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MCP45HV31-103E
Public Made by Adomby adom
Microchip Tech Digital Potentiometers, TSSOP-14. Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.
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MCP45HV31-103E
Microchip Tech · Digital Potentiometers · TSSOP-14
MCP45HV31-103E 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 | VL | power_in | Positive digital power supply input relative to DGND, ranging from 1.8V to 5.5V, with a decoupling capacitor to DGND recommended. |
| 2 | SCL | input | I2C serial clock input (Schmitt trigger), input-only because the device is an I2C slave. |
| 3 | A1 | input | I2C address bit 1 input (Schmitt trigger); with A0 allows up to four devices on one I2C bus. |
| 4 | SDA | bidirectional | I2C serial data input/output (Schmitt trigger) with an open-drain N-channel driver, used to read and write the Wiper and TCON registers. |
| 5 | A0 | input | I2C address bit 0 input (Schmitt trigger), latched at POR/BOR. |
| 6 | WLAT | input | Wiper latch enable input: 0 transfers the received I2C shift-register value to the Wiper register, 1 holds the received value in the shift register buffer. |
| 7 | NC | unconnected | Not internally connected to the die; connect to DGND or VL to reduce noise coupling. |
| 8 | SHDN | input | Shutdown input (Schmitt trigger) that forces the resistor network terminals into the hardware shutdown state. |
| 9 | DGND | power_in | Digital ground reference. |
| 10 | V- | power_in | Analog negative potential supply, which must be lower than or equal to the DGND potential. |
| 11 | P0B | passive | Potentiometer 0 Terminal B, the fixed connection to zero-scale wiper value (0x00), with no polarity and voltage between V+ and V-. |
| 12 | P0W | passive | Potentiometer 0 wiper terminal, with no polarity relative to A or B and voltage between V+ and V-. |
| 13 | P0A | passive | Potentiometer 0 Terminal A, the fixed connection to full-scale wiper value (0x7F for 7-bit), with no polarity and voltage between V+ and V-. |
| 14 | V+ | power_in | Analog positive supply voltage, which must be at a higher potential than V-, maximum +36V. |
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 |
|---|---|---|---|---|---|---|---|
| Resistance RAB (-103) | RAB | 8 | 10 | 12 | kΩ | -103 devices, V+/V- = 10V to 36V | 5 |
| Digital supply VL | VL | 2.7 | 5.5 | V | With respect to DGND | 4 | |
| Digital supply VL (low) | VL | 1.8 | 5.5 | V | VL ≥ V- + 2.7V | 4 | |
| Analog supply V+ | V+ | 36 | V | With respect to V- | 4 | ||
| Resistor network supply voltage | VRN | 36 | V | Delta voltage between V+ and V- | 4 | ||
| Supply current serial interface active | IDDD | 45 | 650 | µA | Serial Interface Active, VL = 5.5V, FSCL = 3.4 MHz, V- = DGND | 5 | |
| Supply current serial interface inactive | IDDD | 4 | 7 | µA | Serial Interface Inactive, VL = 5.5V, SCL = VIH, Wiper = 0, V- = DGND | 5 | |
| Analog supply current | IDDA | 5 | µA | Current V+ to V-, PxA = PxB = PxW, DGND = V- +(V+/2) | 5 | ||
| RAB current | IAB | 4.5 | mA | -103 devices, V- = -18V, V+ = +18V | 5 | ||
| Wiper resistance | RW | 75 | 170 | Ω | IW = 1 mA, V+ = +18V, V- = -18V, code = 00h | 6 | |
| Wiper resistance | RW | 145 | 200 | Ω | IW = 1 mA, V+ = +5.0V, V- = -5.0V, code = 00h | 6 | |
| Terminal current | IT, IW | 12.5 | mA | -103 devices IBW(W ≠ ZS) and IAW(W ≠ FS) | 6 | ||
| Terminal current at ZS/FS | IT, IW | 36 | mA | IBW(W = ZS), or IAW(W = FS) | 6 | ||
| Full scale error 10k 7-bit | VWFSE | -3.5 | LSb | 10 k 7-bit VAB = 10V to 36V | 7 | ||
| Zero scale error 10k 7-bit VAB 20-36V | VWZSE | 2.125 | LSb | 10 k 7-bit VAB = 20V to 36V | 8 | ||
| Zero scale error 10k 7-bit VAB 10-36V | VWZSE | 3.25 | LSb | 10 k 7-bit VAB = 10V to 36V | 8 | ||
| Potentiometer INL 10k 7-bit | P-INL | -0.5 | 0.25 | 0.5 | LSb | 10 k 7-bit VAB = 10V to 36V | 9 |
| Potentiometer DNL 10k 7-bit | P-DNL | -0.25 | 0.1 | 0.25 | LSb | 10 k 7-bit VAB = 10V to 36V | 9 |
| Rheostat INL 10k 7-bit 36V | R-INL | -0.6 | 0.6 | LSb | 10 k 7-bit IW = 3.0 mA, (V+ - V-) = 36V (Note 2) | 11 | |
| Rheostat INL 10k 7-bit 20V | R-INL | -0.8 | 0.8 | LSb | 10 k 7-bit IW = 1.7 mA, (V+ - V-) = 20V (Note 2) | 11 | |
| Rheostat INL 10k 7-bit 10V | R-INL | -1.1 | 1.1 | LSb | 10 k 7-bit IW = 830 µA, (V+ - V-) = 10V | 11 | |
| Rheostat DNL 10k 7-bit 36V | R-DNL | -0.25 | 0.25 | LSb | 10 k 7-bit IW = 3.0 mA, (V+ - V-) = 36V (Note 2) | 12 | |
| Rheostat DNL 10k 7-bit 20V | R-DNL | -0.25 | 0.25 | LSb | 10 k 7-bit IW = 1.7 mA, (V+ - V-) = 20V (Note 2) | 12 | |
| Rheostat DNL 10k 7-bit 10V | R-DNL | -0.25 | 0.25 | LSb | 10 k 7-bit IW = 830 µA, (V+ - V-) = 10V | 12 | |
| Power supply sensitivity 7-bit | PSS | 0.0015 | 0.0035 | %/% | 7-bit VL = 2.7V to 5.5V, V+ = 18V, V- = -18V, Code = 3Fh | 14 | |
| Input leakage current | IIL | -1 | 1 | uA | VIN = VL and VIN = DGND | 13 | |
| Schmitt trigger high-input threshold | VIH | 0.7 | V | 1.8V ≤ VL ≤ 5.5V; min 0.7 VL | 13 | ||
| Output low voltage SDA | VOL | 0.2 | V | VL = 5.5V, IOL = 5 mA; max 0.2 VL | 13 | ||
| Nominal resistance tempco | ΔRAB/ΔT | 50 | ppm/°C | TA = -40°C to +85°C | 6 | ||
| Nominal resistance tempco | ΔRAB/ΔT | 100 | ppm/°C | TA = -40°C to +125°C | 6 | ||
| Ratiometric tempco | ΔVBW/ΔT | 15 | ppm/°C | Code = Mid scale (3Fh) | 6 | ||
| Bandwidth -3 dB 10k 7-bit | BW | 240 | kHz | 10 k 7-bit Code = 3Fh, load = 30 pF | 10 | ||
| Settling time 10k | tS | 1 | µs | Code = 00h -> 7Fh; 7Fh -> 00h, CL = 50 pF | 16 | ||
| Power dissipation 10k | PDISS | 130 | mW | VL = 5.5V, V+ = 18V, V- = -18V | 14 | ||
| Leakage current into A, W or B | ITL | 5 | nA | A = W = B = V- | 6 | ||
| Capacitance PA | CA | 75 | pF | Measured to V-, f =1 MHz, Wiper code = Mid Scale | 13 | ||
| Capacitance PW | CW | 120 | pF | Measured to V-, f =1 MHz, Wiper code = Mid Scale | 13 | ||
| Capacitance PB | CB | 75 | pF | Measured to V-, f =1 MHz, Wiper code = Mid Scale | 13 | ||
| Operating temperature | TA | -40 | 125 | °C | 21 | ||
| Thermal resistance TSSOP-14 | θJA | 100 | °C/W | 14L-TSSOP (ST) | 21 | ||
| V+ with respect to DGND | -0.3 | 40 | V | DGND - 0.3V to 40.0V | 3 | ||
| VL with respect to DGND | -0.6 | 7 | V | 3 | |||
| Digital pins with respect to DGND | -0.6 | V | SCL, SDA, A0, A1, WLAT, SHDN: -0.6V to VL + 0.6V | 3 | |||
| Continuous current into PxA/PxW/PxB | -12.5 | 12.5 | mA | RAB = 10 kΩ | 3 | ||
| Package power dissipation TSSOP-14 | 1000 | mW | TA = +50°C, TJ = +150°C | 3 | |||
| Maximum junction temperature | TJ | 150 | °C | 3 | |||
| Storage temperature | -65 | 150 | °C | 3 | |||
| ESD HBM | 5 | kV | Human Body Model, all pins | 3 |
CAD (KiCad official)
- Symbol:
MCP45HV31-103E - Footprint:
Package_SO:TSSOP-14_4.4x5mm_P0.65mm - 3D model: TSSOP-14 (KiCad packages3D, STEP)
- 3D model files:
mcp45hv31-103e-etched.step/mcp45hv31-103e-etched.glbcarry the MPN laser-etched on the die in a toggleableAdom.LaserEtchgroup (Fusion-ready);mcp45hv31-103e.step/mcp45hv31-103e.glbare the bare package body.
Provenance
Data extracted from the manufacturer datasheet, not a distributor listing:
- Datasheet: Microchip Tech datasheet (100 pp, sha256
ab854db7c83242c1, retrieved 2026-10-31, tier: manufacturer) - Extractor: parts-factory
2.0.0/extract_pins 0.3, primaryclaude-sonnet-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).
# MCP45HV31-103E
**Microchip Tech** · Digital Potentiometers · TSSOP-14
MCP45HV31-103E 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 | VL | power_in | Positive digital power supply input relative to DGND, ranging from 1.8V to 5.5V, with a decoupling capacitor to DGND recommended. |
| 2 | SCL | input | I2C serial clock input (Schmitt trigger), input-only because the device is an I2C slave. |
| 3 | A1 | input | I2C address bit 1 input (Schmitt trigger); with A0 allows up to four devices on one I2C bus. |
| 4 | SDA | bidirectional | I2C serial data input/output (Schmitt trigger) with an open-drain N-channel driver, used to read and write the Wiper and TCON registers. |
| 5 | A0 | input | I2C address bit 0 input (Schmitt trigger), latched at POR/BOR. |
| 6 | WLAT | input | Wiper latch enable input: 0 transfers the received I2C shift-register value to the Wiper register, 1 holds the received value in the shift register buffer. |
| 7 | NC | unconnected | Not internally connected to the die; connect to DGND or VL to reduce noise coupling. |
| 8 | SHDN | input | Shutdown input (Schmitt trigger) that forces the resistor network terminals into the hardware shutdown state. |
| 9 | DGND | power_in | Digital ground reference. |
| 10 | V- | power_in | Analog negative potential supply, which must be lower than or equal to the DGND potential. |
| 11 | P0B | passive | Potentiometer 0 Terminal B, the fixed connection to zero-scale wiper value (0x00), with no polarity and voltage between V+ and V-. |
| 12 | P0W | passive | Potentiometer 0 wiper terminal, with no polarity relative to A or B and voltage between V+ and V-. |
| 13 | P0A | passive | Potentiometer 0 Terminal A, the fixed connection to full-scale wiper value (0x7F for 7-bit), with no polarity and voltage between V+ and V-. |
| 14 | V+ | power_in | Analog positive supply voltage, which must be at a higher potential than V-, maximum +36V. |
## 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 |
|---|---|---|---|---|---|---|---|
| Resistance RAB (-103) | RAB | 8 | 10 | 12 | kΩ | -103 devices, V+/V- = 10V to 36V | 5 |
| Digital supply VL | VL | 2.7 | | 5.5 | V | With respect to DGND | 4 |
| Digital supply VL (low) | VL | 1.8 | | 5.5 | V | VL ≥ V- + 2.7V | 4 |
| Analog supply V+ | V+ | | | 36 | V | With respect to V- | 4 |
| Resistor network supply voltage | VRN | | | 36 | V | Delta voltage between V+ and V- | 4 |
| Supply current serial interface active | IDDD | | 45 | 650 | µA | Serial Interface Active, VL = 5.5V, FSCL = 3.4 MHz, V- = DGND | 5 |
| Supply current serial interface inactive | IDDD | | 4 | 7 | µA | Serial Interface Inactive, VL = 5.5V, SCL = VIH, Wiper = 0, V- = DGND | 5 |
| Analog supply current | IDDA | | | 5 | µA | Current V+ to V-, PxA = PxB = PxW, DGND = V- +(V+/2) | 5 |
| RAB current | IAB | | | 4.5 | mA | -103 devices, V- = -18V, V+ = +18V | 5 |
| Wiper resistance | RW | | 75 | 170 | Ω | IW = 1 mA, V+ = +18V, V- = -18V, code = 00h | 6 |
| Wiper resistance | RW | | 145 | 200 | Ω | IW = 1 mA, V+ = +5.0V, V- = -5.0V, code = 00h | 6 |
| Terminal current | IT, IW | | | 12.5 | mA | -103 devices IBW(W ≠ ZS) and IAW(W ≠ FS) | 6 |
| Terminal current at ZS/FS | IT, IW | | | 36 | mA | IBW(W = ZS), or IAW(W = FS) | 6 |
| Full scale error 10k 7-bit | VWFSE | -3.5 | | | LSb | 10 k 7-bit VAB = 10V to 36V | 7 |
| Zero scale error 10k 7-bit VAB 20-36V | VWZSE | | | 2.125 | LSb | 10 k 7-bit VAB = 20V to 36V | 8 |
| Zero scale error 10k 7-bit VAB 10-36V | VWZSE | | | 3.25 | LSb | 10 k 7-bit VAB = 10V to 36V | 8 |
| Potentiometer INL 10k 7-bit | P-INL | -0.5 | 0.25 | 0.5 | LSb | 10 k 7-bit VAB = 10V to 36V | 9 |
| Potentiometer DNL 10k 7-bit | P-DNL | -0.25 | 0.1 | 0.25 | LSb | 10 k 7-bit VAB = 10V to 36V | 9 |
| Rheostat INL 10k 7-bit 36V | R-INL | -0.6 | | 0.6 | LSb | 10 k 7-bit IW = 3.0 mA, (V+ - V-) = 36V (Note 2) | 11 |
| Rheostat INL 10k 7-bit 20V | R-INL | -0.8 | | 0.8 | LSb | 10 k 7-bit IW = 1.7 mA, (V+ - V-) = 20V (Note 2) | 11 |
| Rheostat INL 10k 7-bit 10V | R-INL | -1.1 | | 1.1 | LSb | 10 k 7-bit IW = 830 µA, (V+ - V-) = 10V | 11 |
| Rheostat DNL 10k 7-bit 36V | R-DNL | -0.25 | | 0.25 | LSb | 10 k 7-bit IW = 3.0 mA, (V+ - V-) = 36V (Note 2) | 12 |
| Rheostat DNL 10k 7-bit 20V | R-DNL | -0.25 | | 0.25 | LSb | 10 k 7-bit IW = 1.7 mA, (V+ - V-) = 20V (Note 2) | 12 |
| Rheostat DNL 10k 7-bit 10V | R-DNL | -0.25 | | 0.25 | LSb | 10 k 7-bit IW = 830 µA, (V+ - V-) = 10V | 12 |
| Power supply sensitivity 7-bit | PSS | | 0.0015 | 0.0035 | %/% | 7-bit VL = 2.7V to 5.5V, V+ = 18V, V- = -18V, Code = 3Fh | 14 |
| Input leakage current | IIL | -1 | | 1 | uA | VIN = VL and VIN = DGND | 13 |
| Schmitt trigger high-input threshold | VIH | 0.7 | | | V | 1.8V ≤ VL ≤ 5.5V; min 0.7 VL | 13 |
| Output low voltage SDA | VOL | | | 0.2 | V | VL = 5.5V, IOL = 5 mA; max 0.2 VL | 13 |
| Nominal resistance tempco | ΔRAB/ΔT | | 50 | | ppm/°C | TA = -40°C to +85°C | 6 |
| Nominal resistance tempco | ΔRAB/ΔT | | 100 | | ppm/°C | TA = -40°C to +125°C | 6 |
| Ratiometric tempco | ΔVBW/ΔT | | 15 | | ppm/°C | Code = Mid scale (3Fh) | 6 |
| Bandwidth -3 dB 10k 7-bit | BW | | 240 | | kHz | 10 k 7-bit Code = 3Fh, load = 30 pF | 10 |
| Settling time 10k | tS | | 1 | | µs | Code = 00h -> 7Fh; 7Fh -> 00h, CL = 50 pF | 16 |
| Power dissipation 10k | PDISS | | 130 | | mW | VL = 5.5V, V+ = 18V, V- = -18V | 14 |
| Leakage current into A, W or B | ITL | | 5 | | nA | A = W = B = V- | 6 |
| Capacitance PA | CA | | 75 | | pF | Measured to V-, f =1 MHz, Wiper code = Mid Scale | 13 |
| Capacitance PW | CW | | 120 | | pF | Measured to V-, f =1 MHz, Wiper code = Mid Scale | 13 |
| Capacitance PB | CB | | 75 | | pF | Measured to V-, f =1 MHz, Wiper code = Mid Scale | 13 |
| Operating temperature | TA | -40 | | 125 | °C | | 21 |
| Thermal resistance TSSOP-14 | θJA | | 100 | | °C/W | 14L-TSSOP (ST) | 21 |
| V+ with respect to DGND | | -0.3 | | 40 | V | DGND - 0.3V to 40.0V | 3 |
| VL with respect to DGND | | -0.6 | | 7 | V | | 3 |
| Digital pins with respect to DGND | | -0.6 | | | V | SCL, SDA, A0, A1, WLAT, SHDN: -0.6V to VL + 0.6V | 3 |
| Continuous current into PxA/PxW/PxB | | -12.5 | | 12.5 | mA | RAB = 10 kΩ | 3 |
| Package power dissipation TSSOP-14 | | | | 1000 | mW | TA = +50°C, TJ = +150°C | 3 |
| Maximum junction temperature | TJ | | | 150 | °C | | 3 |
| Storage temperature | | -65 | | 150 | °C | | 3 |
| ESD HBM | | | | 5 | kV | Human Body Model, all pins | 3 |
## CAD (KiCad official)
- Symbol: `MCP45HV31-103E`
- Footprint: `Package_SO:TSSOP-14_4.4x5mm_P0.65mm`
- 3D model: TSSOP-14 (KiCad packages3D, STEP)
- 3D model files: `mcp45hv31-103e-etched.step` / `mcp45hv31-103e-etched.glb` carry the MPN laser-etched on the die in a toggleable `Adom.LaserEtch` group (Fusion-ready); `mcp45hv31-103e.step` / `mcp45hv31-103e.glb` are the bare package body.
## Provenance
Data extracted from the manufacturer datasheet, not a distributor listing:
- **Datasheet:** [Microchip Tech datasheet](docs/mcp45hv31-103e-datasheet.pdf) (100 pp, sha256 `ab854db7c83242c1`, 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](docs/mcp45hv31-103e-datasheet.pdf)