component

OPA2340 Dual RRIO Op-Amp

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by Ray

Dual rail-to-rail input/output op-amp with 5.5 MHz bandwidth, single-supply.

op-amprail-to-raildualsingle-supplytisoic-8
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README

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OPA2340

Texas Instruments · Operational Amplifier · SOIC-8

The OPA2340 is a dual rail-to-rail input/output operational amplifier with 5.5 MHz bandwidth and low quiescent current. Its inputs and outputs swing to within millivolts of both supply rails, maximizing dynamic range on a single supply, suiting sensor buffering, active filters, and data-acquisition front ends.

Pinout

Pin Name Type Function
1 OUT A output Output of amplifier channel A. Rail-to-rail output swings within 1 mV of supply rails with a 100-kOhm load.
2 -IN A input Negative (inverting) input of amplifier channel A. Rail-to-rail input common-mode range extends 500 mV below V- and 500 mV above V+.
3 +IN A input Positive (noninverting) input of amplifier channel A. Rail-to-rail input common-mode range extends 500 mV below V- and 500 mV above V+.
4 V- power_in Negative (lowest) power supply. Typically ground in single-supply operation. Total supply voltage V+ to V- must be 2.7 V to 5.5 V.
5 +IN B input Positive (noninverting) input of amplifier channel B. Rail-to-rail input common-mode range extends 500 mV below V- and 500 mV above V+.
6 -IN B input Negative (inverting) input of amplifier channel B. Rail-to-rail input common-mode range extends 500 mV below V- and 500 mV above V+.
7 OUT B output Output of amplifier channel B. Rail-to-rail output swings within 1 mV of supply rails with a 100-kOhm load.
8 V+ power_in Positive (highest) power supply. Single-supply range 2.7 V to 5.5 V referenced to V-. Bypass with a 0.1 uF ceramic capacitor to V-.

Key specifications

Parameter Value
Type Dual rail-to-rail I/O op-amp
Gain-bandwidth product 5.5 MHz typ
Supply voltage 2.5 V to 5.5 V single
Supply current 750 uA/amp typ
Slew rate 6 V/us typ
Input offset voltage 150 uV typ
Operating temperature -40 C to 85 C

Ordering variants

Same part, different packaging or reel option.

  • OPA2340DGK
  • OPA2340DGKR
  • OPA2340D
  • OPA2340DR
  • OPA2340P

CAD (KiCad official)

  • Symbol: opa2340.kicad_sym
  • Footprint: opa2340.kicad_mod
  • 3D model: SOIC-8 body from KiCad Package_SO/SOIC-8_3.9x4.9mm_P1.27mm.

Provenance

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

  • Datasheet: Texas Instruments datasheet (48 pp, sha256 8099f9f9e8e49c45, 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