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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.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 (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