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Product details

Parameters

Number of channels (#) 1 Total supply voltage (Max) (+5V=5, +/-5V=10) 5.5 Total supply voltage (Min) (+5V=5, +/-5V=10) 2.2 Vos (offset voltage @ 25 C) (Max) (mV) 1 GBW (Typ) (MHz) 5.5 Slew rate (Typ) (V/us) 2 Rail-to-rail In, Out Offset drift (Typ) (uV/C) 0.32 Iq per channel (Typ) (mA) 0.76 Vn at 1 kHz (Typ) (nV/rtHz) 7.5 CMRR (Typ) (dB) 90 Rating Catalog Operating temperature range (C) -40 to 125 Input bias current (Max) (pA) 10 Output current (Typ) (mA) 30 Features EMI Hardened, Small Size Architecture CMOS open-in-new Find other Precision op amps (Vos<1mV)

Package | Pins | Size

SOIC (D) 8 19 mm² 4.9 x 3.9 SOT-23 (DBV) 5 5 mm² 2.9 x 1.6 SOT-SC70 (DCK) 5 4 mm² 2 x 2.1 open-in-new Find other Precision op amps (Vos<1mV)

Features

  • GAIN BANDWIDTH PRODUCT: 5.5MHz
  • LOW NOISE: 7.5nV/√Hz at 1kHz
  • OFFSET VOLTAGE: 1mV (max)
  • INPUT BIAS CURRENT: 0.2pA
  • RAIL-TO-RAIL OUTPUT
  • UNITY-GAIN STABLE
  • EMI INPUT FILTERING
  • QUIESCENT CURRENT: 0.76mA/ch
  • SUPPLY VOLTAGE: 2.2V to 5.5V
  • SMALL PACKAGES:
    SC70, SOT23, and MSOP
  • APPLICATIONS
    • PHOTODIODE PREAMP
    • PIEZOELECTRIC SENSOR PREAMP
    • SENSOR SIGNAL CONDITIONING
    • AUDIO EQUIPMENT
    • ACTIVE FILTERS

    All trademarks are the property of their respective owners.

    open-in-new Find other Precision op amps (Vos<1mV)

    Description

    The OPA377 family of operational amplifiers are wide-bandwidth CMOS amplifiers that provide very low noise, low input bias current, and low offset voltage while operating on a low quiescent current of 0.76mA (typ).

    The OPA377 op amps are optimized for low-voltage, single-supply applications. The exceptional combination of ac and dc performance make them ideal for a wide range of applications, including small signal conditioning, audio, and active filters. In addition, these parts have a wide supply range with excellent PSRR, making them attractive for applications that run directly from batteries without regulation.

    The OPA377 is available in the SC70-5, SOT23-5, and SO-8 packages. The dual OPA2377 is offered in the SO-8 and MSOP-8, and the quad OPA4377 in the TSSOP-14 packages. All versions are specified for operation from –40°C to +125°C.

    open-in-new Find other Precision op amps (Vos<1mV)
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    Technical documentation

    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
    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
    EVALUATION BOARDS Download
    document-generic User guide
    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 (...)
    EVALUATION BOARDS Download
    document-generic User guide
    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 (...)

    Design tools & simulation

    SIMULATION MODELS Download
    SBOM399A.ZIP (42 KB) - PSpice Model
    SIMULATION MODELS Download
    SBOM400A.ZIP (7 KB) - TINA-TI Spice Model
    SIMULATION MODELS Download
    SBOM401A.TSC (161 KB) - TINA-TI Reference Design
    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
    Noise Calculator, Generator and Examples
    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 (...)
    DESIGN TOOLS Download
    Single-supply, low-side, unidirectional current-sensing circuit
    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.
    document-generic User guide
    Features
    • Senses Temperature between 25°C - 50°C 
    • Output: 0.05V - 3.25V 
    • Single 3.3V Supply with half-supply reference
    DESIGN TOOLS Download
    Temperature sensing with NTC thermistor circuit
    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 (...)
    document-generic User guide
    Features
    • Senses Temperature between 25°C - 50°C 
    • Output: 0.05V - 3.25V 
    • Single 3.3V Supply with half-supply reference
    DESIGN TOOLS Download
    Temperature sensing with PTC thermistor circuit
    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 (...)
    document-generic User guide
    Features
    • Senses Temperature between 0°C - 50°C 
    • Output: 0.05V - 3.25V 
    • Single 3.3V Supply with half-supply reference
    DESIGN TOOLS Download
    Low-noise and long-range PIR sensor conditioner circuit
    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 (...)
    document-generic User guide
    Features
    • Single 5V Supply 
    • Passes frequencies between 0.7Hz - 10Hz 
    • AC Gain: 90dB
    DESIGN TOOLS Download
    High-side current sensing with discrete difference amplifier circuit
    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.
    document-generic User guide
    Features
    • Single 36V supply 
    • Input: 50mA to 1A 
    • Output: 0.25V to 5V
    DESIGN TOOLS Download
    Bridge amplifier circuit
    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 (...)
    document-generic User guide
    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
    DESIGN TOOLS Download
    Low-side, bidirectional current-sensing circuit
    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 (...)
    document-generic User guide
    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
    DESIGN TOOLS Download
    Full-wave rectifier circuit
    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.
    document-generic User guide
    Features
    • 30V Split supply with ground reference 
    • Input: +/-25mV to +/-10V 
    • Output: 25mV to 10V
    DESIGN TOOLS Download
    Half-wave rectifier circuit
    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
    DESIGN TOOLS Download
    PWM generator circuit
    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 (...)
    document-generic User guide
    Features
    • 5V Single supply with half-supply reference 
    • Input: -2V to 2V 
    • Output: 0V to 5V

    CAD/CAE symbols

    Package Pins Download
    SC70 (DCK) 5 View options
    SOIC (D) 8 View options
    SOT-23 (DBV) 5 View options

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