1-Channel, 1-MHz, low-noise, low power, RRIO 1.8-V op amp
Product details
Parameters
Package | Pins | Size
Features
- 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
Description
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
= Top documentation for this product selected by TI
| Type | Title | Date | |
|---|---|---|---|
| * | Datasheet | 1-MHz, Micro-Power, Low-Noise, RRIO, 1.8-V CMOS Op Amp Precision Value Line Seri datasheet (Rev. C) | Mar. 06, 2013 |
| Technical articles | What is an op amp? | Jan. 21, 2020 | |
| Application notes | Low-side, bidirectional current-sensing circuit (Rev. B) | Feb. 01, 2019 | |
| White papers | Analog Engineer’s Pocket Reference Guide Fifth Edition (Rev. C) | Nov. 30, 2018 | |
| Technical articles | Designing tiny microphone circuits with the industry’s smallest op amp | Apr. 12, 2018 | |
| Technical articles | How to lay out a PCB for high-performance, low-side current-sensing designs | Feb. 06, 2018 | |
| Technical articles | Low-side current sensing for high-performance cost-sensitive applications | Jan. 22, 2018 | |
| White papers | The Signal e-book: A compendium of blog posts on op amp design topics | Mar. 28, 2017 | |
| More literature | Precision Amplifier Quickstart Kit brochure (Rev. A) | Jan. 13, 2015 |
Design & development
For additional terms or required resources, click any title below to view the detail page where available.Hardware development
AMPQUICKKIT-EVM
Description
The TI Precision Amplifier Quickstart Kit simplifies op amp selection, design, and evaluation with samples of six op amps and an evaluation module for prototyping surface-mount ICs. The kit is the perfect starting point for your amplifier designs.
You may also be interested in TI Precision Labs, the (...)
Features
The kit includes:
- Six samples: Three low-power, low-voltage amplifiers and three low-power, wide-supply amplifiers. See the table below for the complete list.
- DIP Adapter Evaluation Module (DIP-ADAPTER-EVM) for prototyping surface-mount ICs. The EVM supports the following package types: D or U (...)
DIP-ADAPTER-EVM
Description
Speed up your op amp prototyping and testing with the DIP-Adapter-EVM, which provides a fast, easy and inexpensive way to interface with small, surface-mount ICs. You can connect any supported op amp using the included Samtec terminal strips or wire them directly to existing circuits.
The (...)
Features
- Simplifies prototyping of SMT IC’s
- Supports 6 common package types
- Low Cost
Description
The DIYAMP-EVM is a unique evaluation module (EVM) family that provides engineers and do it yourselfers (DIYers) with real-world amplifier circuits, enabling you to quickly evaluate design concepts and verify simulations. It is available in three industry-standard packages (SC70, SOT23, SOIC) and 12 (...)
Features
- 3 packages to choose from: SC70-5, SOT23-5 and SOIC-8
- 12 circuit configurations to choose from: Noninverting, Inverting, Active Filters, Difference Amp, Comparator and more!
- Dual and single supply configurations
- PCB designed for High performance: Optimized for each function
- Multiple interface options (...)
Design tools & simulation
SBOM775A.ZIP (4 KB) - TINA-TI Spice Model
SBOM776A.ZIP (127 KB) - TINA-TI Reference Design
SBOMAQ3.ZIP (3 KB) - PSpice Model
PSPICE-FOR-TI — 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 (...)
Features
- Leverages Cadence PSpice Technology
- Preinstalled library with a suite of digital models to enable worst-case timing analysis
- Dynamic updates ensure you have access to most current device models
- Optimized for simulation speed without loss of accuracy
- Supports simultaneous analysis of multiple products
- (...)
TINA-TI — TINA-TI provides all the conventional DC, transient and frequency domain analysis of SPICE and much more. TINA has extensive post-processing capability that allows you to format results the way you want them. Virtual instruments allow you to select input waveforms and probe circuit nodes voltages (...)
ANALOG-ENGINEER-CALC — The Analog Engineer’s Calculator is designed to speed up many of the repetitive calculations that analog circuit design engineers use on a regular basis. This PC-based tool provides a graphical interface with a list of various common calculations ranging from setting op-amp gain with feedback (...)
Features
- Expedites circuit design with analog-to-digital converters (ADCs) and digital-to-analog converters (DACs)
- Noise calculations
- Common unit translation
- Solves common amplifier circuit design problems
- Gain selections using standard resistors
- Filter configurations
- Total noise for common amplifier configurations
- (...)
CIRCUIT060007 — This single-supply low-side, bidirectional current sensing solution can accurately detect load currents from –1A to 1A. The linear range of the output is from 110mV to 3.19V. Low-side current sensing keeps the common-mode voltage near ground, and is thus most useful in applications with large (...)
Features
- Single 5V supply with half-supply reference
- Input: -2.22mV to 2.27mV differential
- Output: 225mV - 4.72V
- Strain gauge resistance variation: 115 - 125 Ohms
- Gain: 1001V/V
SBOC500.ZIP (297 KB)
Reference designs
TIDA-01012 — Many products are now becoming connected through the Internet of Things (IoT), including test equipment such as digital multimeters (DMM). Enabled by Texas Instruments’ SimpleLink™ ultra-low power wireless microcontroller (MCU) platform, the TIDA-01012 reference design demonstrates (...)
Design files
-
download TIDA-01012 BOM.pdf (135KB) -
download TIDA-01012 Assembly Drawing.pdf (639KB) -
download TIDA-01012 PCB.pdf (1928KB) -
download TIDA-01012 CAD Files.zip (1908KB) -
download TIDA-01012 Gerber.zip (1021KB)
TIDA-01014 — The Internet of Things (IoT) revolution is efficiently connecting applications and instruments, enabling battery powered, wide scale very low power sensor deployment. New technologies, such as TI’s advanced sensor and low power connectivity devices, are enabling these instruments to be (...)
Design files
-
download TIDA-01014 BOM.pdf (165KB) -
download TIDA-01014 Assembly Drawing.pdf (636KB) -
download TIDA-01014 PCB.pdf (4433KB) -
download TIDA-01014 CAD Files.zip (1901KB) -
download TIDA-01014 Gerber.zip (1229KB)
TIPD116 — This TI Verified Design is for Electrocardiography (ECG), the measurement of the electrical activity of the heart, a method that requires a precision analog front end instrumentation gain stage, filtering, and high resolution digital conversion. This design features the methodology for achieving a (...)
Design files
-
download TIPD116 BOM.pdf (78KB) -
download TIPD116 Gerber.zip (1295KB)
TIPD145 — Single supply rail-to-rail amplifiers are commonly used in analog systems. In some cases it is important to have an amplifier output that drives very close to GND (i.e. a few microvolts). However, no amplifier can inherently drive this close to GND. This TI Precision Design shows a (...)
Design files
-
download TIPD145 BOM.pdf (185KB)
TIPD148 — Translating a ±15V signal to a single supply 5V signal for use with an ADC is a common circuit requirement. This Dual Supply to Single Supply Amplifier circuit design translates a ±15V signal to a 0V to 5V signal. The output of this design will not be outside of 0-5V (...)
Design files
-
download TIPD148 BOM.pdf (194KB)
TIPD114 — This TI Verified Design provides results of a low power, low throughput use case of ADS8881. One of the ways to reduce power for a low throughput application is to select a high throughput (1 MSPS) part and run it at low speed. The power consumed by ADS8881 is 55uW for 10kSPS. The reference drive (...)
Design files
-
download TIPD114 BOM.pdf (59KB) -
download TIPD114 Gerber.zip (1962KB)
CAD/CAE symbols
| Package | Pins | Download |
|---|---|---|
| SC70 (DCK) | 5 | View options |
| SOT-23 (DBV) | 5 | View options |
Ordering & quality
Support & training
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