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Home > Products > Integrated Circuits (ICs) > Linear - Amplifiers - Instrumentation, OP Amps, Buffer Amps > OPA380AIDGKRG4
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OPA380AIDGKRG4

Manufacturer Part Number:
OPA380AIDGKRG4
Manufacturer / Brand
Texas Instruments
Part of Description:
IC TRANSIMPEDANCE 1 CIRC 8VSSOP
Datasheets:
Lead Free Status / RoHS Status:
ROHS3 Compliant
Stock Condition:
New original, 15580 pcs Stock Available.
ECAD Model:
Ship From:
Hong Kong
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Part Number OPA380AIDGKRG4
Manufacturer / Brand Texas Instruments
Stock Quantity 15580 pcs Stock
Category Integrated Circuits (ICs) > Linear - Amplifiers - Instrumentation, OP Amps, Buffer Amps
Description IC TRANSIMPEDANCE 1 CIRC 8VSSOP
Lead Free Status / RoHS Status: ROHS3 Compliant
RFQ OPA380AIDGKRG4 Datasheets OPA380AIDGKRG4 Details PDF
OPA380AIDGKRG4 Details PDF for FR.pdf
OPA380AIDGKRG4 Details PDF for KR.pdf
OPA380AIDGKRG4 Details PDF for IT.pdf
OPA380AIDGKRG4 Details PDF for ES.pdf
OPA380AIDGKRG4 Details PDF for DE.pdf
Voltage - Supply Span (Min) 2.7 V
Voltage - Supply Span (Max) 5.5 V
Voltage - Input Offset 4 µV
Supplier Device Package 8-VSSOP
Slew Rate 80V/µs
Series -
Package / Case 8-TSSOP, 8-MSOP (0.118", 3.00mm Width)
Package Tape & Reel (TR)
Output Type -
Operating Temperature -40°C ~ 125°C
Number of Circuits 1
Mounting Type Surface Mount
Gain Bandwidth Product 90 MHz
Current - Supply 7.5mA
Current - Output / Channel 150 mA
Current - Input Bias 3 pA
Base Product Number OPA380
Amplifier Type Transimpedance

Packaging & ESD

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OPA380AIDGKRG4 Product Details:

The OPA380AIDGKRG4 is a high-performance transimpedance amplifier (TIA) integrated circuit (IC) manufactured by Luminary Micro/Texas Instruments. As a member of the OPA380 series, this device is designed to address the needs of various instrumentation and buffer amplifier applications.

The OPA380AIDGKRG4 features a single-circuit transimpedance amplifier configuration, offering a gain bandwidth product of 90MHz and a slew rate of 80V/s. This combination of high-speed performance and low input bias current (3pA) makes the device well-suited for a wide range of applications, including optical sensing, photodiode signal conditioning, and other high-impedance signal processing tasks.

The IC is packaged in an 8-pin VSSOP (Very-Small-Outline) package, which provides a compact and space-efficient solution for surface-mount applications. The device is RoHS-compliant and operates over an extended temperature range of -40°C to 125°C, ensuring reliable performance in diverse environmental conditions.

Key specifications of the OPA380AIDGKRG4 include a single-supply voltage range of 2.7V to 5.5V, a maximum output current of 150mA per channel, and a low input offset voltage of 4μV. These features make the amplifier well-suited for a variety of applications, such as optical instrumentation, medical equipment, industrial automation, and telecommunications systems.

In terms of compatibility, the OPA380AIDGKRG4 is part of the OPA380 series, which includes several equivalent or alternative models. These include the OPA380AIDGKR, OPA380AIDGK, and OPA380AIDGNR, all of which share similar performance characteristics and package options. These alternative models may offer slight variations in specific parameters or packaging, allowing designers to select the most appropriate option for their particular application requirements.

OPA380AIDGKRG4 Key Technical Attributes

Transimpedance Amplifier

Single Circuit

Slew Rate 80 V/s

Gain Bandwidth Product 90 MHz

OPA380AIDGKRG4 Packing Size

Type: Tape & Reel (TR)

Material: MSOP8

Size: 8-VSSOP, 8-MSOP (0.118", 3.00mm Width)

Pin Configuration: 8-VSSOP

Thermal Characteristics: Operating Temperature -40°C ~ 125°C

Electrical Properties: Voltage Supply Range 2.7 V ~ 5.5 V, Current Supply 7.5mA

OPA380AIDGKRG4 Application

Ideal for high-speed signal processing

Used in photo-diode amplification

Enhancement of sensor signals

OPA380AIDGKRG4 Features

High slew rate allowing for rapid changes in output

Low input bias current enhancing accuracy in measurement

High bandwidth suitable for large bandwidth signals

Low offset voltage minimizing error at the output

OPA380AIDGKRG4 Quality and Safety Features

Lead free and RoHS Compliant ensuring environmental safety

Moisture Sensitivity Level (MSL) 2, indicating a shelf life of 1 year

Built to handle operating temperatures ranging from -40°C up to 125°C

OPA380AIDGKRG4 Compatibility

Compatible with signal input devices requiring high-speed monitoring

Pairs well with devices in high-frequency signal environments

OPA380AIDGKRG4 Datasheet PDF

Our website provides the most authoritative and detailed datasheet for the OPA380AIDGKRG4

We recommend downloading this essential document directly from the current page for precise specifications and installation guidance

Quality Distributor

IC-Components is a premium distributor for Luminary Micro / Texas Instruments

We assure the best available OPA380AIDGKRG4 transimpedance amplifiers and recommend getting a quote directly from our website for excellent service and reliable product delivery

Frequently Asked Questions

What are the key design constraints when integrating the OPA380AIDGKRG4 into a high-sensitivity photodiode interface circuit, particularly regarding power supply noise and PCB layout?
When designing a high-sensitivity photodiode interface with the OPA380AIDGKRG4, power supply noise must be minimized using low-ESR bypass capacitors (e.g., 100nF ceramic) placed within 2mm of the supply pins. The 8-VSSOP package’s small size demands careful PCB layout: keep feedback traces short and shielded, avoid routing digital signals near the input, and use a solid ground plane under the device. The OPA380AIDGKRG4’s 3pA input bias current is sensitive to leakage paths—use guard rings on the inverting input and avoid solder mask voids near high-impedance nodes.
Can the OPA380AIDGKRG4 operate reliably in industrial environments with ambient temperatures reaching 120°C, and what derating considerations apply?
Yes, the OPA380AIDGKRG4 is rated for operation from -40°C to 125°C, making it suitable for industrial applications up to 120°C ambient. However, at elevated temperatures, the 7.5mA supply current may increase slightly, and thermal resistance of the 8-VSSOP package (θJA ≈ 160°C/W) limits power dissipation. Ensure total power loss (including output loading) stays below ~250mW to avoid junction temperatures exceeding 150°C. Active cooling or copper pour under the package is recommended in sealed enclosures.
Is the OPA380AIDGKRG4 a suitable replacement for the OPA350 in a transimpedance amplifier design, and what modifications are required?
The OPA380AIDGKRG4 can replace the OPA350 in transimpedance applications, but key differences must be addressed: the OPA380AIDGKRG4 has a lower supply voltage range (2.7V–5.5V vs. OPA350’s ±2.25V to ±18V), so dual-supply designs must be reconfigured for single-supply operation. Additionally, the OPA380AIDGKRG4’s 90MHz GBW and 80 V/µs slew rate are optimized for high-speed photodiode applications, whereas the OPA350 targets general-purpose use. Feedback capacitor selection may need adjustment due to different input capacitance and stability characteristics.
What are the risks of using the OPA380AIDGKRG4 in a multi-channel data acquisition system with shared reference voltages, and how can crosstalk be mitigated?
In multi-channel systems, the OPA380AIDGKRG4’s high gain bandwidth product (90MHz) increases susceptibility to crosstalk via shared reference or supply rails. To mitigate this, use separate local decoupling per channel, star grounding for analog references, and isolate digital control lines. The 8-VSSOP package’s proximity to adjacent components in dense layouts can exacerbate coupling—maintain ≥3mm spacing between sensitive analog traces and digital signals. Consider adding a low-pass filter at the output if sampling rates are below 10MSPS to suppress high-frequency noise coupling.
How does the OPA380AIDGKRG4’s 4mV input offset voltage impact precision in low-light-level photodiode measurements, and can it be calibrated out?
The OPA380AIDGKRG4’s 4mV input offset voltage can dominate error in low-light applications where photocurrents generate sub-millivolt outputs. For example, at a transimpedance gain of 1MΩ, a 4mV offset equates to a 4nA equivalent input current error—significant when measuring pA-level signals. This offset can be calibrated digitally in software if the system includes an ADC with sufficient resolution, or reduced using an external nulling circuit (e.g., potentiometer on offset null pins, if available). However, the OPA380AIDGKRG4 does not include offset null pins, so calibration must occur post-amplification.
What alternatives exist if the OPA380AIDGKRG4 is unavailable, and how do they compare in terms of performance and design impact?
Viable alternatives include the MCP6V51 (Microchip) and ADA4817 (Analog Devices). The MCP6V51 offers lower input bias current (1fA) and built-in offset calibration but has lower bandwidth (10MHz). The ADA4817 provides similar 90MHz GBW and low noise but requires ±2.5V supplies and has higher quiescent current (10mA). Migrating to either requires reevaluation of power supply architecture, feedback stability, and layout. The OPA380AIDGKRG4 remains preferable for single-supply, low-power, high-speed photodiode applications due to its optimized transimpedance architecture and 2.7V operation.
Can the OPA380AIDGKRG4 drive a 50Ω coaxial cable directly in a remote sensor application, and what output stage considerations are necessary?
The OPA380AIDGKRG4 can drive a 50Ω cable, but its 150mA output current capability must be verified under load. When driving a 50Ω line terminated at the receiver, the amplifier sees a 100Ω load (source-terminated), requiring ~25mA for a 2.5V swing. This is within limits, but output DC offset and thermal dissipation increase. Use a series 25–50Ω resistor at the output to isolate the op-amp from cable capacitance and prevent instability. Ensure the total power dissipation (P = V²/R) does not exceed thermal limits, especially in high-duty-cycle applications.
What long-term reliability concerns should be considered when using the OPA380AIDGKRG4 in outdoor or high-humidity environments?
The OPA380AIDGKRG4 has an MSL 2 rating (1-year floor life), indicating moderate moisture sensitivity. In high-humidity or outdoor environments, prolonged exposure before reflow can cause popcorning or delamination. Always store in dry cabinets (<10% RH) and follow IPC/JEDEC J-STD-033 handling procedures. For field-deployed systems, conformal coating is recommended to prevent electrochemical migration, especially on the high-impedance input node. Long-term drift of input offset voltage (not specified in datasheet) should be characterized under temperature cycling if used in precision applications over 10+ years.
How does the OPA380AIDGKRG4’s slew rate of 80 V/µs limit its use in pulsed laser detection applications with fast rise-time requirements?
The OPA380AIDGKRG4’s 80 V/µs slew rate may limit fidelity in pulsed laser detection with sub-nanosecond rise times. For example, to accurately reproduce a 3V pulse with <10% rise-time error, the required slew rate is approximately 3V / 1ns = 3000 V/µs—far exceeding the OPA380AIDGKRG4’s capability. This results in distorted pulse shapes and reduced timing accuracy. For such applications, consider faster amplifiers like the OPA657 (1600 V/µs). The OPA380AIDGKRG4 is better suited for moderate-speed applications (e.g., 10–100ns pulses) where bandwidth and low noise are prioritized over ultra-fast edge response.
Is the OPA380AIDGKRG4 compatible with 3.3V microcontroller ADCs without additional level shifting, and what output swing limitations apply?
The OPA380AIDGKRG4 can interface directly with 3.3V ADCs when powered from a 3.3V supply, as its output swings within millivolts of the rails under light loads. However, with a 150mA output capability, heavy capacitive or resistive loading may reduce swing range. For reliable ADC operation, ensure the output stays within the ADC’s specified input range (typically 0.1V to 3.2V for 3.3V ADCs). Use a small series resistor (10–100Ω) at the output to dampen oscillations when driving ADC sampling capacitors. The OPA380AIDGKRG4’s rail-to-rail output stage makes it suitable for such direct interfacing in low-voltage systems.

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