Texas Instruments OPA4330AIRGYR

Overview

OPA4330AIRGYR from Texas Instruments is a quad-channel, zero-drift CMOS operational amplifier optimized for precision, low-power, single-supply operation. It delivers 50 µV maximum input offset voltage, 0.25 µV/°C maximum drift, 35 µA maximum quiescent current per amplifier, rail-to-rail input/output swing, and operates from 1.8 V to 5.5 V supply. It is used in battery-powered instrumentation, temperature sensing, and high-accuracy current-sense circuits.

For engineers reviewing the OPA4330AIRGYR datasheet, OPA4330AIRGYR pinout, OPA4330AIRGYR application, or OPA4330AIRGYR equivalent, this page provides verified specifications, package mapping (14-pin VQFN), validated pin functions, real-world use cases, and two confirmed alternative parts with documented technical and application differences.

Technical Context

The OPA4330AIRGYR implements Texas Instruments' proprietary auto-calibration architecture to continuously correct input offset and eliminate 1/f noise-enabling stable DC precision without external trimming. Its input stage supports common-mode voltage range extending 0.1 V beyond both supply rails, and its output drives within 100 mV of each rail under 10 kΩ load.

This device is unity-gain stable, features internal EMI filtering, and maintains CMRR ≥100 dB and PSRR ≥100 dB across –40°C to +125°C. It draws only 21–35 µA per channel and achieves 350 kHz gain-bandwidth with 0.16 V/µs slew rate-balancing speed, accuracy, and ultra-low power.

Key Specifications

Pinout & Package

OPA4330AIRGYR is housed in a 14-pin VQFN (RGY) package measuring 3.5 mm × 3.5 mm × 0.9 mm with an exposed thermal pad on the underside, designed for soldering to PCB ground plane to enhance thermal performance (R_θJC(bot) = 4.6 °C/W).

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar precision operational amplifier applications.

Compared with OPA4330AIRGYR, OPA4333AIRGYR trades ultra-low power for higher bandwidth while maintaining identical DC precision; MCP4Vxx-E/P offers lower unit cost but sacrifices 3× offset, 8× drift, and rail-to-rail input capability-requiring design compromises in accuracy-critical roles.

Availability

OPA4330AIRGYR is available at Aetrix Electronics and suitable for battery-powered instruments, temperature measurement systems, and precision current-sense circuits requiring stable component supply across extended product lifecycles.

Supply support for OPA4330AIRGYR 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 delivering analog and embedded processing solutions, with over 50 years of innovation in precision amplifiers and signal chain ICs.

The OPA4330AIRGYR belongs to TI's Zero-Drift Operational Amplifier product line, engineered specifically for high-accuracy, low-power, single-supply applications in portable and industrial instrumentation where long-term DC stability is mandatory.

FAQ

What is the maximum supply voltage for OPA4330AIRGYR?

The absolute maximum supply voltage for OPA4330AIRGYR is 7 V, but the recommended operating range is 1.8 V to 5.5 V. Exceeding 5.5 V risks permanent damage and violates the device's specified electrical characteristics. Within the 1.8–5.5 V window, OPA4330AIRGYR maintains full performance including 50 µV offset, 0.25 µV/°C drift, and rail-to-rail I/O behavior across –40°C to +125°C.

Does OPA4330AIRGYR support rail-to-rail input with true ground sensing?

Yes, OPA4330AIRGYR supports rail-to-rail input with a common-mode voltage range from (V−) − 0.1 V to (V+) + 0.1 V. In single-supply configurations where V− = GND, this means the input can accept signals down to –0.1 V - enabling true ground-referenced or slightly negative signal acquisition without level-shifting circuitry. This capability is explicitly verified in the Electrical Characteristics table for OPA4330AIRGYR under "Input Voltage Range".

What is the thermal pad connection requirement for OPA4330AIRGYR in the RGY package?

The exposed thermal die pad on the underside of the OPA4330AIRGYR (RGY) package must be soldered to a PCB copper area connected to V− (GND in single-supply use). Per TI's datasheet, this connection achieves R_θJC(bot) = 4.6 °C/W and is mandatory for reliable thermal performance. Leaving the pad floating or connecting it to another net degrades junction-to-board thermal resistance and may cause overheating under sustained load.

Can OPA4330AIRGYR drive capacitive loads without oscillation?

OPA4330AIRGYR is unity-gain stable and characterized to drive ≥100 pF capacitive loads without oscillation, as confirmed in Figure 14 (Small-Signal Overshoot vs Load Capacitance) of the SBOS432G datasheet. For loads exceeding 100 pF, TI recommends adding a small series resistor (e.g., 10–50 Ω) between the output and the capacitor to maintain phase margin. The device's 350 kHz GBW and 0.16 V/µs slew rate inherently limit instability risk in typical sensor-buffering applications.

Is OPA4330AIRGYR suitable for automotive applications?

Yes, OPA4330AIRGYR is qualified for operation from –40°C to +125°C and meets AEC-Q100 stress test requirements for temperature cycling, HTOL, and ESD (±4000 V HBM). Its zero-drift architecture, low 1/f noise, and rail-to-rail I/O make it appropriate for cabin temperature sensors, battery monitoring, and body-control modules where long-term DC accuracy and low power are critical. Always verify final layout and board-level EMI compliance per vehicle OEM standards.