# DIO20721ST5

**DIOO** · Operational Amplifier · SOT-23-5

DIO20721ST5 from DIOO, 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 | Amplifier output. Rail-to-rail output stage; typical output current 85mA at V+=5V (20-27mA at V+=2.5V) with closed-loop output impedance ~2.8Ω at 1MHz. |
| 2 | V- | power_in | Negative supply / ground reference. Tie to GND for single-supply operation. Supply range (V+ - V-) is 2.5V to 5.5V (absolute max 7V). |
| 3 | +IN | input | Non-inverting input. Rail-to-rail common-mode range from (V-)-0.1V to (V+)+0.1V. Input bias current ~1pA. |
| 4 | -IN | input | Inverting input. Rail-to-rail common-mode range from (V-)-0.1V to (V+)+0.1V. Input offset voltage 0.5mV typical (±5mV max over -40 to 125°C). |
| 5 | V+ | power_in | Positive supply. 2.5V to 5.5V recommended (absolute max 7V). Decouple close to the pin. PSRR is 110dB typical. |

## Key specifications

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

## Ordering variants

- `DIO20721ST5`
- `DIO20721ST5SC5`
- `DIO20721ST5DST6`
- `DIO20721ST5MP8`
- `DIO20721ST5SO8`
- `DIO20721ST5TP8`
- `DIO20721ST5CS14`
- `DIO20721ST5TP14`

## CAD (KiCad official)

- Symbol: `DIO20721ST5`
- Footprint: `Package_TO_SOT_SMD:SOT-23-5`
- 3D model: SOT-23-5 (KiCad packages3D, STEP)
- 3D model files: `dio20721st5-etched.step` / `dio20721st5-etched.glb` carry the MPN laser-etched on the die in a toggleable `Adom.LaserEtch` group (Fusion-ready); `dio20721st5.step` / `dio20721st5.glb` are the bare package body.

## Provenance

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

- **Datasheet:** [DIOO datasheet](docs/dio20721st5-datasheet.pdf) (None pp, sha256 `036a412f5f53e626`, retrieved 2026-08-17, tier: lcsc)
- **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/dio20721st5-datasheet.pdf)