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Product details

Parameters

Architecture FET / CMOS Input, Voltage FB Number of channels (#) 1 Total supply voltage (Min) (+5V=5, +/-5V=10) 2.2 Total supply voltage (Max) (+5V=5, +/-5V=10) 5.5 GBW (Typ) (MHz) 50 BW @ Acl (MHz) 50 Acl, min spec gain (V/V) 1 Slew rate (Typ) (V/us) 25 Vn at flatband (Typ) (nV/rtHz) 4.5 Vn at 1 kHz (Typ) (nV/rtHz) 4.5 Iq per channel (Typ) (mA) 4.6 Vos (offset voltage @ 25 C) (Max) (mV) 0.2 Rail-to-rail In, Out Features Zero Crossover Rating Catalog Operating temperature range (C) -40 to 125 CMRR (Typ) (dB) 120 Input bias current (Max) (pA) 10 Offset drift (Typ) (uV/C) 1 Output current (Typ) (mA) 65 2nd harmonic (dBc) 81 3rd harmonic (dBc) 93 @ MHz 1 open-in-new Find other High-speed op amps (GBW>=50MHz)

Package | Pins | Size

SOIC (D) 8 19 mm² 3.91 x 4.9 SOT-23 (DBV) 5 5 mm² 2.9 x 1.6 open-in-new Find other High-speed op amps (GBW>=50MHz)

Features

  • Gain Bandwidth: 50 MHz
  • Zerø-Crossover Distortion Topology:
    • Excellent THD+N: 0.0004%
    • CMRR: 100 dB (Minimum)
    • Rail-to-Rail Input and Output
      • Input 100 mV Beyond Supply Rail
  • Low Noise: 4.5 nV/√Hz at 100 kHz
  • Slew Rate: 25 V/µs
  • Fast Settling: 0.3 µs to 0.01%
  • Precision:
    • Low Offset: 100 µV
    • Low Input Bias Current: 0.2 pA
  • 2.2-V to 5.5-V Operation

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open-in-new Find other High-speed op amps (GBW>=50MHz)

Description

The OPAx365 zerø-crossover series, rail-to-rail, high-performance, CMOS operational amplifiers are optimized for very low voltage, single-supply applications. Rail-to-rail input or output, low-noise (4.5 nV/√Hz) and high-speed operation (50-MHz Gain Bandwidth) make these devices ideal for driving sampling analog-to-digital converters (ADCs). Applications include audio, signal conditioning, and sensor amplification. The OPA365 family of op amps are also well-suited for cell phone power amplifier control loops.

Special features include an excellent common-mode rejection ratio (CMRR), no input stage crossover distortion, high input impedance, and rail-to-rail input and output swing. The input common-mode range includes both the negative and positive supplies. The output voltage swing is within 10 mV of the rails.

The OPA365 (single version) is available in the micro-size SOT23-5 (SOT-5) and SOIC-8 packages. The OPA2365 (dual version) is offered in the SOIC-8 package. All versions are specified for operation from −40°C to +125°C. Single and dual versions have identical specifications for maximum design flexibility.

open-in-new Find other High-speed op amps (GBW>=50MHz)
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NEW OPA607 ACTIVE Low power, precision, 50 MHz decompensated CMOS operational amplifier This device has lower power (0.9 mA), lower noise (3.8 nV/rtHz) and lower drift(0.35uV/C)

Technical documentation

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Type Title Date
* Datasheet OPAx365 50-MHz, Zerø-Crossover, Low-Distortion, High CMRR, RRI/O, Single-Supply Operational Amplifier datasheet (Rev. F) Mar. 30, 2020
Application notes Increase Measurement Accuracy With HS Amps for Low-Side Shunt Current Monitoring (Rev. A) Aug. 26, 2019
Application notes Inverting circuit for high-to-low voltage level translation to drive ADC Jun. 15, 2019
Application notes Driving a low-voltage single-ended SAR ADC circuit with high-voltage input Jun. 10, 2019
Application notes Antialiasing filter circuit design for single-ended ADC input using fixed cutoff (Rev. A) Mar. 07, 2019
Application notes AN-31 amplifier circuit collection (Rev. C) Mar. 04, 2019
Application notes PWM generator circuit (Rev. A) Feb. 01, 2019
Application notes Circuit for differential output from a single-ended precision DAC Jan. 28, 2019
Technical articles How to reduce distortion in high-voltage, high-frequency signal generation for AWGs Oct. 30, 2018
Technical articles What are the advantages of using JFET-input amplifiers in high-speed applications? Jun. 18, 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
More literature The Signal e-book: A compendium of blog posts on op amp design topics Mar. 28, 2017
Application notes Zero-crossover Amplifiers: Features and Benefits (Rev. A) Feb. 09, 2017
More literature The Best of Baker's Best – Amplifiers eBook Jan. 14, 2014
Application notes Low Power Input and Reference Driver Circuit for ADS8318 and ADS8319 Jun. 24, 2009

Design & development

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

Hardware development

EVALUATION BOARDS Download
document-generic User guide
$149.00
Description
The ADS7049-Q1EVM-PDK is a platform for evaluating the performance of the ADS7049-Q1 SAR ADC, which is a single-ended input, 12-bit, 2-MSPS device. The valuation kit includes the ADS7049-Q1 EVM board and the precision host interface (PHI) controller board that enables the accompanying computer (...)
Features
  • Hardware and software required for diagnostic testing as well as accurate performance evaluation of the ADS7049-Q1 SAR ADC 
  • No external power supply necessary. 
  • USB powered—no external power supply is required. 
  • The PHI controller that provides a convenient communication interface to the ADS7049-Q1 ADC (...)

Design tools & simulation

SIMULATION MODELS Download
SBOC133.ZIP (3 KB) - PSpice Model
SIMULATION MODELS Download
SBOC134A.TSC (66 KB) - TINA-TI Reference Design
SIMULATION MODELS Download
SBOM203.TSM (5 KB) - TINA-TI Spice Model
SIMULATION TOOLS Download
SPICE-based analog simulation program
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 (...)
document-generic User guide
CALCULATION TOOLS Download
Analog engineer's calculator
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
  • (...)
CALCULATION TOOLS Download
Voltage Divider Determines A Set of Resistors for a Voltage Divider
VOLT-DIVIDER-CALC VOLT-DIVIDER-CALC quickly determines a set of resistors for a voltage divider. This KnowledgeBase Javascript utility can be used to find a set of resistors for a voltage divider to achieve the desired output voltage. This calculator can also be used to design non-inverting attentuation circuits.

(...)

DESIGN TOOLS Download
SBAM419.ZIP (22 KB)

Reference designs

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TIDM-1022 — This reference design illustrates a digital control method to significantly improve Boost Power Factor Correction (PFC) converter performance such as the efficiency and Total Harmonic Distortion (THD) under light load condition where efficiency and THD standards are difficult to meet. This is (...)
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TIDEP0035 Implementation of HIPERFACE DSL Master protocol on Industrial Communication Sub-System (PRU-ICSS). The two wire interface allows for integration of position feedback wires into motor cable.  Complete solution consists of AM437x PRU-ICSS firmware and TIDA-00177 transceiver reference design.
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EnDat 2.2 System Reference Design
TIDEP0050 The TIDEP0050 TI Design implements the EnDat 2.2 Master protocol stack and hardware interface solution based on the HEIDENHAIN EnDat 2.2 standard for position or rotary encoders. The design is composed of the EnDat 2.2 Master protocol stack, half-duplex communications using RS485 transceivers and (...)
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PMP4435 The PMP4435 is a DC-DC isolated digital module with GaN mosfet reference design targeted for industrial and telecom applications. The DC input range is 36V-60V, with 12V typical and the output is 12V/5A. An digital controller UCD3138A is used in the design. The efficiency is up to 95.8% with good (...)
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Three-Phase BLDC / PMSM Motor Drive with High-Performance Microcontrollers Reference Design
TIDM-RM46XDRV8301KIT This TI design describes a motor control evaluation kit for spinning 3-phase brushless DC and brushless AC (BLAC) - often referred to as permanent magnet synchronous (PMSM) – motors with example of sensorless Field Oriented / Vector Control (FOC). The implementation leverages the DRV8301 (...)
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Capacitive Load Drive Verified Reference Design Using an Isolation Resistor
TIPD128 This TI Verified Design implements a variety of op amps driving capacitive loads from 100pF to 1uF using a isolation resistor.  The OPA192 is highlighted due to its ability to drive large capacitive loads with small isolation resistors.
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Design files
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TIDM-SOLAR-DCDC This design is a digitally-controlled, solar DC/DC converter with maximum power point tracking (MPPT), for use in central or string solar inverters. It is a companion to the TI Design TIDM-SOLAR-ONEPHINV, a grid-tied, single phase, DC/AC inverter. Together, the TIDM-SOLAR-DCDC and the (...)
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CAD/CAE symbols

Package Pins Download
SOIC (D) 8 View options
SOT-23 (DBV) 5 View options

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