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General-purpose op amps

OPA313

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Single, 5.5-V, 1-MHz, low quiescent current (50-μA), RRIO operational amplifier

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Data sheet

OPA313

ACTIVE
Data sheet Order now

Product details

Number of channels (#) 1 Total supply voltage (Max) (+5V=5, +/-5V=10) 5.5 Total supply voltage (Min) (+5V=5, +/-5V=10) 1.8 Rail-to-rail In, Out GBW (Typ) (MHz) 1 Slew rate (Typ) (V/us) 0.5 Vos (offset voltage @ 25 C) (Max) (mV) 2.5 Iq per channel (Typ) (mA) 0.05 Vn at 1 kHz (Typ) (nV/rtHz) 25 Rating Catalog Operating temperature range (C) -40 to 125 Offset drift (Typ) (uV/C) 2 Features EMI Hardened Input bias current (Max) (pA) 10 CMRR (Typ) (dB) 80 Output current (Typ) (mA) 15 Architecture CMOS
Number of channels (#) 1 Total supply voltage (Max) (+5V=5, +/-5V=10) 5.5 Total supply voltage (Min) (+5V=5, +/-5V=10) 1.8 Rail-to-rail In, Out GBW (Typ) (MHz) 1 Slew rate (Typ) (V/us) 0.5 Vos (offset voltage @ 25 C) (Max) (mV) 2.5 Iq per channel (Typ) (mA) 0.05 Vn at 1 kHz (Typ) (nV/rtHz) 25 Rating Catalog Operating temperature range (C) -40 to 125 Offset drift (Typ) (uV/C) 2 Features EMI Hardened Input bias current (Max) (pA) 10 CMRR (Typ) (dB) 80 Output current (Typ) (mA) 15 Architecture CMOS
SOT-23 (DBV) 5 5 mm² 2.9 x 1.6 SOT-SC70 (DCK) 5 4 mm² 2 x 2.1
  • Low IQ: 50 µA/ch
  • Wide Supply Range: 1.8 V to 5.5 V
  • Low Noise: 25 nV/√Hz at 1 kHz
  • Gain Bandwidth: 1 MHz
  • Low Input Bias Current: 0.2 pA
  • Low Offset Voltage: 0.5 mV
  • Unity-Gain Stable
  • Internal RF/EMI Filter
  • Extended Temperature Range:
    –40°C to +125°C
  • Low IQ: 50 µA/ch
  • Wide Supply Range: 1.8 V to 5.5 V
  • Low Noise: 25 nV/√Hz at 1 kHz
  • Gain Bandwidth: 1 MHz
  • Low Input Bias Current: 0.2 pA
  • Low Offset Voltage: 0.5 mV
  • Unity-Gain Stable
  • Internal RF/EMI Filter
  • Extended Temperature Range:
    –40°C to +125°C

The OPA313 family of single-, dual-, and quad-channel op amps represents a new generation of low-cost, general purpose, micro-power operational amplifiers. Featuring rail-to-rail input and very low noise (25 nV/√Hz at 1 kHz) makes this family very attractive for a variety of battery-powered applications that require a good balance between cost and performance. The low input bias current supports those op amps to be used in applications with megaohm source impedances.

The robust design of the OPA313 devices provides ease-of-use to the circuit designer: unity-gain stability with capacitive loads of up to 150 pF, integrated RF/EMI rejection filter, no phase reversal in overdrive conditions, and high electrostatic discharge (ESD) protection (4-kV HBM).

These devices are optimized for operation at voltages as low as +1.8 V (±0.9 V) and up to +5.5 V (±2.75 V), and are specified over the extended temperature range of –40°C to +125°C.

The OPA313 (single) is available in both SC70-5 and SOT23-5 packages. The OPA2313 (dual) is offered in SO-8, MSOP-8, and DFN-8 packages. The quad-channel OPA4313 is offered in a TSSOP-14 package.

The OPA313 family of single-, dual-, and quad-channel op amps represents a new generation of low-cost, general purpose, micro-power operational amplifiers. Featuring rail-to-rail input and very low noise (25 nV/√Hz at 1 kHz) makes this family very attractive for a variety of battery-powered applications that require a good balance between cost and performance. The low input bias current supports those op amps to be used in applications with megaohm source impedances.

The robust design of the OPA313 devices provides ease-of-use to the circuit designer: unity-gain stability with capacitive loads of up to 150 pF, integrated RF/EMI rejection filter, no phase reversal in overdrive conditions, and high electrostatic discharge (ESD) protection (4-kV HBM).

These devices are optimized for operation at voltages as low as +1.8 V (±0.9 V) and up to +5.5 V (±2.75 V), and are specified over the extended temperature range of –40°C to +125°C.

The OPA313 (single) is available in both SC70-5 and SOT23-5 packages. The OPA2313 (dual) is offered in SO-8, MSOP-8, and DFN-8 packages. The quad-channel OPA4313 is offered in a TSSOP-14 package.
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Technical documentation

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Type Title Date
* Data sheet 1-MHz, Micro-Power, Low-Noise, RRIO, 1.8-V CMOS Op Amp Precision Value Line Seri datasheet (Rev. C) 06 Mar 2013
Technical article What is an op amp? 21 Jan 2020
E-book Analog Engineer’s Pocket Reference Guide Fifth Edition (Rev. C) 30 Nov 2018
Technical article How to lay out a PCB for high-performance, low-side current-sensing designs 06 Feb 2018
Technical article Low-side current sensing for high-performance cost-sensitive applications 22 Jan 2018
Technical article Voltage and current sensing in HEV/EV applications 22 Nov 2017
E-book The Signal e-book: A compendium of blog posts on op amp design topics 28 Mar 2017
More literature Precision Amplifier Quickstart Kit brochure (Rev. A) 13 Jan 2015

Design & development

For additional terms or required resources, click any title below to view the detail page where available.

Evaluation board

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User guide: PDF
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Simulation model

OPA313 TINA-TI Spice Model (Rev. A)

SBOM775A.ZIP (4 KB) - TINA-TI Spice Model
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Simulation model

OPA313 TINA-TI Reference Design (Rev. A)

SBOM776A.ZIP (127 KB) - TINA-TI Reference Design
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Simulation model

OPA313 PSpice Model (Rev. B)

SBOMAQ3B.ZIP (22 KB) - PSpice Model
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Simulation tool

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PSpice® for TI is a design and simulation environment that helps evaluate functionality of analog circuits. This full-featured, design and simulation suite uses an analog analysis engine from Cadence®. Available at no cost, PSpice for TI includes one of the largest model libraries in the (...)
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Simulation tool

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Calculation tool

ANALOG-ENGINEER-CALC — Analog engineer's calculator

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Design tool

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Design tool

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Design tool

Simulation for Low-Side, Bidirectional Current Sensing Circuit

SBOC500.ZIP (297 KB)
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Package Pins Download
SC70 (DCK) 5 View options
SOT-23 (DBV) 5 View options

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