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MCP4631-103E
Public Made by Adomby adom
Microchip Tech Digital Potentiometers, TSSOP-14. Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.
3D Model
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Symbol & Footprint
Schematic Symbol
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PCB Footprint
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Datasheet
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README
markdownMCP4631-103E
Microchip Tech · Digital Potentiometers · TSSOP-14
MCP4631-103E 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 | HVC/A0 | input | Address 0 input for the I2C interface, latched at POR/BOR, which also acts as the High Voltage command pin when driven to VIHH; it is a high-voltage tolerant input with Schmitt trigger. |
| 2 | SCL | input | I2C serial clock input, high-voltage tolerant with Schmitt trigger, accepting only external clock signals as the slave device. |
| 3 | SDA | bidirectional | I2C serial data input/output implemented as an open-drain N-channel driver, high-voltage tolerant with Schmitt trigger. |
| 4 | VSS | power_in | Device ground reference, to which the VDD supply is referenced. |
| 5 | P1B | passive | Potentiometer 1 Terminal B analog pin; voltage must be between VSS and VDD and it supports both positive and negative current. |
| 6 | P1W | passive | Potentiometer 1 Wiper Terminal analog pin; voltage must be between VSS and VDD and it supports both positive and negative current. |
| 7 | P1A | passive | Potentiometer 1 Terminal A analog pin; voltage must be between VSS and VDD and it supports both positive and negative current. |
| 8 | P0A | passive | Potentiometer 0 Terminal A analog pin; voltage must be between VSS and VDD and it supports both positive and negative current. |
| 9 | P0W | passive | Potentiometer 0 Wiper Terminal analog pin; voltage must be between VSS and VDD and it supports both positive and negative current. |
| 10 | P0B | passive | Potentiometer 0 Terminal B analog pin; voltage must be between VSS and VDD and it supports both positive and negative current. |
| 11 | NC | unconnected | No connection; these pins should be connected to either VDD or VSS. |
| 12 | A2 | input | I2C interface Address 2 input, high-voltage tolerant with Schmitt trigger, used with A1 and A0 to set the device address on the bus. |
| 13 | A1 | input | I2C interface Address 1 input, high-voltage tolerant with Schmitt trigger, used with A2 and A0 to set the device address on the bus. |
| 14 | VDD | power_in | Positive power supply input referenced to VSS; electrical performance may not meet data sheet specifications while VDD is below Vmin (2.7V). |
Key specifications
| Parameter | Value |
|---|---|
| Manufacturer | Microchip Tech |
| Package | TSSOP-14 |
| Category | ADC/DAC/Data Conversion |
| 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 |
|---|---|---|---|---|---|---|---|
| Supply Voltage | VDD | 2.7 | 5.5 | V | 4 | ||
| Supply Voltage (serial interface only) | VDD | 1.8 | 2.7 | V | Serial Interface only. | 4 | |
| Resistance tolerance | RAB | -20 | 20 | % | Resistance (± 20%), -103 devices | 5 | |
| Nominal resistance RAB | RAB | 8 | 10 | 12 | k | -103 devices (Note 1) | 5 |
| Wiper resistance | RW | 75 | 160 | Ω | VDD = 5.5 V, IW = 2.0 mA, code = 00h | 5 | |
| Wiper resistance | RW | 75 | 300 | Ω | VDD = 2.7 V, IW = 2.0 mA, code = 00h | 5 | |
| Nominal resistance match | /RAB0-RAB1/ /RAB | 0.2 | 1.25 | % | MCP46X1 devices only | 5 | |
| Full-Scale Error | VWFSE | -2 | -0.1 | LSb | 10 k 7-bit 3.0V VDD 5.5V | 7 | |
| Zero-Scale Error | VWZSE | 0.1 | 2 | LSb | 10 k 7-bit 3.0V VDD 5.5V | 7 | |
| Potentiometer Integral Non-linearity | INL | -0.5 | 0.25 | 0.5 | LSb | 7-bit, MCP4XX1 devices only (Note 2) | 7 |
| Potentiometer Differential Non-linearity | DNL | -0.25 | 0.125 | 0.25 | LSb | 7-bit, MCP4XX1 devices only (Note 2) | 7 |
| Maximum current through Terminal A and Terminal B | IAB | 0.688 | mA | IAB, VB = 0V, VA = 5.5V, RAB(MIN) = 8000 | 6 | ||
| Maximum current through Terminal A | IAW | 2.5 | mA | Terminal A IAW, W = Full-Scale (FS) | 6 | ||
| Maximum current through Terminal B | IBW | 2.5 | mA | Terminal B IBW, W = Zero Scale (ZS) | 6 | ||
| Maximum current through Terminal W | IAW or IBW | 2.5 | mA | Terminal W IAW or IBW, W = FS or ZS | 6 | ||
| Leakage current into A, W or B | IWL | 100 | nA | MCP4XX1 PxA = PxW = PxB = VSS | 6 | ||
| Bandwidth -3 dB | BW | 1 | MHz | 10 k 7-bit Code = 40h | 8 | ||
| Capacitance (PA) | CAW | 75 | pF | f =1 MHz, Code = Full-Scale | 10 | ||
| Capacitance (PW) | CW | 120 | pF | f =1 MHz, Code = Full-Scale | 10 | ||
| Capacitance (PB) | CBW | 75 | pF | f =1 MHz, Code = Full-Scale | 10 | ||
| Supply Current, serial interface active at 3.4 MHz | IDD | 600 | µA | Serial Interface Active, HVC/A0 = VIH (or VIL) (Note 11) Write all 0’s to Volatile Wiper 0 VDD = 5.5V, FSCL = 3.4 MHz | 4 | ||
| Supply Current, serial interface active at 100 kHz | IDD | 250 | µA | Serial Interface Active, HVC/A0 = VIH (or VIL) (Note 11) Write all 0’s to Volatile Wiper 0 VDD = 5.5V, FSCL = 100 kHz | 4 | ||
| Supply Current, serial interface inactive | IDD | 2.5 | 5 | µA | Serial Interface Inactive, (Stop condition, SCL = SDA = VIH), Wiper = 0 VDD = 5.5V, HVC/A0 = VIH | 4 | |
| VDD Start Voltage to ensure Wiper Reset | VBOR | 1.65 | V | RAM retention voltage (VRAM) < VBOR | 4 | ||
| Delay after device exits the reset state | TBORD | 10 | 20 | µs | Delay after device exits the reset state (VDD > VBOR) | 4 | |
| High Voltage Limit | VMAX | 12.5 | V | Pin can tolerate VMAX or less. | 11 | ||
| Weak Pull-up / Pull-down Current | IPU | 1.75 | mA | Internal VDD pull-up, VIHH pull-down VDD = 5.5V, VIHH = 12.5V | 12 | ||
| Output Low Voltage (SDA) | VOL | 0.4 | V | VDD 2.0V, IOL = 3 mA | 12 | ||
| Input Leakage Current | IIL | -1 | 1 | µA | VIN = VDD and VIN = VSS | 12 | |
| Pin Capacitance | CIN, COUT | 10 | pF | fC = 3.4 MHz | 12 | ||
| HVC Pull-up / Pull-down Resistance | RHVC | 16 | k | VDD = 5.5V, VHVC = 3V | 12 | ||
| Nominal Resistance Tempco | RAB/T | 50 | ppm/°C | TA = -20°C to +70°C | 5 | ||
| Nominal Resistance Tempco | RAB/T | 100 | ppm/°C | TA = -40°C to +85°C | 5 | ||
| Nominal Resistance Tempco | RAB/T | 150 | ppm/°C | TA = -40°C to +125°C | 5 | ||
| Ratiometric Tempco | VWB/T | 15 | ppm/°C | Code = Midscale (80h or 40h) | 5 | ||
| Operating Temperature Range | TA | -40 | 125 | °C | 16 | ||
| Storage Temperature Range | TA | -65 | 150 | °C | 16 | ||
| Voltage on VDD with respect to VSS | VDD | -0.6 | 7 | V | with respect to VSS | 3 | |
| Voltage on HVC/A0, A1, A2, SCL, and SDA with respect to VSS | HVC/A0, A1, A2, SCL, SDA | -0.6 | 12.5 | V | with respect to VSS | 3 | |
| Ambient temperature with power applied | TA | -40 | 125 | °C | with power applied | 3 | |
| Maximum current into VDD pin | IDD | 100 | mA | 3 | |||
| Maximum current into PXA, PXW & PXB pins | IPX | -2.5 | 2.5 | mA | 3 | ||
| Maximum Junction Temperature | TJ | 150 | °C | 3 | |||
| Package power dissipation, TSSOP-14 | PD | 1 | W | TA = +50°C, TJ = +150°C | 3 |
CAD (KiCad official)
- Symbol:
MCP4631-103E - Footprint:
Package_SO:TSSOP-14_4.4x5mm_P0.65mm - 3D model: TSSOP-14 (KiCad packages3D, STEP)
- 3D model files:
mcp4631-103e-etched.step/mcp4631-103e-etched.glbcarry the MPN laser-etched on the die in a toggleableAdom.LaserEtchgroup (Fusion-ready);mcp4631-103e.step/mcp4631-103e.glbare the bare package body.
Provenance
Data extracted from the manufacturer datasheet, not a distributor listing:
- Datasheet: Microchip Tech datasheet (102 pp, sha256
ee77464c39584a73, retrieved 2026-10-28, tier: manufacturer) - Extractor: parts-factory
2.0.0/extract_pins 0.3, primaryclaude-haiku-5-5(text), consensusclaude-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).