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WS72144H-14
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WILLSEMI(Will Semicon) Operational Amplifier, TSSOP-14. Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.
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WS72144H-14
WILLSEMI(Will Semicon) · Operational Amplifier · TSSOP-14
WS72144H-14 from WILLSEMI(Will Semicon), 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 | OUTA | output | Output of amplifier A; the datasheet gives an unlimited output short-circuit duration, with short-circuit current of 10 to 15 mA sink or source. |
| 2 | -INA | input | Inverting input of amplifier A; input common-mode voltage must stay within (V-)-0.3 V to (V+)+0.3 V. |
| 3 | +INA | input | Non-inverting input of amplifier A; input common-mode voltage must stay within (V-)-0.3 V to (V+)+0.3 V. |
| 4 | V+ | power_in | Positive supply; the supply voltage (V+)-(V-) must not exceed the 6 V absolute maximum. |
| 5 | +INB | input | Non-inverting input of amplifier B; input common-mode voltage must stay within (V-)-0.3 V to (V+)+0.3 V. |
| 6 | -INB | input | Inverting input of amplifier B; input common-mode voltage must stay within (V-)-0.3 V to (V+)+0.3 V. |
| 7 | OUTB | output | Output of amplifier B; the datasheet gives an unlimited output short-circuit duration, with short-circuit current of 10 to 15 mA sink or source. |
| 8 | OUTC | output | Output of amplifier C; the datasheet gives an unlimited output short-circuit duration, with short-circuit current of 10 to 15 mA sink or source. |
| 9 | -INC | input | Inverting input of amplifier C; input common-mode voltage must stay within (V-)-0.3 V to (V+)+0.3 V. |
| 10 | +INC | input | Non-inverting input of amplifier C; input common-mode voltage must stay within (V-)-0.3 V to (V+)+0.3 V. |
| 11 | V- | power_in | Negative supply; the supply voltage (V+)-(V-) must not exceed the 6 V absolute maximum. |
| 12 | +IND | input | Non-inverting input of amplifier D; input common-mode voltage must stay within (V-)-0.3 V to (V+)+0.3 V. |
| 13 | -IND | input | Inverting input of amplifier D; input common-mode voltage must stay within (V-)-0.3 V to (V+)+0.3 V. |
| 14 | OUTD | output | Output of amplifier D; the datasheet gives an unlimited output short-circuit duration, with short-circuit current of 10 to 15 mA sink or source. |
Key specifications
| Parameter | Value |
|---|---|
| Manufacturer | WILLSEMI(Will Semicon) |
| Package | TSSOP-14 |
| Category | Amplifiers |
| 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 | 1.6 | 5.5 | V | 3 | ||
| Supply Voltage, ([V+] - [V-]) | VS | 6 | V | 2 | |||
| Input Offset Voltage | VOS | -3 | 0.1 | 3 | mV | VCM= VS/2 and VCM=GND; * = full operating temperature range | 3 |
| Common Mode Rejection Ratio | CMRR | 55 | 75 | dB | VCM=0.1V to 4.9V; * = full operating temperature range | 3 | |
| Power Supply Rejection Ratio | PSRR | 65 | 91 | dB | * = full operating temperature range | 3 | |
| Open Loop Large Signal Gain | AVOL | 85 | 118 | dB | VOUT=0.1V to 4.9V, Rload=100k; * = full operating temperature range | 3 | |
| Output Short-Circuit Current | ISC | 10 | 15 | mA | Sink or Source Current | 3 | |
| Quiescent Current per Amplifier | IQ | 300 | 450 | nA | * = full operating temperature range | 3 | |
| Input Bias Current | IIB | 10 | pA | 3 | |||
| Input Offset Current | IOS | 10 | pA | 3 | |||
| Input Resistance | RIN | 1 | TΩ | 3 | |||
| Operating Free-Air Temperature Range | TA | -40 | 125 | °C | 2 | ||
| Storage Temperature Range | TSTG | -65 | 150 | °C | 2 | ||
| Junction Temperature Range | TJ | 150 | °C | 2 | |||
| Lead Temperature Range | TL | 260 | °C | 2 |
CAD (KiCad official)
- Symbol:
WS72144H-14 - Footprint:
Package_SO:TSSOP-14_4.4x5mm_P0.65mm - 3D model: TSSOP-14 (KiCad packages3D, STEP)
- 3D model files:
ws72144h-14-etched.step/ws72144h-14-etched.glbcarry the MPN laser-etched on the die in a toggleableAdom.LaserEtchgroup (Fusion-ready);ws72144h-14.step/ws72144h-14.glbare the bare package body.
Provenance
Data extracted from the manufacturer datasheet, not a distributor listing:
- Datasheet: WILLSEMI(Will Semicon) datasheet (12 pp, sha256
94680b3127000b44, retrieved 2026-10-29, tier: lcsc) - 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).
# WS72144H-14
**WILLSEMI(Will Semicon)** · Operational Amplifier · TSSOP-14
WS72144H-14 from WILLSEMI(Will Semicon), 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 | OUTA | output | Output of amplifier A; the datasheet gives an unlimited output short-circuit duration, with short-circuit current of 10 to 15 mA sink or source. |
| 2 | -INA | input | Inverting input of amplifier A; input common-mode voltage must stay within (V-)-0.3 V to (V+)+0.3 V. |
| 3 | +INA | input | Non-inverting input of amplifier A; input common-mode voltage must stay within (V-)-0.3 V to (V+)+0.3 V. |
| 4 | V+ | power_in | Positive supply; the supply voltage (V+)-(V-) must not exceed the 6 V absolute maximum. |
| 5 | +INB | input | Non-inverting input of amplifier B; input common-mode voltage must stay within (V-)-0.3 V to (V+)+0.3 V. |
| 6 | -INB | input | Inverting input of amplifier B; input common-mode voltage must stay within (V-)-0.3 V to (V+)+0.3 V. |
| 7 | OUTB | output | Output of amplifier B; the datasheet gives an unlimited output short-circuit duration, with short-circuit current of 10 to 15 mA sink or source. |
| 8 | OUTC | output | Output of amplifier C; the datasheet gives an unlimited output short-circuit duration, with short-circuit current of 10 to 15 mA sink or source. |
| 9 | -INC | input | Inverting input of amplifier C; input common-mode voltage must stay within (V-)-0.3 V to (V+)+0.3 V. |
| 10 | +INC | input | Non-inverting input of amplifier C; input common-mode voltage must stay within (V-)-0.3 V to (V+)+0.3 V. |
| 11 | V- | power_in | Negative supply; the supply voltage (V+)-(V-) must not exceed the 6 V absolute maximum. |
| 12 | +IND | input | Non-inverting input of amplifier D; input common-mode voltage must stay within (V-)-0.3 V to (V+)+0.3 V. |
| 13 | -IND | input | Inverting input of amplifier D; input common-mode voltage must stay within (V-)-0.3 V to (V+)+0.3 V. |
| 14 | OUTD | output | Output of amplifier D; the datasheet gives an unlimited output short-circuit duration, with short-circuit current of 10 to 15 mA sink or source. |
## Key specifications
| Parameter | Value |
|---|---|
| Manufacturer | WILLSEMI(Will Semicon) |
| Package | TSSOP-14 |
| Category | Amplifiers |
| 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 | 1.6 | | 5.5 | V | | 3 |
| Supply Voltage, ([V+] - [V-]) | VS | | | 6 | V | | 2 |
| Input Offset Voltage | VOS | -3 | 0.1 | 3 | mV | VCM= VS/2 and VCM=GND; * = full operating temperature range | 3 |
| Common Mode Rejection Ratio | CMRR | 55 | 75 | | dB | VCM=0.1V to 4.9V; * = full operating temperature range | 3 |
| Power Supply Rejection Ratio | PSRR | 65 | 91 | | dB | * = full operating temperature range | 3 |
| Open Loop Large Signal Gain | AVOL | 85 | 118 | | dB | VOUT=0.1V to 4.9V, Rload=100k; * = full operating temperature range | 3 |
| Output Short-Circuit Current | ISC | 10 | 15 | | mA | Sink or Source Current | 3 |
| Quiescent Current per Amplifier | IQ | | 300 | 450 | nA | * = full operating temperature range | 3 |
| Input Bias Current | IIB | | | 10 | pA | | 3 |
| Input Offset Current | IOS | | | 10 | pA | | 3 |
| Input Resistance | RIN | 1 | | | TΩ | | 3 |
| Operating Free-Air Temperature Range | TA | -40 | | 125 | °C | | 2 |
| Storage Temperature Range | TSTG | -65 | | 150 | °C | | 2 |
| Junction Temperature Range | TJ | | | 150 | °C | | 2 |
| Lead Temperature Range | TL | | | 260 | °C | | 2 |
## CAD (KiCad official)
- Symbol: `WS72144H-14`
- Footprint: `Package_SO:TSSOP-14_4.4x5mm_P0.65mm`
- 3D model: TSSOP-14 (KiCad packages3D, STEP)
- 3D model files: `ws72144h-14-etched.step` / `ws72144h-14-etched.glb` carry the MPN laser-etched on the die in a toggleable `Adom.LaserEtch` group (Fusion-ready); `ws72144h-14.step` / `ws72144h-14.glb` are the bare package body.
## Provenance
Data extracted from the manufacturer datasheet, not a distributor listing:
- **Datasheet:** [WILLSEMI(Will Semicon) datasheet](docs/ws72144h-14-datasheet.pdf) (12 pp, sha256 `94680b3127000b44`, retrieved 2026-10-29, 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](docs/ws72144h-14-datasheet.pdf)