Design tool
OPA313
Single, 5.5-V, 1-MHz, low quiescent current (50-μA), RRIO operational amplifier
Data sheet
OPA313
- 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.
Technical documentation
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View all 8 | 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 Reference Design (Rev. A)
SBOM776A.ZIP (127 KB) - TINA-TI Reference Design
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
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Design tool
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Simulation tool
PSPICE-FOR-TI — PSpice® for TI design and simulation tool
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 (...)
Simulation tool
TINA-TI — SPICE-based analog simulation program
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User guide: PDF
Reference designs
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Reference designs
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Reference designs
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| Package | Pins | Download |
|---|---|---|
| SOT-23 (DBV) | 5 | View options |
| SOT-SC70 (DCK) | 5 | View options |
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