Quad, single-supply, rail-to-rail, high speed, low noise operational amplifier
Product details
Parameters
Package | Pins | Size
Features
- 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
Description
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.
Technical documentation
= Featured
| Type | Title | Date | |
|---|---|---|---|
| * | Datasheet | OPAx350 High-Speed, Single-Supply, Rail-to-Rail Operational Amplifiers MicroAmplifier Series datasheet (Rev. D) | Dec. 21, 2015 |
| 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 | |
| Technical articles | How to make precision measurements on a nanopower budget, part 1: DC gain in nanopower op amps | Dec. 06, 2017 | |
| Technical articles | “Trust, but verify” SPICE model accuracy, part 6: voltage noise and current noise | Dec. 04, 2017 | |
| White papers | Charging stations: Toward an EV support infrastructure | May 09, 2017 | |
| More literature | The Signal e-book: A compendium of blog posts on op amp design topics | Mar. 28, 2017 | |
| Application notes | OPA350, OPA2350, OPA4350 EMI Immunity Performance (Rev. A) | Nov. 02, 2012 |
Design & development
For additional terms or required resources, click any title below to view the detail page where available.Hardware development
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 (...)
Description
The Universal OPAMPEVM is a series of general purpose blank circuit boards that simplify prototyping circuits for a variety of IC package types. The evaluation module board design allows many different circuits to be constructed easily and quickly. Five models are offered with each targeted for (...)
TIEVM-VIENNARECT
Description
The Vienna rectifier power topology is used in high power three phase power factor (AC-DC) applications such as off-board electric vehicle (EV) chargers and telecom rectifiers. This design illustrates a method to control the power stage using C2000™ microcontrollers. This design uses an (...)
Features
Hardware Features
- EVM with interface to accept HSEC180 controlCARDs
- Greater than 98% peak efficiency
- Less than 2% THD at full load and low line
- Up to 2.4KW design with three phase 400Vac VL-L Input
- Hardware Files are in DigitalPower SDK at solutions\tidm_1000
Software Features
- Free download of Code (...)
Description
To get started developing with this controlCARD:
Step 1: Buy the controlCard
Step 2: Follow the get started section
TMDSCNCD28379D is an HSEC180 controlCARD based evaluation and development tool for the F2837xD, F2837xS, and F2807x series in the TI MCU. controlCARDs are ideal to use for (...)
Features
Hardware Features
- TMDSCNCD28379D: TMS320F28379D HSEC180 based controlCARD
- Isolated XDS100v2 USB-to-JTAG Debug Probe enables real-time in-system programming and debugging
- Standard 180-pin HSEC interface
- Analog I/O, digital I/O and JTAG signals at card interface
- USB Host connector
- SDCard Slot
- Hardware Files (...)
TIEVM-HV-1PH-DCAC
Description
This reference design implements single phase inverter (DC-AC) control using the C2000™ F2837xD and F28004x microcontrollers. Design supports two modes of operation for the inverter. First is voltage source mode using an output LC filter, this control mode is typically used in Uninterrupted (...)
Features
- powerSUITE supported Voltage Source Inverter and Grid Connected Inverter Design
- Peak 98% efficiency in Voltage Source Mode and <4% THD in case of non linear loads
- Input 380V DC, Output 220Vrms 50Hz or 110Vrms 60Hz and 600VA Max
- Hardware Files are in DigitalPower SDK at solutions\tidm_hv_1ph_dcac
TMDSDOCK28379D
Description
TMDSDOCK28379D is a HSEC180 controlCARD based evaluation and development tool for the C2000™ Delfino™ F2837x and Piccolo F2807x series of microcontroller products. The Docking Station provides power to the controlCARD and has a bread-board area for prototyping. Access to the key device (...)
Features
Hardware Features
- TMDSCNCD28379D: TMS320F28379D HSEC180 based controlCARD
- Isolated XDS100v2 USB-to-JTAG Debug Probe enables real-time in-system programming and debugging
- Bread-board like baseboard with HSEC180 controlCARD female connector
- Header pin access to key MCU signals
- Breadboard area for (...)
Design tools & simulation
SBOC202E.TSC (324 KB) - TINA-TI Reference Design
SBOM071C.ZIP (15 KB) - PSpice Model
SBOM280D.ZIP (9 KB) - TINA-TI Spice Model
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
- (...)
OPAMP-NOISECALC
— This folder contains three tools to help in understandning and managing noise in cicuits. The included tools are:
- A noise generator tool - This is a Lab View 4-Run Time executable that generates Gaussian white noise, uniform white noise, 1/f noise, short noise, and 60Hz line noise. Temporal data (...)
CIRCUIT060001
— This single–supply, low–side, current sensing solution accurately detects load current up to 1A and converts it to a voltage between 50mV and 4.9V. The input current range and output voltage range can be scaled as necessary and larger supplies can be used to accommodate larger swings.
Features
- Senses Temperature between 25°C - 50°C
- Output: 0.05V - 3.25V
- Single 3.3V Supply with half-supply reference
CIRCUIT060002
— This temperature sensing circuit uses a resistor in series with a negative–temperature–coefficient (NTC) thermistor to form a voltage divider, which has the effect of producing an output voltage that is linear over temperature. The circuit uses an op amp in a non–inverting (...)
Features
- Senses Temperature between 25°C - 50°C
- Output: 0.05V - 3.25V
- Single 3.3V Supply with half-supply reference
CIRCUIT060003
— This temperature sensing circuit uses a resistor in series with a positive–temperature–coefficient (PTC) thermistor to form a voltage–divider, which has the effect of producing an output voltage that is linear over temperature. The circuit uses an op amp in a non–inverting (...)
Features
- Senses Temperature between 0°C - 50°C
- Output: 0.05V - 3.25V
- Single 3.3V Supply with half-supply reference
CIRCUIT060004
— This two stage amplifier design amplifies and filters the signal from a passive infrared (PIR) sensor. The circuit includes multiple low–pass and high–pass filters to reduce noise at the output of the circuit to be able to detect motion at long distances and reduce false triggers. This (...)
Features
- Single 5V Supply
- Passes frequencies between 0.7Hz - 10Hz
- AC Gain: 90dB
CIRCUIT060005
— This single–supply, high–side, low–cost current sensing solution detects load current between 50mA and 1A and converters it to an output voltage from 0.25V to 5V. High–side sensing allows for the system to identify ground shorts and does not create a ground disturbance on the load.
Features
- Single 36V supply
- Input: 50mA to 1A
- Output: 0.25V to 5V
CIRCUIT060006
— A strain gauge is a sensor whose resistance varies with applied force. To measure the variation in resistance, the strain gauge is placed in a bridge configuration. This design uses a 2 op amp instrumentation circuit to amplify a differential signal created by the change in resistance of a strain (...)
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
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
CIRCUIT060008
— This absolute value circuit can turn alternating current (AC) signals to single polarity signals. This circuit functions with limited distortion for ±10-V input signals at frequencies up to 50kHz and for signals as small as ±25mV at frequencies up to 1kHz.
Features
- 30V Split supply with ground reference
- Input: +/-25mV to +/-10V
- Output: 25mV to 10V
CIRCUIT060009
— 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 (...)
Features
- 5V Split supply
- Input: +/-0.2mVpp to +/-4Vpp
- Output: 0.1V to 2V
CIRCUIT060010
— This circuit utilizes a triangle wave generator and comparator to generate a 500 kHz pulse-width modulated (PWM) waveform with a duty cycle that is inversely proportional to the input voltage. An op amp and comparator generate a triangle waveform which is applied to the inverting input of a second (...)
Features
- 5V Single supply with half-supply reference
- Input: -2V to 2V
- Output: 0V to 5V
Reference designs
TIDM-1000
— Vienna rectifier power topology is used in high power three phase power factor (AC-DC) applications such as off board EV chargers and telecom rectifiers. Control design of the rectifier can be complex. This design illustrates a method to control the power stage using C2000™ microcontrollers (...)
Design files
-
download Vienna Rectifier-Based Three Phase Power Factor Correction Assembly Drawing (Rev. A).pdf (663KB) -
download Vienna Rectifier-Based Three Phase Power Factor Correction Using C2000™ MCUs BOM (Rev. A).pdf (114KB) -
download Vienna Rectifier-Based Three Phase Power Factor Correction CAD Files (Rev. A).zip (4380KB) -
download Vienna Rectifier-Based Three Phase Power Factor Correction Gerber (Rev. A).zip (2578KB) -
download Vienna Rectifier-Based Three Phase Power Factor Correction Using C2000™ MCUs PCB (Rev. A).pdf (3956KB)
TIDM-HV-1PH-DCAC
— This reference design implements single-phase inverter (DC-AC) control using the C2000™ F2837xD and F28004x microcontrollers. Design supports two modes of operation for the inverter. First is the voltage source mode using an output LC filter. This control mode is typically used in (...)
TIDA-01606
— This verified reference design provides an overview on how to implement a three-level three-phase SiC based DC:AC grid-tie inverter stage.Higher switching frequency of 50KHz reduces the size of magnetics for the filter design and enables higher power density. The use of SiC MOSFETs with switching (...)
Design files
TIDA-010039
— This reference design provides an overview on how to implement a three-level, three-phase, SiC-based AC/DC converter with bi-directional functionality. A high switching frequency of 50 kHz reduces the size of magnetics for the filter design and as a result a higher power density. SiC MOSFETs with (...)
Design files
CAD/CAE symbols
| Package | Pins | Download |
|---|---|---|
| SOIC (D) | 14 | View options |
| SSOP (DBQ) | 16 | View options |
Ordering & quality
Support & training
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Training series
View all TI training and videosVideos
10kW 3-Phase 3-Level SiC Grid Tie Inverter Reference Design
Highlights TI's verified reference design that provides an overview on how to implement a three-level, three phase SiC based DC:AC grid-tie inverter stage
Posted: 07-Jan-2018
Duration: 04:59
