# LMV321AIDBVR

**Texas Instruments** · Operational Amplifier · SOT-23-5

LMV321AIDBVR from Texas Instruments, in a SOT-23-5. Pinout and pin descriptions extracted from the manufacturer datasheet by ds2sf; symbol, footprint, and 3D from KiCad-official CAD.

## Pinout

| Pin | Name | Type | Function |
|---|---|---|---|
| 1 | OUT | output | Op-amp output. Rail-to-rail output swing; drives up to 500 pF capacitive load; short-circuit protected to ground (one amplifier per package). |
| 2 | V- | power_in | Negative (lowest) supply, or ground for single-supply operation. Total supply span (V+) - (V-) is 2.5 V to 5.5 V (6 V absolute maximum). |
| 3 | +IN | input | Noninverting input. Common-mode range extends from (V-) - 0.5 V to (V+) + 0.5 V. Input bias current typically 10 pA; diode-clamped to supply rails (limit external current to <10 mA). |
| 4 | -IN | input | Inverting input. Common-mode range extends from (V-) - 0.5 V to (V+) + 0.5 V. Input bias current typically 10 pA; diode-clamped to supply rails (limit external current to <10 mA). |
| 5 | V+ | power_in | Positive (highest) supply. Total supply span (V+) - (V-) is 2.5 V to 5.5 V (6 V absolute maximum). Typical quiescent current 70 μA per channel. |

## Key specifications

| Parameter | Value |
|---|---|
| Manufacturer | Texas Instruments |
| Package | SOT-23-5 |
| Category | Op-amp/Cmp |
| Pins | 5 |

## Ordering variants

Same part, different packaging or reel option.

- `LMV321AIDBVR`
- `LMV321AIDBVT`
- `LMV321AIDBVRIDCKR`
- `LMV321AIDBVRIDCKT`
- `LMV321AIDBVRAUIDBVR`

## 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 ([V+] – [V–]) |  | 0 |  | 6 | V |  | 6 |
| Signal input pins current |  | -10 |  | 10 | mA |  | 6 |
| Operating temperature, TA | TA | -55 |  | 150 | °C |  | 6 |
| Operating junction temperature | TJ |  |  | 150 | °C |  | 6 |
| Storage temperature | Tstg | -65 |  | 150 | °C |  | 6 |
| Supply voltage | VS | 2.5 |  | 5.5 | V |  | 6 |
| Specified temperature | TA | -40 |  | 125 | °C |  | 6 |
| Input offset voltage | VOS | -4 | 1 | 4 | mV | Vs = 5 V | 8 |
| Input offset voltage | VOS | -5 |  | 5 | mV | Vs = 5 V, TA = –40°C to 125°C | 8 |
| Power-supply rejection ratio | PSRR | 78 | 100 |  | dB | VS = 2.5 to 5.5 V, VCM = (V–) | 8 |
| Common-mode rejection ratio | CMRR | 86 |  |  | dB | VS = 2.5 V, (V–) – 0.1 V < VCM < (V+) – 1.4 V, TA = –40°C to 125°C | 8 |
| Common-mode rejection ratio | CMRR | 95 |  |  | dB | VS = 5.5 V, (V–) – 0.1 V < VCM < (V+) – 1.4 V, TA = –40°C to 125°C | 8 |
| Common-mode rejection ratio | CMRR | 63 | 77 |  | dB | VS = 5.5 V, (V–) – 0.1 V < VCM < (V+) + 0.1 V, TA = –40°C to 125°C | 8 |
| Common-mode rejection ratio | CMRR | 68 |  |  | dB | VS = 2.5 V, (V–) – 0.1 V < VCM < (V+) + 0.1 V, TA = –40°C to 125°C | 8 |
| Open-loop voltage gain | AOL | 100 | 115 |  | dB | VS = 5.5 V, (V–) + 0.05 V < VO < (V+) – 0.05 V, RL = 10 kΩ | 8 |
| Open-loop voltage gain | AOL | 98 |  |  | dB | VS = 2.5 V, (V–) + 0.04 V < VO < (V+) – 0.04 V, RL = 10 kΩ | 8 |
| Open-loop voltage gain | AOL | 112 |  |  | dB | VS = 2.5 V, (V–) + 0.1 V < VO < (V+) – 0.1 V, RL = 2 kΩ | 8 |
| Open-loop voltage gain | AOL | 128 |  |  | dB | VS = 5.5 V, (V–) + 0.15 V < VO < (V+) – 0.15 V, RL = 2 kΩ | 8 |
| Voltage output swing from supply rails | VO |  | 20 | 50 | mV | VS = 5.5 V, RL = 10 kΩ | 8 |
| Voltage output swing from supply rails | VO |  | 40 | 75 | mV | VS = 5.5 V, RL = 2 kΩ | 8 |
| Specified voltage range | VS | 2.5 |  | 5.5 | V |  | 8 |
| Quiescent current per amplifier | IQ |  | 70 | 125 | µA | IO = 0 mA, VS = 5.5 V | 8 |
| Quiescent current per amplifier | IQ |  |  | 150 | µA | IO = 0 mA, VS = 5.5 V, TA = –40°C to 125°C | 8 |
| Junction-to-ambient thermal resistance (DBV SOT-23) | RθJA |  | 232.8 |  | °C/W | DBV (SOT-23), 5 pins | 7 |
| Junction-to-case (top) thermal resistance (DBV SOT-23) | RθJC(top) |  | 153.8 |  | °C/W | DBV (SOT-23), 5 pins | 7 |
| Junction-to-board thermal resistance (DBV SOT-23) | RθJB |  | 100.9 |  | °C/W | DBV (SOT-23), 5 pins | 7 |
| Junction-to-top characterization parameter (DBV SOT-23) | ψJT |  | 77.2 |  | °C/W | DBV (SOT-23), 5 pins | 7 |
| Junction-to-board characterization parameter (DBV SOT-23) | ψJB |  | 100.4 |  | °C/W | DBV (SOT-23), 5 pins | 7 |

## CAD (KiCad official)

- Symbol: `LMV321AIDBVR`
- Footprint: `Package_TO_SOT_SMD:SOT-23-5`
- 3D model: SOT-23-5 (KiCad packages3D, STEP)
- 3D model files: `lmv321aidbvr-etched.step` / `lmv321aidbvr-etched.glb` carry the MPN laser-etched on the die in a toggleable `Adom.LaserEtch` group (Fusion-ready); `lmv321aidbvr.step` / `lmv321aidbvr.glb` are the bare package body.

## 3D model downloads

Two STEP files. Same geometry, different body top:

| File | Size | Use it when |
|---|---|---|
| [`lmv321aidbvr.step`](lmv321aidbvr.step) | 85 KB | You want the bare part, or you mark your own boards. |
| [`lmv321aidbvr-etched.step`](lmv321aidbvr-etched.step) | 1.8 MB | You want the part with `LMV321AIDBVR` already on it. |

The marking in the etched file is real recessed geometry cut into the solid, not a
texture or a decal: 473 faces against 102 in the bare model. It
survives export, section views, and rendering in any CAD tool, and it drops straight
into KiCad or Fusion with no extra setup.

## Provenance

Data extracted from the manufacturer datasheet, not a distributor listing:

- **Datasheet:** [Texas Instruments datasheet](https://www.ti.com/lit/ds/symlink/lmv321ai.pdf) (48 pp, sha256 `d259d3712869641e`, 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).

[Datasheet PDF](docs/lmv321aidbvr-datasheet.pdf)