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Precision op amps (Vos<1mV)

OPA2350

ACTIVE

Dual single-supply, rail-to-rail, high speed, low-noise operational amplifier

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Data sheet

OPA2350

ACTIVE
Data sheet Order now

Product details

Number of channels (#) 2 Total supply voltage (Max) (+5V=5, +/-5V=10) 5.5 Total supply voltage (Min) (+5V=5, +/-5V=10) 2.7 Vos (offset voltage @ 25 C) (Max) (mV) 0.5 GBW (Typ) (MHz) 38 Features — Slew rate (Typ) (V/us) 22 Rail-to-rail In, Out Offset drift (Typ) (uV/C) 4 Iq per channel (Typ) (mA) 5.2 Vn at 1 kHz (Typ) (nV/rtHz) 7 CMRR (Typ) (dB) 84 Rating Catalog Operating temperature range (C) -40 to 85 Input bias current (Max) (pA) 10 Output current (Typ) (mA) 80 Architecture CMOS THD + N @ 1 kHz (Typ) (%) 0.0006
Number of channels (#) 2 Total supply voltage (Max) (+5V=5, +/-5V=10) 5.5 Total supply voltage (Min) (+5V=5, +/-5V=10) 2.7 Vos (offset voltage @ 25 C) (Max) (mV) 0.5 GBW (Typ) (MHz) 38 Features — Slew rate (Typ) (V/us) 22 Rail-to-rail In, Out Offset drift (Typ) (uV/C) 4 Iq per channel (Typ) (mA) 5.2 Vn at 1 kHz (Typ) (nV/rtHz) 7 CMRR (Typ) (dB) 84 Rating Catalog Operating temperature range (C) -40 to 85 Input bias current (Max) (pA) 10 Output current (Typ) (mA) 80 Architecture CMOS THD + N @ 1 kHz (Typ) (%) 0.0006
SOIC (D) 8 19 mm² 3.91 x 4.9 VSSOP (DGK) 8 15 mm² 3 x 4.9
  • Rail-to-Rail Input
  • Rail-to-Rail Output (Within 10 mV)
  • Wide Bandwidth: 38 MHz
  • High Slew Rate: 22 V/µs
  • Low Noise: 5 nV/√Hz
  • Low THD+Noise: 0.0006%
  • Unity-Gain Stable
  • MicroSize Packages
  • Single, Dual, and Quad
  • Rail-to-Rail Input
  • Rail-to-Rail Output (Within 10 mV)
  • Wide Bandwidth: 38 MHz
  • High Slew Rate: 22 V/µs
  • Low Noise: 5 nV/√Hz
  • Low THD+Noise: 0.0006%
  • Unity-Gain Stable
  • MicroSize Packages
  • Single, Dual, and Quad

The OPA350 series of rail-to-rail CMOS operational amplifiers are optimized for low voltage, single-supply operation. Rail-to-rail input and output, low noise (5 nV/√Hz), and high speed operation (38 MHz, 22 V/µs) make the amplifiers ideal for driving sampling Analog-to-Digital (A/D) converters. They are also suited for cell phone PA control loops and video processing (75-Ω drive capability), as well as audio and general purpose applications. Single, dual, and quad versions have identical specifications for maximum design flexibility.

The OPA350 series operates on a single supply as low as 2.5 V, with an input common-mode voltage range that extends 300 mV below ground and 300 mV above the positive supply. Output voltage swing is to within 10 mV of the supply rails, with a 10-kΩ load. Dual and quad designs feature completely independent circuitry for lowest crosstalk and freedom from interaction.

The single (OPA350) and dual (OPA2350) come in the miniature MSOP-8 surface mount, SO-8 surface mount, and DIP-8 packages. The quad (OPA4350) packages are in the space-saving SSOP-16 surface mount and SO-14 surface mount. All are specified from –40°C to 85°C and operate from –55°C to 150°C.

The OPA350 series of rail-to-rail CMOS operational amplifiers are optimized for low voltage, single-supply operation. Rail-to-rail input and output, low noise (5 nV/√Hz), and high speed operation (38 MHz, 22 V/µs) make the amplifiers ideal for driving sampling Analog-to-Digital (A/D) converters. They are also suited for cell phone PA control loops and video processing (75-Ω drive capability), as well as audio and general purpose applications. Single, dual, and quad versions have identical specifications for maximum design flexibility.

The OPA350 series operates on a single supply as low as 2.5 V, with an input common-mode voltage range that extends 300 mV below ground and 300 mV above the positive supply. Output voltage swing is to within 10 mV of the supply rails, with a 10-kΩ load. Dual and quad designs feature completely independent circuitry for lowest crosstalk and freedom from interaction.

The single (OPA350) and dual (OPA2350) come in the miniature MSOP-8 surface mount, SO-8 surface mount, and DIP-8 packages. The quad (OPA4350) packages are in the space-saving SSOP-16 surface mount and SO-14 surface mount. All are specified from –40°C to 85°C and operate from –55°C to 150°C.
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Much lower offset with faster speed and less IQ.
Same functionality with different pin-out to the compared device.
OPA3S328 ACTIVE High-speed (40 MHz), high-precision (60 µV), low-noise op amp with integrated gain switches For wider BW, lower noise, lower offset and integrated switches see the OPA3S328.

Technical documentation

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Type Title Date
* Data sheet OPAx350 High-Speed, Single-Supply, Rail-to-Rail Operational Amplifiers MicroAmplifier Series datasheet (Rev. D) PDF | HTML 21 Dec 2015
E-book The Signal e-book: A compendium of blog posts on op amp design topics 28 Mar 2017
Application note OPA350, OPA2350, OPA4350 EMI Immunity Performance (Rev. A) 02 Nov 2012
White paper HVAC Dual AC Motor Control with Active PFC Implementation Using Piccolo™ MCUs 15 Apr 2010
User guide DAP Signaling Conditioning Board Users Guide 18 Jun 2003

Design & development

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Evaluation board

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Simulation model

OPAx350 TINA-TI Reference Design (Rev. F)

SBOC202F.TSC (344 KB) - TINA-TI Reference Design
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Simulation model

OPAx350 PSpice Model (Rev. E)

SBOM071E.ZIP (29 KB) - PSpice Model
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Simulation model

OPAx350 TINA-TI Spice Model (Rev. E)

SBOM280E.ZIP (10 KB) - TINA-TI Spice Model
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Simulation tool

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Simulation tool

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Calculation tool

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Calculation tool

OPAMP-NOISECALC — Noise Calculator, Generator and Examples

This folder contains three tools to help in understandning and managing noise in cicuits. The included tools are:
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Design tool

CIRCUIT060012 — Single-supply, 2nd-order, multiple feedback low-pass filter circuit

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Reference designs

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SOIC (D) 8 View options
VSSOP (DGK) 8 View options

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