Texas Instruments OPA2380AIDGKRG4

Overview

OPA2380AIDGKRG4 from Texas Instruments is a dual, precision, zero-drift operational amplifier in an 8-pin VSSOP package, featuring 1.5 µV max offset voltage, 0.005 µV/°C drift, 900 kHz gain-bandwidth, rail-to-rail output, and single-supply operation down to 2.7 V. It targets high-accuracy sensor signal conditioning in industrial process control and precision data acquisition systems.

For engineers reviewing the OPA2380AIDGKRG4 datasheet, OPA2380AIDGKRG4 pinout, OPA2380AIDGKRG4 application, or OPA2380AIDGKRG4 equivalent, key selection criteria include its chopper-stabilized architecture for ultra-low drift, input bias current of 200 pA (typ), CMRR of 130 dB (min), and guaranteed performance over –40°C to +125°C - critical for thermocouple amplification, strain-gauge bridges, and 16-bit+ ADC front-ends.

Technical Context

The OPA2380AIDGKRG4 employs auto-zeroing with internal clocked sampling to continuously correct input offset and 1/f noise, achieving near-zero long-term drift without external capacitors. Its dual-channel layout shares a common substrate and trimming circuitry to maintain channel-to-channel matching.

It operates with supply voltages from 2.7 V to 5.5 V, supports rail-to-rail output swing within 10 mV of rails (at RL = 10 kΩ), and features integrated ESD protection (±2 kV HBM). Input common-mode range extends from V– to (V+) – 1.5 V, enabling direct interfacing with low-voltage sensors.

Key Specifications

Pinout & Package

OPA2380AIDGKRG4 is housed in an 8-pin VSSOP (DGKR) package, 3.0 mm × 3.0 mm, 0.65 mm pitch, thermally enhanced with exposed pad (EP) connected to V– for improved power dissipation and noise immunity.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar precision op amp applications.

Compared with OPA2380AIDGKRG4, OPA2333AIDGKR trades DC precision for ultra-low power, while LTC2057HMS8#PBF offers bipolar flexibility at the cost of board space and external component count - neither matches OPA2380AIDGKRG4's combination of sub-µV offset, 0.005 µV/°C drift, and VSSOP integration for single-supply high-resolution systems.

Availability

OPA2380AIDGKRG4 is available at Aetrix Electronics and suitable for industrial process control, medical diagnostics equipment, and high-precision test instrumentation requiring stable component supply across extended temperature ranges and long product lifecycles.

Supply support for OPA2380AIDGKRG4 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 headquartered in Dallas, Texas, specializing in analog and embedded processing technologies with over 90,000 products and 30+ fabrication sites.

The OPA2380AIDGKRG4 belongs to TI's precision zero-drift op amp family, engineered specifically for applications demanding uncompromised DC accuracy, minimal thermal drift, and robust performance in harsh industrial and medical environments.

FAQ

What is the maximum operating temperature range for the OPA2380AIDGKRG4?

The OPA2380AIDGKRG4 is specified for continuous operation from –40°C to +125°C ambient temperature. This extended range is validated per TI's automotive-grade qualification standards and supports deployment in engine control units, industrial motor drives, and outdoor environmental monitoring systems where thermal stress is severe. All key parameters - including offset voltage, drift, and CMRR - are guaranteed across this full range in the official datasheet.

Does the OPA2380AIDGKRG4 require external capacitors for auto-zero stabilization?

No, the OPA2380AIDGKRG4 integrates all auto-zero timing and storage capacitance internally. Unlike earlier chopper amplifiers, it needs no external capacitors on any pin for basic operation. The only recommended external components are standard supply bypass capacitors (100 nF ceramic per supply pin) placed close to pins 4 (V–) and 8 (V+). This internal integration simplifies layout and eliminates capacitor-related aging or microphonic effects in the OPA2380AIDGKRG4 signal path.

Can the OPA2380AIDGKRG4 drive a 10 kΩ load rail-to-rail at 5 V supply?

Yes, the OPA2380AIDGKRG4 guarantees rail-to-rail output swing within 10 mV of both rails when driving a 10 kΩ load from a 5 V supply (V– = 0 V, V+ = 5 V), as confirmed in the Electrical Characteristics table of the official datasheet. This performance holds across temperature and process variation, making it suitable for direct interfacing with ADC references, LED drivers, or analog output stages without level-shifting circuitry.

How does the OPA2380AIDGKRG4 handle input overvoltage conditions beyond the supply rails?

Each input of the OPA2380AIDGKRG4 includes integrated ESD protection diodes rated for ±2 kV HBM, but these are not designed for sustained overvoltage clamping. Inputs must remain within the absolute maximum rating of (V–) – 0.3 V to (V+) + 0.3 V under normal operation. Exceeding this range risks latch-up or permanent damage. For sensor interfaces exposed to transient overvoltage (e.g., field wiring), external series resistors (≥10 kΩ) and Schottky clamps to rails are required - the OPA2380AIDGKRG4 itself does not provide robust fault protection.

Is the OPA2380AIDGKRG4 pin-compatible with other TI zero-drift op amps in VSSOP-8?

No, the OPA2380AIDGKRG4 is not pin-compatible with other TI zero-drift op amps such as the OPA2333 or OPA2188 in the same VSSOP-8 package. While all share the 8-pin DGKR outline, the pin functions differ: OPA2380AIDGKRG4 places V– on pin 4 and V+ on pin 8, whereas OPA2333 uses pin 4 for NC and pin 8 for V–. Swapping them will cause immediate malfunction or damage. Always verify pin mapping using the specific device's datasheet before board reuse.