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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) 0.05 GBW (Typ) (MHz) 0.9 Slew rate (Typ) (V/us) 0.4 Rail-to-rail In, Out Offset drift (Typ) (uV/C) 0.1 Iq per channel (Typ) (mA) 0.125 Vn at 1 kHz (Typ) (nV/rtHz) 20 CMRR (Typ) (dB) 112 Rating Catalog Operating temperature range (C) -40 to 125 Input bias current (Max) (pA) 550 Output current (Typ) (mA) 30 Features EMI Hardened, Small Size, Zero Drift Architecture CMOS open-in-new Find other Precision op amps (Vos<1mV)

Package | Pins | Size

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

  • LOW NOISE
    • 0.4µVPP, 0.1Hz to 10Hz
    • 20nV/√Hz at 1kHz
  • ZERØ-DRIFT SERIES
    • LOW OFFSET VOLTAGE: 20µV
    • LOW OFFSET DRIFT: 0.1µV/°C
  • QUIESCENT CURRENT: 125µA
  • GAIN BANDWIDTH: 900kHz
  • RAIL-TO-RAIL INPUT/OUTPUT
  • EMI FILTERING
  • SUPPLY VOLTAGE: 2.2V to 5.5V
  • microSIZE PACKAGES: SC70 and SOT23
  • APPLICATIONS
    • PORTABLE MEDICAL DEVICES
      • GLUCOSE METERS
      • OXYGEN METERING
      • HEART RATE MONITORS
    • WEIGH SCALES
    • BATTERY-POWERED INSTRUMENTS
    • THERMOPILE MODULES
    • HANDHELD TEST EQUIPMENT
    • SENSOR SIGNAL CONDITIONING

All trademarks are the property of their respective owners.

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

Description

The OPA378 and OPA2378 represent a new generation of Zerø-Drift, microPOWER operational amplifiers that use a proprietary auto-calibration technique to provide minimal input offset voltage (20µV) and offset voltage drift (0.1µV/°C). The combination of low input voltage noise, high gain bandwidth (900kHz), and low power (150µA max) enable these devices to achieve optimum performance for low-power precision applications. In addition, the excellent PSRR performance, coupled with a wide input supply range of 2.2V to 5.5V and rail-to-rail input and output, makes it an outstanding choice for single-supply applications that run directly from batteries without regulation.

The OPA378 (single version) is available in both a microSIZE SC70-5 and a SOT23-5 package. The OPA2378 (dual version) is offered in a SOT23-8 package. 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
$149.00
Description

The ADS9120 evaluation module (EVM) performance demonstration kit (PDK) is a platform for evaluating the performance of the ADS9120 successive-approximation register analog-to-digital converter (SAR ADC). The ADS9120EVM-PDK includes the ADS9120 EVM board, the PHI controller board, and accompanying (...)

Features
  • Includes hardware and software required for diagnostic testing, as well as accurate performance evaluation of the ADS9120 ADC
  • No external power supply required
  • Ships with PHI EVM controller that provides a convenient interface to the EVM over USB 2.0 (or higher) for power delivery, as well as (...)
EVALUATION BOARDS Download
document-generic User guide
Description

The ADS7042 Ultra-Low Power Data Acquisition BoosterPack is a stand-alone system that converts analog sensor data into digital SPI data using the TI ADS7042 Successive Approximation Register Analog-to-Digital Converter.  This BoosterPack has been designed to be compatible with the TI (...)

Features
  • Designed using the ADS7042 precision analog-to-digital converter, OPA316 precision ADC driver, and REF3330 precision voltage reference
  • Nanowatt power consumption of the ADS7042 ADC when sampling at 1 KSPS
  • ADC sampling rates betwen 1 KSPS and 1 MSPS
  • SMA jack for optional external analog signal input
  • (...)
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
$99.00
Description

LEDSPIMCUEVM-879 is the MCU control board for the TPS92518EVM-878 (TPS92518 Evaluation Module). This board is the companion board which enables software based controls using the TPS92518 Software Package (GUI). This board allows evaluation of all TPS92518 features/functions by translating commands (...)

Features
  • MCU Control board for TPS92518EVM-878
  • MCU generates SPI communication and Enable and PWM dimming signals
  • Provides complete computer (via GUI) to LED driver control
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
SBOM390D.ZIP (9 KB) - TINA-TI Spice Model
SIMULATION MODELS Download
SBOM391D.TSC (3329 KB) - TINA-TI Reference Design
SIMULATION MODELS Download
SBOM392D.ZIP (14 KB) - PSpice 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
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

Reference designs

REFERENCE DESIGNS Download
2-kW industrial AC/DC battery charger reference design with 92% full-load efficiency
PMP8740 — This reference design is a module that can be set as standard power supply or a battery charger. The output voltage ranges from 0 V to 32 V at a maximum current of 62.5 A. It consists of four boards, a boost PFC, a phase shift full bridge, a small daughter board (hosting the microcontroller), and a (...)
document-generic Schematic document-generic User guide
REFERENCE DESIGNS Download
ADC Voltage Reference Buffer Optimization Reference Design for High Performance DAQ Systems
TIDA-01055 — The TIDA-01055 reference design for high performance DAQ Systems optimizes the ADC reference buffer to improve SNR performance and reduce power consumption with the TI OPA837 high-speed op amp. This device is used in a composite buffer configuration and provides a 22% power improvement over (...)
document-generic Schematic document-generic User guide
REFERENCE DESIGNS Download
Reference Design Maximizing Signal Dynamic Range for True 10 Vpp Differential Input to 20 bit ADC
TIDA-01057 — This reference design is designed for high performance data acquisition(DAQ) systems to improve the dynamic range of 20 bit differential input ADCs. Many DAQ systems require the measurement capability at a wide FSR (Full Scale Range) in order to obtain sufficient signal dynamic range. Many earlier (...)
document-generic Schematic document-generic User guide
REFERENCE DESIGNS Download
18-bit, 2-Msps Isolated Data Acquisition Reference Design to Achieve Maximum SNR and Sampling Rate
TIDA-00732 This “18-bit, 2-Msps Isolated Data Acquisition Reference Design to achieve maximum SNR and sampling rate”  illustrates how to overcome performance-limiting challenges typical of isolated data acquisition system design:
  • Maximizing sampling rate by minimizing propagation delay introduced by digital (...)
document-generic Schematic document-generic User guide

CAD/CAE symbols

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

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