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WS742905M-8
Public Made by Adomby adom
WILLSEMI(Will Semicon) Operational Amplifier, MSOP-8. 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
markdownWS742905M-8
WILLSEMI(Will Semicon) · Operational Amplifier · MSOP-8
WS742905M-8 from WILLSEMI(Will Semicon), in a MSOP-8. 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 channel A. |
| 2 | -INA | input | Inverting input of amplifier channel A. |
| 3 | +INA | input | Non-inverting input of amplifier channel A; the input common-mode range includes ground. |
| 4 | V- | power_in | Negative supply rail, the lower supply terminal for single or split supply operation. |
| 5 | +INB | input | Non-inverting input of amplifier channel B; the input common-mode range includes ground. |
| 6 | -INB | input | Inverting input of amplifier channel B. |
| 7 | OUTB | output | Output of amplifier channel B. |
| 8 | V+ | power_in | Positive supply rail; single supply voltage range is 3 to 36 V per the features list. |
Key specifications
| Parameter | Value |
|---|---|
| Manufacturer | WILLSEMI(Will Semicon) |
| Package | MSOP-8 |
| Category | Amplifiers |
| Pins | 8 |
Electrical characteristics
Limits as printed in the datasheet (page.json metadata.characteristics carries them as data).
| Parameter | Symbol | Min | Typ | Max | Unit | Conditions | Page |
|---|---|---|---|---|---|---|---|
| Input Offset Voltage | VOS | -3.5 | 0.1 | 3.5 | mV | VCM= VSUPPLY/2 | 3 |
| Supply Voltage | VCC | 42 | V | 2 | |||
| Input Differential Voltage | VIDR | 42 | V | 2 | |||
| 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 | |||
| Human Body Model ESD | HBM | -1500 | 1500 | V | MIL-STD-883H Method 3015.8 | 2 | |
| Charged Device Model ESD | CDM | -1500 | 1500 | V | JEDEC-EIA/JESD22-C101E | 2 | |
| Common Mode Rejection Ratio | CMRR | 105 | 130 | dB | DC, VS=30V, VCM=0V to 28V | 3 | |
| Power Supply Rejection Ratio | PSRR | 105 | 120 | dB | VS=5V to 30V | 3 | |
| Open Loop Large Signal Gain | AVOL | 90 | 95 | dB | VS=5V, VOUT=0.1V to 4.9V, RLOAD=2k | 3 | |
| Open Loop Large Signal Gain | AVOL | 90 | 125 | dB | VS=15V, VOUT=1V to 14V, RLOAD=10k | 3 | |
| Output Short-Circuit Current Source | ISC | 18 | 21 | mA | Source Current, VS=30V | 3 | |
| Output Short-Circuit Current Sink | ISC | 18 | 23 | mA | Sink Current, VS=30V | 3 | |
| Quiescent Current per Amplifier | IQ | 120 | 165 | μA | VS=5V No Load | 3 | |
| Quiescent Current per Amplifier | IQ | 140 | 175 | μA | VS=30V No Load | 3 | |
| High Level Output Voltage | VOH | 13.6 | V | RLOAD=2k | 3 | ||
| High Level Output Voltage | VOH | 14.7 | V | RLOAD=10k | 3 | ||
| Low Level Output Voltage | VOL | -13.9 | V | RLOAD=2k | 3 | ||
| Low Level Output Voltage | VOL | -14.7 | V | RLOAD=10k | 3 | ||
| Input Offset Voltage Drift | VOS | 3 | μV/°C | 3 | |||
| Input Bias Current | IIB | 20 | pA | 3 | |||
| Input Offset Current | IOS | 20 | pA | 3 | |||
| Input Voltage Noise | Vn | 8 | VP-P | f=0.1Hz to10Hz | 3 | ||
| Input Voltage Noise Density | en | 32 | nV/√Hz | f=1KHz | 3 | ||
| Input Voltage Noise Density | en | 23 | nV/√Hz | f=10KHz | 3 | ||
| Phase Margin | PM | 67 | º | RLOAD=2k, CLOAD=100pF | 3 | ||
| Gain Margin | GM | -15 | dB | RLOAD=2k, CLOAD=100pF | 3 | ||
| Gain-Bandwidth Product | GBWP | 3.5 | MHz | f=1kHz | 3 | ||
| Settling Time | tS | 1.4 | μs | AV=1, VOUT=1V, 0.1% | 3 | ||
| Slew Rate | SR | 2 | V/s | AV=1, VS=±15V, VOUT=-10V to 10V, RLOAD=10k, CLOAD=100pF | 3 | ||
| Full Power Bandwidth | FPBW | 58 | kHz | 3 | |||
| Total Harmonic Distortion and Noise | THD+N | -100 | dB | f=1kHz, AV=1, RLOAD=2k, VOUT=2VPP | 3 | ||
| Channel Separation | Xtalk | 95 | dB | f=1kHz | 3 |
CAD (KiCad official)
- Symbol:
WS742905M-8 - Footprint:
Package_SO:MSOP-8_3x3mm_P0.65mm - 3D model: MSOP-8 (KiCad packages3D, STEP)
- 3D model files:
ws742905m-8-etched.step/ws742905m-8-etched.glbcarry the MPN laser-etched on the die in a toggleableAdom.LaserEtchgroup (Fusion-ready);ws742905m-8.step/ws742905m-8.glbare the bare package body.
Provenance
Data extracted from the manufacturer datasheet, not a distributor listing:
- Datasheet: WILLSEMI(Will Semicon) datasheet (11 pp, sha256
22cfc9e0260b5b3d, retrieved 2026-10-27, 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).