Texas Instruments OPA2301AID

Overview

OPA2301AID from Texas Instruments is a dual, low-noise, 150MHz CMOS operational amplifier in an SOIC-8 package, designed for high-resolution signal conditioning. It delivers 16-bit settling in 150ns, 3nV/√Hz input voltage noise, 0.003% THD+N at 1kHz, and operates from +2.7V to +5.5V single supply - enabling precision ADC driver and IF amplifier applications.

For engineers reviewing the OPA2301AID datasheet, OPA2301AID pinout, OPA2301AID application, or OPA2301AID equivalent, key selection criteria include unity-gain stability, rail-to-rail output swing (±100mV), shutdown capability (5µA per channel), and industrial temperature range (−40°C to +125°C) compliance.

Technical Context

The OPA2301AID implements a classic two-stage CMOS topology with folded-cascode gain stage and Class AB output stage, optimized for fast settling without sacrificing stability. Its differential input pair is biased for maximum slew rate (80V/μs), while internal ESD protection diodes clamp inputs to supply rails with ±10mA current limit.

Unlike the OPA2300, the OPA2301AID lacks an enable/shutdown pin - confirmed by pin configuration diagrams (Figure 4-6) and absence of Enable functionality in its SOIC-8 pinout. All specifications apply across −40°C to +125°C, with open-loop gain ≥95dB (RL = 2kΩ) and PSRR ≥200μV/V over 2.7–5.5V supply range.

Key Specifications

Pinout & Package

OPA2301AID is packaged in an 8-pin SOIC (SO-8) with no enable pin and no NC pins - all eight pins are functional. The device contains two independent amplifiers sharing common supply rails.

Key Features

Applications

Equivalent & Alternatives

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

Compared with OPA2301AID, OPA2350EA/250 trades bandwidth and noise for lower power, while LMH6629MA/NOPB extends bandwidth by 10× at increased current and layout complexity - neither is pin-compatible, but both serve adjacent high-speed analog niches.

Availability

OPA2301AID is available at Aetrix Electronics and suitable for 16-bit data acquisition systems, RF receiver front-ends, and industrial instrumentation requiring stable component supply across extended temperature ranges.

Supply support for OPA2301AID 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 decades of expertise in high-performance op-amp design and manufacturing.

The OPAx30x product line was engineered specifically for 16-bit resolution systems demanding fast settling, low distortion, and single-supply operation - targeting data converter interface, communications, and precision measurement applications.

FAQ

What is the maximum capacitive load the OPA2301AID can drive stably in unity-gain configuration?

The OPA2301AID is stable driving ≤5pF capacitive load in unity-gain configuration, as verified in Figure 5-16 of the datasheet. For larger loads (e.g., ADC input capacitance + PCB trace), a series resistor (RS) between output and load is required - e.g., 20Ω for 100pF - to maintain phase margin. Layout parasitics must be minimized to avoid unintentional instability.

Does the OPA2301AID have a shutdown pin, and how does it differ from the OPA2300?

No, the OPA2301AID does not include a shutdown pin - confirmed by its SOIC-8 pinout (Figure 4-6) and absence of Enable functionality in its electrical specifications. In contrast, the OPA2300 (VSSOP-10) features dedicated EnableA/EnableB pins. This makes OPA2301AID simpler for always-on dual-amplifier applications but unsuitable for power-gated systems.

What is the input common-mode voltage range for the OPA2301AID at 5V supply?

At VS = 5V, the OPA2301AID supports an input common-mode voltage range from (V−) − 0.2V to (V+) − 0.9V, i.e., −0.2V to +4.1V. This allows direct interfacing with sensors or DACs operating near ground or mid-supply, but excludes inputs above 4.1V without level-shifting.

Can the OPA2301AID drive a 150Ω load while maintaining 0.003% THD+N?

No - THD+N of 0.003% is specified at RL = 2kΩ. Driving 150Ω increases distortion significantly: Figure 5-8 shows THD rises to >−70dBc (~0.03%) at 150Ω. For video or composite loads, use Figure 5-14's differential gain/phase data; for high-current loads, verify output swing in Figure 5-19.

Is the OPA2301AID RoHS-compliant and what is its moisture sensitivity level?

Yes, OPA2301AID is RoHS-compliant (lead-free NiPdAu finish) and rated MSL Level-2-260°C-1 YEAR per JEDEC J-STD-020. This requires floor life management: unopened tape-and-reel must be used within 1 year of seal date, and baked if exposed >1 year or >60% RH per IPC/JEDEC J-STD-033 guidelines.