OPA991IDBVR 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	Amplifier output. Rail-to-rail output stage capable of sourcing/sinking ±75 mA and driving capacitive loads up to 1 nF.
2	V-	power_in	Negative (lowest) supply rail. Single-supply GND or negative rail of a bipolar supply. Total supply range 2.7 V to 40 V (±1.35 V to ±20 V) across V+ and V-.
3	IN+	input	Non-inverting input. Rail-to-rail input common-mode range; low input bias current (typ ±10 pA).
4	IN-	input	Inverting input. Rail-to-rail input common-mode range; low input bias current (typ ±10 pA).
5	V+	power_in	Positive (highest) supply rail. Total supply range 2.7 V to 40 V (±1.35 V to ±20 V) across V+ and V-. Quiescent current ~560 µA per amplifier.

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.

OPA991IDBVR
OPA991IDBVT
OPA991IDBVRSIDBVR
OPA991IDBVRSIDBVT
OPA991IDBVRIDCKR
OPA991IDBVRIDCKT

CAD (KiCad official)

Symbol: OPA991IDBVR
Footprint: Package_TO_SOT_SMD:SOT-23-5
3D model: SOT-23-5 (KiCad packages3D, STEP)

Provenance

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

Datasheet: Texas Instruments datasheet (77 pp, sha256 66cd6ff5fa13e39d, retrieved 2026-08-17, 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: 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