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MCP4022T-202E

Microchip Tech · Digital Potentiometers · SOT-23-6

MCP4022T-202E from Microchip Tech, in a SOT-23-6. 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 Positive power supply input, relative to VSS, ranging from 2.7V to 5.5V, with a decoupling capacitor to VSS recommended.
2 VSS power_in Device ground reference.
3 U/D input TTL-compatible increment/decrement input; an increment moves the wiper one step toward terminal A and a decrement moves it one step toward terminal B.
4 CS input TTL-compatible chip select input with internal pull-up; VIL enables serial commands and VIHH enables high-voltage commands that save the wiper to EEPROM and enable or disable WiperLock.
5 W passive Potentiometer wiper terminal, the adjustable terminal, with no polarity relative to A or B, supporting positive and negative current, and its voltage must be between VSS and VDD.
6 A passive Potentiometer terminal A, the fixed connection to the 0x3F end of the potentiometer, with no polarity, supporting positive and negative current, and its voltage must be between VSS and VDD.

Key specifications

Parameter Value
Manufacturer Microchip Tech
Package SOT-23-6
Category ADC/DAC/Data Conversion
Pins 6

Electrical characteristics

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

Parameter Symbol Min Typ Max Unit Conditions Page
Operating Voltage Range VDD 2.7 5.5 V 2
CS Input Voltage VCS 12.5 V min VSS; CS pin at one of three input levels (VIL, VIH or VIHH) 2
Supply Current, serial interface inactive IDD 0.3 1 µA Serial Interface Inactive (CS = VIH, U/D = VIH) 2
Supply Current, EE write cycle IDD 0.6 3 mA EE Write cycle, TA = +25°C 2
Supply Current at 5.5V IDD 45 µA 5.5V, CS = VSS, fU/D = 1 MHz 2
Supply Current at 2.7V IDD 15 µA 2.7V, CS = VSS, fU/D = 1 MHz 2
Resistance (±20%), -202 device RAB 1.68 2.1 2.52 kΩ -202 devices (Note 1) 2
Resolution N 64 Taps No Missing Codes 2
Wiper Resistance RW 70 125 Ω 5.5V 3
Wiper Resistance RW 70 325 Ω 2.7V 3
Resistor Terminal Input Voltage Range VA,VW,VB 0 V Vss to VDD; Note 5, Note 6 3
Maximum current through A, W or B IW 2.5 mA Note 6 3
Rheostat INL, -202, 5.5V R-INL -0.5 0.25 0.5 LSb -202 devices (2.1 k), 5.5V 4
Rheostat INL, -202, 2.7V R-INL -8.5 4.5 8.5 LSb -202 devices (2.1 k), 2.7V (Note 7) 4
Rheostat DNL, -202, 5.5V R-DNL -0.5 0.25 0.5 LSb -202 devices (2.1 k), 5.5V 4
Rheostat DNL, -202, 2.7V R-DNL -1 0.5 2 LSb -202 devices (2.1 k), 2.7V (Note 7) 4
Input High Voltage VIH 0.7 V 0.7 VDD (min, as multiple of VDD) 5
Input Low Voltage VIL 0.3 V 0.3 VDD (max, as multiple of VDD) 5
High-Voltage Input Entry Voltage VIHH 9 12.5 V -40°C to +125°C 5
High-Voltage Input Entry Voltage VIHH 8.5 12.5 V +7°C to +125°C 5
High-Voltage Input Exit Voltage VIHH 0.8 V max is VDD+0.8 V 5
Input Leakage Current IIL -1 1 µA VIN = VDD 5
Power Supply Sensitivity PSS 0.0015 0.0035 %/% MCP4021/4023 only; not applicable to MCP4022 5
CS Low Time tCSLO 5 µs 6
CS High Time tCSHI 500 ns 6
U/D to CS Hold Time tLUC 500 ns 6
CS to U/D Low Setup Time tLCUF 500 ns 6
CS to U/D High Setup Time tLCUR 3 µs 6
U/D High Time tHI 500 ns 6
U/D Low Time tLO 500 ns 6
Up/Down Toggle Frequency fUD 1 MHz 6
Wiper Settling Time, 2.1 k tS 0.5 µs 2.1 k CL = 100 pF 6
HV U/D to CS Hold Time tHUC 1.5 µs 8
HV CS to U/D Low Setup Time tHCUF 8 µs 8
HV CS to U/D High Setup Time tHCUR 4.5 µs 8
Internal EEPROM Write Time twc 5 ms @25°C 6
Internal EEPROM Write Time twc 10 ms -40°C to +125°C 6
Nominal Resistance Tempco ΔR/ΔT 50 ppm/°C TA = -20°C to +70°C 3
Nominal Resistance Tempco ΔR/ΔT 100 ppm/°C TA = -40°C to +85°C 3
Nominal Resistance Tempco ΔR/ΔT 150 ppm/°C TA = -40°C to +125°C 3
Bandwidth -3 dB, -202 BW 4 MHz -202 devices, Code = 1F, output load = 30 pF 3
Capacitance (PA) CAW 75 pF f =1 MHz, code = 1Fh 3
Capacitance (PW) CW 120 pF f =1 MHz, code = 1Fh 3
Capacitance (PB) CBW 75 pF f =1 MHz, code = 1Fh 3
Supply Voltage VDD 6.5 V 2
CS and U/D inputs w.r.t VSS -0.3 12.5 V 2
A, B and W terminals w.r.t VSS -0.3 6 V -0.3V to VDD + 0.3V (printed as VDD + 0.3V) 2
Current at Input Pins -10 10 mA ±10 mA 2
Current at Supply Pins -10 10 mA ±10 mA 2
Current at Potentiometer Pins -2.5 2.5 mA ±2.5 mA 2
Storage temperature -65 150 °C 2
Ambient temp. with power applied -55 125 °C 2
Maximum Junction Temperature TJ 150 °C 2
ESD protection on all pins (HBM) 4 kV HBM; 400V MM 2
Operating Temperature Range TA -40 125 °C 10
Thermal Resistance, 6L-SOT-23 θJA 230 °C/W 10

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 8-Lead Plastic Small Outline (SN) - Narrow, 3.90 mm (.150 In.) Body [SOIC] A A2 65

CAD (KiCad official)

  • Symbol: MCP4022T-202E
  • Footprint: Package_TO_SOT_SMD:SOT-23-6
  • 3D model: SOT-23-6 (KiCad packages3D, STEP)
  • 3D model files: mcp4022t-202e-etched.step / mcp4022t-202e-etched.glb carry the MPN laser-etched on the die in a toggleable Adom.LaserEtch group (Fusion-ready); mcp4022t-202e.step / mcp4022t-202e.glb are the bare package body.

Provenance

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

  • Datasheet: Microchip Tech datasheet (74 pp, sha256 6d9ee87ab7f5b4fc, retrieved 2026-10-30, 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