Texas Instruments OPA300AIDBVT

Overview

OPA300AIDBVT from Texas Instruments is a single-channel, low-noise, fast-settling CMOS operational amplifier in a 6-pin SOT-23 package. It delivers 150MHz unity-gain bandwidth, 3nV/√Hz input voltage noise, and 16-bit settling in 150ns at 5V supply. Designed for high-resolution data acquisition, it drives 16-bit ADCs such as the ADS8401 with <0.003% THD+N at 1kHz.

For engineers reviewing the OPA300AIDBVT datasheet, OPA300AIDBVT pinout, OPA300AIDBVT application, or OPA300AIDBVT equivalent, key selection criteria include its shutdown-enabled low-power operation (9.5mA typical, 5µA in shutdown), rail-to-rail output swing (±100mV from rails), and validated performance in IF/RF amplification, active filtering, and precision preamplifier stages.

Technical Context

The OPA300AIDBVT implements a classic two-stage CMOS topology with folded-cascode gain stage and Class AB output driver, enabling both high slew rate (80V/µs) and unity-gain stability. Its input stage features ultra-low bias current (±0.1pA typ) and high impedance (10¹³ Ω || 3pF), optimized for high-Z sensor interfaces and charge-sensitive applications.

It supports true single-supply operation from +2.7V to +5.5V, with common-mode input range extending from (V−) − 0.2V to (V+) − 0.9V and output swing from (V−) + 0.1V to (V+) − 0.1V into 2kΩ. The enable pin (logic-referenced to V−) provides 1µs disable and 10µs enable timing, placing the output in high-impedance state during shutdown.

Key Specifications

Pinout & Package

OPA300AIDBVT is housed in a 6-pin SOT-23 (DBV) package, 2.9mm × 1.6mm × 1.15mm, with exposed pad for thermal enhancement (not electrically connected). Pin 1 is marked by a dot; top-view orientation follows JEDEC MO-178.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar high-speed, low-noise op-amp applications.

Compared with OPA301AIDBVR, OPA300AIDBVT adds critical shutdown control for energy-constrained systems; compared with LMH6629MA/NOPB, it offers proven unity-gain stability and SOT-23 footprint - making it the only drop-in solution for compact, low-power, 16-bit ADC interface designs.

Availability

OPA300AIDBVT is available at Aetrix Electronics and suitable for high-speed data acquisition, portable instrumentation, and industrial sensor signal conditioning requiring stable component supply and guaranteed long-term manufacturability.

Supply support for OPA300AIDBVT includes scheduled delivery planning, volume procurement assistance, BOM continuity management, traceable sourcing, and lifecycle availability coordination for OEM customers, industrial embedded developers, connected-device designers, and electronics production programs.

Manufacturer

Texas Instruments is a global semiconductor leader specializing in analog and embedded processing technologies, with over 50 years of innovation in precision amplifiers and data converter interfaces.

The OPAx30x series was designed specifically for 16-bit resolution systems - prioritizing fast settling, low distortion, and single-supply operability to eliminate external level-shifting and reduce system complexity in high-fidelity analog front-ends.

FAQ

What is the maximum capacitive load the OPA300AIDBVT can drive stably in unity-gain configuration?

The OPA300AIDBVT is unity-gain stable but limited to driving ≤5pF total capacitive load without external isolation. Figure 5-16 shows peaking begins beyond this point. For larger loads (e.g., ADC input capacitance + PCB trace), a 20Ω–75Ω series resistor between OPA300AIDBVT output and load restores stability - verified in TI's SBOS271F datasheet Section 7.2.1.

Does the OPA300AIDBVT require dual supplies, or can it operate from a single 3.3V rail?

OPA300AIDBVT operates fully specified from a single +2.7V to +5.5V supply - including 3.3V. Its input common-mode range extends to (V−) − 0.2V and output swings to (V−) + 0.1V, enabling true single-supply use with ground-referenced inputs and rail-to-rail output utilization in 3.3V systems.

How does the enable pin on the OPA300AIDBVT behave during power-up?

When the enable pin is left unconnected, internal circuitry pulls it high, defaulting OPA300AIDBVT to active mode at power-up. To ensure controlled startup, tie enable to V− (logic low) until system initialization completes, then assert (V−) + 2.5V to activate - achieving reliable sequencing without external reset logic.

Can the OPA300AIDBVT replace the OPA301AIDBVR in an existing design without layout changes?

Yes - OPA300AIDBVT and OPA301AIDBVR share identical 6-pin SOT-23 (DBV) footprints and pinout. The only functional difference is the enable pin (pin 1 on OPA300AIDBVT is NC; pin 1 on OPA301AIDBVR is unused). No PCB changes are needed, though firmware may require enable pin handling if leveraging shutdown.

What is the typical input offset voltage drift over temperature for the OPA300AIDBVT?

OPA300AIDBVT exhibits a typical offset voltage drift of 2.5µV/°C, with production distribution shown in Figure 5-31 of SBOS271F - 90% of units fall within ±6µV/°C. This low drift supports precision DC-coupled applications like strain gauge amplification where thermal EMF errors must remain below 10µV over −40°C to +125°C.