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ME321AM5G
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MICRONE Operational Amplifier, SOT-23-5. Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.
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ME321AM5G
MICRONE · Operational Amplifier · SOT-23-5
ME321AM5G from MICRONE, in a SOT-23-5. 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 | +IN | input | Non-inverting input; the datasheet gives an input common-mode range of -0.1 V to +5.5 V when VS = 5.5 V. |
| 2 | -VS | power_in | Negative power supply of the IC; for single-supply use this pin is tied to ground, and the part operates from 2.1 V to 5.5 V total supply (±1.05 V to ±2.75 V dual supply). |
| 3 | -IN | input | Inverting input of the amplifier channel; the datasheet table prints this pin as "-INA B", which is read here as the inverting input. |
| 4 | OUT | output | Amplifier output, which swings close to the rails, with VOH of 4.999 V and VOL of 1 mV at RL = 100 kΩ. |
| 5 | +VS | power_in | Positive power supply of the IC; a 0.1 µF ceramic bypass capacitor to ground should be placed close to this pin for single-supply operation. |
Key specifications
| Parameter | Value |
|---|---|
| Manufacturer | MICRONE |
| Package | SOT-23-5 |
| Category | Amplifiers/Comparators |
| Pins | 5 |
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 | -4 | 0.8 | 4 | mV | VCM = VS/2 | 3 |
| Input common-mode voltage range | VCM | -0.1 | 5.5 | V | VS = 5.5V | 3 | |
| Common-mode rejection ratio | CMRR | 73 | 85 | dB | VS = 5.5V, VCM = -0.1V to 4V | 3 | |
| Common-mode rejection ratio | CMRR | 70 | 80 | dB | VS = 5.5V, VCM = -0.1V to 5.6V | 3 | |
| Open-loop voltage gain | AOL | 80 | 86 | dB | RL = 5kΩ, VO = +0.1V to +4.9V | 3 | |
| Open-loop voltage gain | AOL | 83 | 89 | dB | RL = 100kΩ, VO = +0.035V to +4.965V | 3 | |
| Output voltage high | VOH | 4.999 | V | RL = 100kΩ | 3 | ||
| Output voltage low | VOL | 1 | mV | RL = 100kΩ | 3 | ||
| Output voltage high | VOH | 4.996 | V | RL = 10kΩ | 3 | ||
| Output voltage low | VOL | 5 | mV | RL = 10kΩ | 3 | ||
| Output source current | ISOURCE | 70 | 85 | mA | RL = 10Ω to VS/2 | 3 | |
| Output sink current | ISINK | 60 | 75 | mA | 3 | ||
| Operating voltage range | 2.1 | 5.5 | V | 3 | |||
| Power supply rejection ratio | PSRR | 61 | 82 | dB | VS = +2.5V to +5.5V, VCM = +0.5V | 4 | |
| Quiescent current | IQ | 65 | 85 | μA | 4 | ||
| Power supply voltage (absolute maximum) | 2.1 | 6 | V | 3 | |||
| Storage temperature | -65 | 150 | ℃ | 3 | |||
| ESD voltage | 4000 | V | 3 | ||||
| Junction temperature | -40 | 150 | ℃ | 3 | |||
| Operating temperature | -40 | 125 | ℃ | 3 | |||
| Soldering temperature | 260 | ℃ | 10 s | 3 | |||
| Input offset voltage temperature coefficient | ΔVOS/ΔT | 2 | μV/℃ | 3 | |||
| Input bias current | IB | 10 | pA | 3 | |||
| Input offset current | IOS | 1 | pA | 3 | |||
| Unity-gain bandwidth | GBW | 1 | MHz | RL = 100kΩ，CL=100pF | 4 | ||
| Phase margin | PM | 63 | º | RL = 100kΩ，CL=100pF | 4 | ||
| Slew rate | SR | 0.58 | V/μs | AV = 1, VOUT = 1.5V to 3.5V，RL = 100kΩ，CL=100pF | 4 | ||
| Settling time to 0.1% | tS | 4.2 | μs | AV = 1, VOUT = 1.5V to 3.5V，RL = 100kΩ，CL=100pF | 4 | ||
| Overload recovery time | 2.6 | μs | VIN·Gain > VS，RL = 100kΩ，CL=100pF | 4 | |||
| Voltage noise spectral density | en | 27 | nV/ Hz | f = 1kHz | 4 | ||
| Voltage noise spectral density | en | 20 | nV/ Hz | f = 10kHz | 4 |
CAD (KiCad official)
- Symbol:
ME321AM5G - Footprint:
Package_TO_SOT_SMD:SOT-23-5 - 3D model: SOT-23-5 (KiCad packages3D, STEP)
- 3D model files:
me321am5g-etched.step/me321am5g-etched.glbcarry the MPN laser-etched on the die in a toggleableAdom.LaserEtchgroup (Fusion-ready);me321am5g.step/me321am5g.glbare the bare package body.
Provenance
Data extracted from the manufacturer datasheet, not a distributor listing:
- Datasheet: MICRONE datasheet (10 pp, sha256
c21117df2c3ec27c, retrieved 2026-10-17, tier: lcsc) - Datasheet language: Chinese. Pin names, descriptions, and specs on this page were extracted and translated to English by ds2sf; the linked PDF is the manufacturer original.
- 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).
# ME321AM5G
**MICRONE** · Operational Amplifier · SOT-23-5
ME321AM5G from MICRONE, in a SOT-23-5. 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 | +IN | input | Non-inverting input; the datasheet gives an input common-mode range of -0.1 V to +5.5 V when VS = 5.5 V. |
| 2 | -VS | power_in | Negative power supply of the IC; for single-supply use this pin is tied to ground, and the part operates from 2.1 V to 5.5 V total supply (±1.05 V to ±2.75 V dual supply). |
| 3 | -IN | input | Inverting input of the amplifier channel; the datasheet table prints this pin as "-INA B", which is read here as the inverting input. |
| 4 | OUT | output | Amplifier output, which swings close to the rails, with VOH of 4.999 V and VOL of 1 mV at RL = 100 kΩ. |
| 5 | +VS | power_in | Positive power supply of the IC; a 0.1 µF ceramic bypass capacitor to ground should be placed close to this pin for single-supply operation. |
## Key specifications
| Parameter | Value |
|---|---|
| Manufacturer | MICRONE |
| Package | SOT-23-5 |
| Category | Amplifiers/Comparators |
| Pins | 5 |
## 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 | -4 | 0.8 | 4 | mV | VCM = VS/2 | 3 |
| Input common-mode voltage range | VCM | -0.1 | | 5.5 | V | VS = 5.5V | 3 |
| Common-mode rejection ratio | CMRR | 73 | 85 | | dB | VS = 5.5V, VCM = -0.1V to 4V | 3 |
| Common-mode rejection ratio | CMRR | 70 | 80 | | dB | VS = 5.5V, VCM = -0.1V to 5.6V | 3 |
| Open-loop voltage gain | AOL | 80 | 86 | | dB | RL = 5kΩ, VO = +0.1V to +4.9V | 3 |
| Open-loop voltage gain | AOL | 83 | 89 | | dB | RL = 100kΩ, VO = +0.035V to +4.965V | 3 |
| Output voltage high | VOH | 4.999 | | | V | RL = 100kΩ | 3 |
| Output voltage low | VOL | | | 1 | mV | RL = 100kΩ | 3 |
| Output voltage high | VOH | 4.996 | | | V | RL = 10kΩ | 3 |
| Output voltage low | VOL | | | 5 | mV | RL = 10kΩ | 3 |
| Output source current | ISOURCE | 70 | 85 | | mA | RL = 10Ω to VS/2 | 3 |
| Output sink current | ISINK | 60 | 75 | | mA | | 3 |
| Operating voltage range | | 2.1 | | 5.5 | V | | 3 |
| Power supply rejection ratio | PSRR | 61 | 82 | | dB | VS = +2.5V to +5.5V, VCM = +0.5V | 4 |
| Quiescent current | IQ | | 65 | 85 | μA | | 4 |
| Power supply voltage (absolute maximum) | | 2.1 | | 6 | V | | 3 |
| Storage temperature | | -65 | | 150 | ℃ | | 3 |
| ESD voltage | | | | 4000 | V | | 3 |
| Junction temperature | | -40 | | 150 | ℃ | | 3 |
| Operating temperature | | -40 | | 125 | ℃ | | 3 |
| Soldering temperature | | | | 260 | ℃ | 10 s | 3 |
| Input offset voltage temperature coefficient | ΔVOS/ΔT | | 2 | | μV/℃ | | 3 |
| Input bias current | IB | | 10 | | pA | | 3 |
| Input offset current | IOS | | 1 | | pA | | 3 |
| Unity-gain bandwidth | GBW | | 1 | | MHz | RL = 100kΩ，CL=100pF | 4 |
| Phase margin | PM | | 63 | | º | RL = 100kΩ，CL=100pF | 4 |
| Slew rate | SR | | 0.58 | | V/μs | AV = 1, VOUT = 1.5V to 3.5V，RL = 100kΩ，CL=100pF | 4 |
| Settling time to 0.1% | tS | | 4.2 | | μs | AV = 1, VOUT = 1.5V to 3.5V，RL = 100kΩ，CL=100pF | 4 |
| Overload recovery time | | | 2.6 | | μs | VIN·Gain > VS，RL = 100kΩ，CL=100pF | 4 |
| Voltage noise spectral density | en | | 27 | | nV/ Hz | f = 1kHz | 4 |
| Voltage noise spectral density | en | | 20 | | nV/ Hz | f = 10kHz | 4 |
## CAD (KiCad official)
- Symbol: `ME321AM5G`
- Footprint: `Package_TO_SOT_SMD:SOT-23-5`
- 3D model: SOT-23-5 (KiCad packages3D, STEP)
- 3D model files: `me321am5g-etched.step` / `me321am5g-etched.glb` carry the MPN laser-etched on the die in a toggleable `Adom.LaserEtch` group (Fusion-ready); `me321am5g.step` / `me321am5g.glb` are the bare package body.
## Provenance
Data extracted from the manufacturer datasheet, not a distributor listing:
- **Datasheet:** [MICRONE datasheet](https://jlcpcb.com/api/file/downloadByFileSystemAccessId/8588917368190087168) (10 pp, sha256 `c21117df2c3ec27c`, retrieved 2026-10-17, tier: lcsc)
- **Datasheet language:** Chinese. Pin names, descriptions, and specs on this page were extracted and translated to English by ds2sf; the linked PDF is the manufacturer original.
- **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/me321am5g-datasheet.pdf)