare package body.

Provenance

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

  • Datasheet: Microchip Tech datasheet (30 pp, sha256 6e11b59a236328b7, retrieved 2026-11-07, 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