Core specifications
OPA376AIDBVR belongs to TI's e-trim™ series of precision operational amplifiers, manufactured using CMOS technology. It is a single-channel, rail-to-rail input and output amplifier.Its core parameters are as follows:
Voltage and bandwidth: Power supply voltage range2.2V to 5.5V(single supply) or ±1.1V to ±2.75V (dual supply), gain bandwidth product5.5MHz, slew rate2V/µs。
Accuracy index:Typical value of input offset voltage5µV(25µV maximum), offset voltage temperature drift0.32µV/℃, the input bias current is only0.2pA。
Noise and power consumption: Noise density7.5nV/√Hz(@1kHz), 0.1Hz to 10Hz noise0.8µVPP, quiescent current typical value760µA。
Packaging and temperature:AdoptSOT-23-5Package (2.90mm×1.60mm), operating temperature range-40℃ to +125℃。
The device also has excellent common-mode rejection ratio (CMRR typical value 90dB) and power supply rejection ratio (PSRR typical value 106.02dB), which is particularly outstanding in applications that are directly powered by batteries and do not require voltage regulation.
Core advantages: the trinity of precision, low noise and low power consumption
The core value of OPA376AIDBVR in product design is concentrated in the combination of precision + low noise + low power consumption.The ultra-low offset voltage of 5µV and the temperature drift characteristics of 0.32µV/℃ enable it to maintain extremely high DC accuracy in sensor signal conditioning and precision measurement.The low noise density of 7.5nV/√Hz and the 0.1Hz to 10Hz noise of 0.8µVPP enable it to effectively retain weak signals in audio equipment and low-noise amplifier circuits.
The low quiescent current of 760µA combined with the wide supply range of 2.2V to 5.5V makes it ideal for battery-powered portable devices and handheld test instruments.The rail-to-rail input and output characteristics further expand the dynamic range of the signal, ensuring that the full-scale input range of the ADC can still be fully utilized under low-voltage power supply.
Typical application scenarios
This chip has a wide range of applications and is especially suitable for precision signal chain designs that have comprehensive requirements on accuracy, noise and power consumption.ADC buffers and driversIt is one of its core application directions. When driving a high-resolution SAR ADC, the low noise and low offset characteristics of OPA376 can ensure that no additional errors are introduced and provide a pure signal source for the ADC.Sensor signal conditioningIn terms of front-end amplification circuits for thermocouples, RTDs, strain gauges and pressure sensors, low bias current and low offset voltage enable them to accurately amplify weak sensor signals.Audio equipment and medical instrumentsThis chip is also widely used in medical equipment such as portable electrocardiographs, blood glucose meters, and oximeters. Its low-noise characteristics ensure the fidelity of weak bioelectric signals.Handheld Test Equipment and Active Filtering, in the design of multimeters, portable oscilloscopes and various types of active filters, the small package and low power consumption advantages of OPA376 make it a priority universal op amp solution.
Related models and alternatives
OPA376AIDBVR belongs to the TI OPAx376 series. The same series and cross-brands provide a wealth of branch choices for project selection.
Same series single channel but different packages：OPA376AIDBVTIt is packaged in SOT-23-5 and taped (3000 pieces/roll), and the electrical parameters are exactly the same.OPA376AIDRIt is packaged in SOIC-8 and is suitable for scenarios that require larger pads or manual soldering debugging.OPA376AIDCKRIt is an SC70-5 ultra-small package, suitable for compact equipment with extreme requirements on PCB area.
Multi-channel version of the same series：OPA2376It is a dual-channel version and is available in SOIC-8, VSSOP-8 and DSBGA-8 packages.OPA4376The four-channel version is available in TSSOP-14 package.
Car-grade version of the same series：OPA376AQDBVRQ1It is an automotive-grade model that has passed AEC-Q100 certification and is suitable for automotive electronics and harsh environment applications.
Complete replacement model of the same series：OPA376AIDBVRG4andOPA376AIDBVTG4It is a version with NiPdAu lead coating. Its electrical performance is exactly the same as OPA376AIDBVR, and it can be directly replaced by pin-to-pin.
Cross-series performance comparison selection：OPA365AIDBVRIt is a 50MHz high-speed version (25V/µs slew rate), suitable for applications requiring higher bandwidth and faster response speed.OPA378AIDBVRIt is a 900kHz zero-drift version, suitable for applications that require extremely high DC accuracy but low bandwidth requirements.MCP6286T-E/OTIt is Microchip's similar low-power precision operational amplifier and can be used as a cross-brand alternative.
write at the end
With ultra-low offset voltage of 5µV, low noise density of 7.5nV/√Hz, low quiescent current of 760µA and rail-to-rail input and output characteristics, Texas Instruments OPA376AIDBVR provides a cost-effective operational amplifier solution in precision signal chain applications such as ADC buffering, sensor signal conditioning, audio equipment and portable medical instruments.The excellent DC accuracy and AC performance brought by e-trim™ technology allow this chip to demonstrate extremely high engineering maturity in battery-powered precision equipment.
As a chip agent distributor that has been deeply involved in the electronic components industry since 2011, Shenzhen Hongmai Electronics Co., Ltd. has long-term TIOPA376AIDBVR and OPA376 series full-model precision operational amplifiers are in stock. We also supply OPA2376 (dual channels), OPA4376 (four channels), OPA376AIDBVT (same package, different packages) with different channel numbers and package versions. We can also provide cross-series performance comparison selection suggestions for OPA365, OPA378, etc., and support factory batch direct shipment, small batch samples and technical selection assistance.If you need to inquire about prices or need to know the selection suggestions of different packages and channel numbers in the same series, please feel free to contact us at any time (tel: 0755-23815611, QQ 2355878270).Shenzhen Hongmai Electronics Co., Ltd.
