Texas Instruments OPA140AIDBVR

Overview

OPA140AIDBVR from Texas Instruments is a single-channel precision JFET-input operational amplifier designed for low-noise, low-bias-current analog signal conditioning. It combines high precision, 11 MHz bandwidth, rail-to-rail output swing, and wide supply operation, making it suitable for sensor interfaces, precision filters, data acquisition front ends, and high-impedance measurement circuits.

As a precision analog amplifier, OPA140AIDBVR helps buffer, amplify, and condition small analog signals before they are routed to ADCs, DACs, control circuits, or measurement processors. For engineers reviewing the OPA140AIDBVR datasheet, OPA140AIDBVR pinout, OPA140AIDBVR application, or OPA140AIDBVR equivalent, this device is a compact SOT-23 solution for precision industrial and instrumentation designs.

Technical Context

In an analog signal chain, OPA140AIDBVR is typically placed between a high-impedance sensor, analog source, filter network, or reference circuit and the next conversion or control stage. Its JFET input architecture provides very low input bias current, which is important when working with photodiodes, high-value resistive sensors, pH probes, precision filters, and other high-source-impedance circuits.

The amplifier supports single-supply operation from 4.5 V to 36 V and dual-supply operation from ±2.25 V to ±18 V, allowing it to work in both modern single-supply ADC systems and traditional dual-supply precision analog equipment. Its rail-to-rail output capability helps maximize usable signal swing when driving ADC inputs or downstream analog stages.

With low voltage noise, low offset voltage, and strong common-mode rejection, OPA140AIDBVR is well suited for precision signal conditioning where stability, low distortion, and accurate small-signal reproduction are required.

Key Specifications

Pinout & Package

The OPA140AIDBVR pinout is provided in a 5-pin SOT-23 package, offering a compact layout option for single-channel precision amplifier circuits. The main pins include non-inverting input, inverting input, output, positive supply, and negative supply or ground connection depending on the supply configuration.

For PCB layout, the input traces should be kept short, clean, and away from switching nodes or high-current power paths. High-impedance input nodes should be guarded where needed, and feedback components should be placed close to the amplifier pins to reduce parasitic capacitance, leakage, and noise pickup. Local supply bypass capacitors should be placed near the V+ and V- pins to maintain stable operation.

Key Features

• JFET input architecture supports high-impedance sensors and precision resistor networks, reducing bias-current-related measurement error.
• Low 5.1 nV/√Hz noise density improves signal clarity in instrumentation amplifiers, active filters, and sensor conditioning circuits.
• 11 MHz gain bandwidth supports precision analog filtering and ADC driver buffering where moderate signal bandwidth is required.
• 20 V/µs slew rate helps maintain waveform integrity in dynamic signal conditioning and control-loop applications.
• Rail-to-rail output swing improves usable output range when interfacing with single-supply ADCs and low-voltage analog systems.
• Wide 4.5 V to 36 V supply capability supports both portable measurement devices and industrial analog control platforms.

Applications

Equivalent & Alternatives

When evaluating an OPA140AIDBVR equivalent, engineers should compare input architecture, supply voltage range, noise density, bandwidth, package, and bias-current performance.

Compared with OPA141, OPA140AIDBVR is optimized for higher precision low-noise analog signal conditioning, while OPA141 is better for cost-sensitive JFET amplifier applications. OPA140AIDBVR vs OPA145 selection depends on whether the design prioritizes higher bandwidth and slew rate or lower operating power.

Quality

OPA140AIDBVR should be sourced as original Texas Instruments components through traceable and controlled supply channels. For production use, quality control may include marking inspection, package verification, reel and label review, solderability assessment, and electrical testing when required.

Because the device is used in precision analog systems, ESD protection, moisture-sensitive handling, and clean storage conditions are important for maintaining long-term reliability. Traceable sourcing helps reduce counterfeit risk and supports consistent production quality for industrial and instrumentation customers.

Availability

OPA140AIDBVR available at Aetrix Electronics and is suitable for precision analog signal conditioning platforms requiring stable component availability and repeatable production support.

Supply support may include volume procurement planning, scheduled delivery arrangements, traceable sourcing management, and long-term supply support for OEM, industrial, instrumentation, and data acquisition production programs.

For production builds, confirming package type, reel format, date code, lead time, and supply traceability helps improve purchasing control and reduce manufacturing interruption risk.

Manufacturer

Texas Instruments is a major global semiconductor manufacturer with strong expertise in analog ICs, precision amplifiers, data converters, power management, and embedded processing. Its operational amplifier portfolio supports industrial, automotive, communications, medical, and instrumentation applications.

For precision analog design, Texas Instruments provides broad documentation, reference circuits, product longevity support, and engineering resources that help designers integrate devices such as OPA140AIDBVR into stable production-ready systems.

FAQ

What is OPA140AIDBVR used for?

OPA140AIDBVR is used for precision analog signal conditioning, high-impedance sensor buffering, active filters, data acquisition front ends, and instrumentation circuits that require low noise and low input bias current.

Where can I find the OPA140AIDBVR datasheet download?

The OPA140AIDBVR datasheet download is available from Texas Instruments. The datasheet includes electrical characteristics, noise curves, operating supply limits, package information, layout guidance, and application details for the OPA140 amplifier family.

What should be considered in OPA140AIDBVR pinout design?

OPA140AIDBVR pinout design should focus on short feedback routing, clean high-impedance input layout, local power-supply bypassing, separation from switching noise, and careful grounding around precision analog nodes.

Is OPA140AIDBVR suitable for high-impedance sensor circuits?

Yes. OPA140AIDBVR uses a JFET input stage with very low input bias current, making it suitable for high-impedance sensors, precision resistor networks, photodiode interfaces, and buffer amplifier circuits.

What are common OPA140AIDBVR equivalent solutions?

Common OPA140AIDBVR equivalent options include OPA141 and OPA145, depending on the required balance of precision, noise, bandwidth, supply current, package compatibility, and cost target.