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MCP42100-I

Public Made by Adom

by adom

Microchip Tech Digital Potentiometers, TSSOP-14. Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.

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MCP42100-I

Microchip Tech · Digital Potentiometers · TSSOP-14

MCP42100-I from Microchip Tech, in a TSSOP-14. 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 CS input SPI chip select; a new command is executed after it has been loaded into the shift register, and the pin has a Schmitt Trigger input.
2 SCK input SPI serial clock; data is clocked into SI on the rising edge and out of SO on the falling edge, the pin is gated to CS, and it has a Schmitt Trigger input.
3 SI input SPI serial data input through which the command and data bytes are clocked into the shift register, gated to CS, with a Schmitt Trigger input.
4 VSS power_in Ground reference for the device.
5 PB1 passive Terminal B connection for potentiometer 1.
6 PW1 passive Wiper connection for potentiometer 1.
7 PA1 passive Terminal A connection for potentiometer 1.
8 PA0 passive Terminal A connection for potentiometer 0.
9 PW0 passive Wiper connection for potentiometer 0.
10 PB0 passive Terminal B connection for potentiometer 0.
11 RS input Hardware reset that sets all potentiometers to mid-scale (code 80h) when held low for at least 150 ns; it should not be toggled low while CS is low and must not be left floating.
12 SHDN input Hardware shutdown with a Schmitt Trigger input; pulling it low opens the A terminal and connects B and W for all potentiometers, it should not be toggled low while CS is low, and it must not be left floating.
13 SO output SPI serial data output for daisy-chaining devices; it is a push-pull output that does not go high-impedance when CS is high and drives logic-low while CS is high.
14 VDD power_in Positive supply, specified for single supply operation from 2.7 V to 5.5 V.

Key specifications

Parameter Value
Manufacturer Microchip Tech
Package TSSOP-14
Category Data Acquisition
Pins 14

Electrical characteristics

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

Parameter Symbol Min Typ Max Unit Conditions Page
Nominal Resistance R 70 100 130 kΩ TA = +25°C (Note 1) 4
Rheostat Differential Non-Linearity R-DNL -1 1 LSB Note 2 4
Rheostat Integral Non-Linearity R-INL -1 1 LSB Note 2 4
Wiper Resistance RW 125 175 Ω VDD = 5.5V, IW = 1 mA, code 00h 4
Wiper Resistance RW 175 250 Ω VDD = 2.7V, IW = 1 mA, code 00h 4
Wiper Current IW -1 1 mA 4
Nominal Resistance Match ∆R/R 0.2 1 % MCP42010 only, P0 to P1; TA = +25°C 4
Resolution N 8 Bits 4
Monotonicity N 8 Bits 4
Differential Non-Linearity DNL -1 1 LSB Note 3 4
Integral Non-Linearity INL -1 1 LSB Note 3 4
Full-Scale Error VWFSE -1 -0.25 0 LSB Code FFh, VDD = 5V, see Figure 2-25 4
Full-Scale Error VWFSE -1 -0.35 0 LSB Code FFh, VDD = 3V, see Figure 2-25 4
Zero-Scale Error VWZSE 0 0.25 1 LSB Code 00h, VDD = 5V, see Figure 2-25 4
Zero-Scale Error VWZSE 0 0.35 1 LSB Code 00h, VDD = 3V, see Figure 2-25 4
Voltage Range VA,B,W 0 V Note 4 4
Low-Level Output Voltage VOL 0.4 V IOL = 2.1 mA, VDD = 5V 4
Input Leakage Current ILI -1 1 µA CS = VDD, VIN = VSS or VDD, includes VA SHDN=0 4
Operating Voltage Range VDD 2.7 5.5 V 4
Supply Current, Active IDDA 340 500 µA VDD = 5.5V, CS = VSS, fSCK = 10 MHz, SO = Open, Code FFh (Note 6) 4
Supply Current, Static IDDS 0.01 1 µA CS, SHDN, RS = VDD = 5.5V, SO = Open (Note 6) 4
Power Supply Sensitivity PSS 0.0015 0.0035 %/% VDD = 4.5V - 5.5V, VA = 4.5V, Code 80h 4
Clock Frequency FCLK 10 MHz VDD = 5V (Note 1) 5
Clock High Time tHI 40 ns 5
Clock Low Time tLO 40 ns 5
CS Fall to First Rising CLK Edge tCSSR 40 ns 5
Data Input Setup Time tSU 40 ns 5
Data Input Hold Time tHD 10 ns 5
SCK Fall to SO Valid Propagation Delay tDO 80 ns CL = 30 pF (Note 2) 5
SCK Rise to CS Rise Hold Time tCHS 30 ns 5
SCK Rise to CS Fall Delay tCS0 10 ns 5
CS Rise to CLK Rise Hold tCS1 100 ns 5
CS High Time tCSH 40 ns 5
Reset Pulse Width tRS 150 ns Note 2 5
RS Rising to CS Falling Delay Time tRSCS 150 ns Note 2 5
CS rising to RS or SHDN falling delay time tSE 40 ns Note 3 5
CS low time tCSL 100 ns Note 3 5
Shutdown Pulse Width tSH 150 ns Note 3 5
Rheostat Tempco ∆RAB/∆T 800 ppm/°C 4
Voltage Divider Tempco ∆VW/∆T 1 ppm/°C Code 80h 4
Storage temperature -60 150 °C 5
Ambient temperature with power applied -60 125 °C 5
ESD protection on all pins 2 kV 5
Industrial temperature range -40 85 °C 1

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, 150 mil (SOIC) Foot Angle φ 048048 25

CAD (KiCad official)

  • Symbol: MCP42100-I
  • Footprint: Package_SO:TSSOP-14_4.4x5mm_P0.65mm
  • 3D model: TSSOP-14 (KiCad packages3D, STEP)
  • 3D model files: mcp42100-i-etched.step / mcp42100-i-etched.glb carry the MPN laser-etched on the die in a toggleable Adom.LaserEtch group (Fusion-ready); mcp42100-i.step / mcp42100-i.glb are the bare package body.

Provenance

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

  • Datasheet: Microchip Tech datasheet (32 pp, sha256 5a411a1df96a189e, retrieved 2026-10-21, tier: lcsc)
  • Extractor: parts-factory 2.0.0 / extract_pins 0.3, primary claude-haiku-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