LMV321
Public Made by Adomby adom
TI single low-voltage op-amp, SOT-23-5. Rail-to-rail output, 1 MHz, 2.7-5.5 V. Tiny general-purpose op-amp. Datasheet-verified.
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markdownLMV321
Texas Instruments · Low-voltage RRIO op-amp (single) · SOT-23-5
A single low-voltage operational amplifier in the tiny SOT-23-5, the go-to when you need one op-amp in the smallest space on a 3.3 V or 5 V board. Its output swings rail to rail, it works from a single 2.7 to 5.5 V supply, and its 1 MHz gain-bandwidth and 1 V/us slew rate cover sensor buffering, filtering, and level scaling. Because it comes one-per-package it fits a single gain stage without wasting half of a dual op-amp. Pinout is IN+, GND (V-), IN-, OUT, VCC+ (V+).
Pinout
| Pin | Name | Type | Function |
|---|---|---|---|
| 1 | 1IN+ | input | Noninverting input of the op-amp. Input voltage range −0.2 V to 5.7 V (absolute max); common-mode range specified from V− to (V+ − 1 V). High input impedance analog input. |
| 2 | GND | power_in | Negative supply / ground. Connects to 0 V for single-supply operation (VCC+ from 2.7 V to 5.5 V) or to V− for split-supply operation. |
| 3 | 1IN− | input | Inverting input of the op-amp. Differential input voltage rating ±5.5 V with respect to IN+. High input impedance analog input. |
| 4 | OUT | output | Rail-to-rail op-amp output. Short-circuit current typically 40 mA sourcing/sinking. Can swing to within a few mV of both supply rails under light load. |
| 5 | VCC+ | power_in | Positive supply pin. Recommended operating range 2.7 V to 5.5 V (5.5 V absolute maximum). Decouple with a 0.1 µF ceramic capacitor close to the pin. |
Key specifications
| Parameter | Value |
|---|---|
| Type | Single low-voltage op-amp |
| Output | rail-to-rail |
| Gain-bandwidth | 1 MHz |
| Slew rate | 1 V/µs |
| Supply voltage | 2.7-5.5 V |
| Input range | includes ground |
| Quiescent current | ~130 µA |
| Package | SOT-23-5 |
Ordering variants
Same part, different packaging or reel option.
LMV321IDBVR (SOT-23-5)LMV321IDCKR (SC-70-5)
CAD (KiCad official)
- Symbol:
Amplifier_Operational:LMV321 - Footprint:
Package_TO_SOT_SMD:SOT-23-5 - 3D model: SOT-23-5 (KiCad packages3D)
- 3D model files:
lmv321-etched.step/lmv321-etched.glbcarry the MPN laser-etched on the die in a toggleableAdom.LaserEtchgroup (Fusion-ready);lmv321.step/lmv321.glbare the bare package body.
Provenance
Data extracted from the manufacturer datasheet, not a distributor listing:
- Datasheet: Texas Instruments datasheet (53 pp, sha256
05e7739c25379268, retrieved 2026-08-17, tier: manufacturer) - Extractor:
ds2sf(Claude). Every pin and dimension is cited to a datasheet page; it refuses to fabricate. - CAD: KiCad official libraries (CC-BY-SA 4.0).