Product details

Number of channels (#) 1 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 High Cload Drive 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 (#) 1 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 High Cload Drive 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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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 Tips and tricks for designing with voltage references (Rev. A) 07 May 2021
Circuit design Single-supply, high-input voltage, full-wave rectifier circuit PDF | HTML 13 Apr 2021
Circuit design Single-supply, low-input voltage, full-wave rectifier circuit (Rev. A) 01 Feb 2019
Analog Design Journal Q4 2009 Issue Analog Applications Journal 24 Sep 2018
E-book The Signal e-book: A compendium of blog posts on op amp design topics 28 Mar 2017
Analog Design Journal Using op amps to reduce near-field EMI on PCBs 26 Jan 2016
Technical article The importance of proper termination 28 Oct 2014
E-book The Best of Baker's Best – Amplifiers eBook 14 Jan 2014
Application note OPA350, OPA2350, OPA4350 EMI Immunity Performance (Rev. A) 02 Nov 2012
Analog Design Journal How the voltage reference affects ADC performance, Part 3 04 Oct 2009
Application note Optoelectronics Circuit Collection 11 Jun 2001

Design & development

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Evaluation board

DIP-ADAPTER-EVM — DIP adapter evaluation module

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DIYAMP-EVM — Universal Do-It-Yourself (DIY) Amplifier Circuit Evaluation Module

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Development kit

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Simulation model

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Simulation model

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Simulation model

OPAx350 TINA-TI Spice Model (Rev. E) OPAx350 TINA-TI Spice Model (Rev. E)

Simulation tool

PSPICE-FOR-TI PSpice® for TI design and 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

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Design tool

CIRCUIT060002 Temperature sensing with NTC thermistor circuit

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Design tool

CIRCUIT060003 Temperature sensing with PTC thermistor circuit

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CIRCUIT060004 Low-noise and long-range PIR sensor conditioner circuit

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Design tool

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Design tool

CIRCUIT060006 Bridge amplifier circuit

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Design tool

CIRCUIT060007 Low-side, bidirectional current-sensing circuit

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Design tool

CIRCUIT060008 Full-wave rectifier circuit

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Design tool

CIRCUIT060009 Half-wave rectifier circuit

The precision half-wave rectifier inverts and transfers only the negative-half input of a time varying input signal (preferably sinusoidal) to its output. By appropriately selecting the feedback resistor values, different gains can be achieved. Precision half-wave rectifiers are commonly used with (...)
Design tool

CIRCUIT060010 PWM generator circuit

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Design tool

CIRCUIT060011 Single-supply, second-order, multiple feedback high-pass filter circuit

The multiple-feedback (MFB) high-pass (HP) filter is a 2nd-order active filter. Vref provides a DC offset to accommodate for single-supply applications. This HP filter inverts the signal (Gain = –1 V/V) for frequencies in the pass band. An MFB filter is preferable when the gain is high or (...)
Design tool

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

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Design tool

CIRCUIT060014 Voltage-to-current (V-I) converter circuit with MOSFET

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Design tool

CIRCUIT060016 Non-inverting microphone pre-amplifier circuit

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Design tool

CIRCUIT060017 Dual-supply, discrete, programmable gain amplifier circuit

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Design tool

CIRCUIT060018 Photodiode amplifier circuit

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Design tool

CIRCUIT060019 Inverting op amp with non-inverting positive reference voltage circuit

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Design tool

CIRCUIT060020 Inverting amplifier circuit

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Design tool

CIRCUIT060058 Single-supply, low-input voltage full-wave rectifier circuit

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Design tool

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Design tool

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Design tool

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Design tool

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Reference designs

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Reference designs

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

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