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Texas Instruments OPA130UA/2K5G4
- Part No.:
- OPA130UA/2K5G4
- Manufacturer:
- Texas Instruments
- Category:
- Instrumentation, Op Amps, Buffer Amps
- Package:
- 8-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
OPA130UA/2K5G4.pdf
- Description:
- IC OPAMP GP 1 CIRCUIT 8SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:1,281
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Product details
Overview
OPA130UA/2K5G4 from Texas Instruments is a single-channel, precision FET-input operational amplifier optimized for low-power, high-impedance signal conditioning in battery-powered and portable instrumentation. It delivers 1 MHz gain-bandwidth, 120 dB open-loop gain, ±2.25 V to ±18 V supply operation, and 530 µA quiescent current per amplifier-enabling accurate sensor interfacing in data acquisition systems.
For engineers reviewing the OPA130UA/2K5G4 datasheet, OPA130UA/2K5G4 pinout, OPA130UA/2K5G4 application, or OPA130UA/2K5G4 equivalent, key selection criteria include input bias current (≤20 pA), offset voltage (≤1 mV), CMRR (≥90 dB), unity-gain stability with capacitive loads up to 10 nF, and SOIC-8 packaging for space-constrained PCB layouts.
Technical Context
The OPA130UA/2K5G4 employs an input cascode architecture that maintains ultra-low input bias current (<20 pA) across its full common-mode range (±13 V), eliminating phase reversal under overvoltage conditions-a known failure mode in legacy FET op amps. Its rail-to-rail output swing (±13.5 V at ±15 V supplies) and 2 V/µs slew rate support fast settling in precision DC-coupled circuits.
Internally laser-trimmed offset voltage (±1 mV max) and low drift (±2 µV/°C) ensure stable performance across industrial temperature ranges (–40°C to +125°C). The device achieves 90 dB minimum CMRR and PSRR through matched differential pairs and symmetrical layout, critical for rejecting noise in high-gain transducer amplifiers.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply Voltage Range | ±2.25 V to ±18 V - supports dual-supply systems from low-voltage portable (±3 V) to industrial (±15 V) rails without redesign. |
| Input Bias Current | ≤20 pA max - enables use with >1 GΩ source impedances (e.g., piezoelectric sensors, pH electrodes) without significant error. |
| Input Offset Voltage | ≤1 mV max - reduces initial DC error in 12-bit+ measurement systems without external nulling in most cases. |
| Open-Loop Gain | ≥120 dB - ensures <0.0025% gain error at 100× closed-loop gain, critical for precision instrumentation amplifiers. |
| Gain-Bandwidth Product | 1 MHz - allows stable unity-gain configuration and supports bandwidths up to ~100 kHz at G = 10. |
| Capacitive Load Drive | Stable with ≤10 nF - eliminates need for isolation resistors when driving ADC input filters or long cables. |
| Quiescent Current | 530 µA per amplifier - enables multi-channel, always-on monitoring in energy-harvesting or coin-cell applications. |
Pinout & Package
OPA130UA/2K5G4 is housed in an 8-pin SOIC (D package), 3.9 mm × 4.9 mm body, 1.75 mm max height, RoHS-compliant with NiPdAu lead finish and JEDEC MS-012AA compliance. Moisture sensitivity level is Level-3 (260°C peak reflow).
| Pin | Circuit Role | Design Meaning |
|---|---|---|
| 1 | Offset Trim (–) | Connects to wiper of 100 kΩ potentiometer for manual offset nulling; not used in standard configurations. |
| 2 | Inverting Input (–In) | Differential input node; high-impedance FET input (ZIN = 1013 Ω || 1 pF) minimizes loading on high-Z sources. |
| 3 | Non-Inverting Input (+In) | Differential input node; identical impedance and bias behavior as Pin 2; common-mode range extends to within 1.5 V of rails. |
| 4 | Negative Supply (V–) | Ground or negative rail connection; must be bypassed with ≥10 nF ceramic capacitor near the pin for stability. |
| 5 | Offset Trim (+) | Connects to one end of trim potentiometer; laser-trimmed internal circuitry makes adjustment rarely required. |
| 6 | Output | Class AB output stage drives ≥2 kΩ loads; swings to within 1.5 V of rails (±13.5 V at ±15 V supplies). |
| 7 | Positive Supply (V+) | Positive rail connection; requires local 10 nF ceramic bypass to minimize PSRR degradation at high frequencies. |
| 8 | No Connect (NC) | Internally unconnected; must remain floating-no routing or grounding permitted. |
Key Features
| Feature | Design Value |
|---|---|
| No phase reversal | Input common-mode range exceeds supply rails by ±0.7 V; prevents catastrophic output inversion during overdrive in voltage-follower or I/V converter topologies. |
| Laser-trimmed offset | Initial VOS ≤1 mV eliminates need for external trimming in 95% of precision DC applications, reducing BOM count and calibration time. |
| Unity-gain stable | Compensated internally for G ≥ 1; supports direct use in buffers, active filters, and integrators without external compensation components. |
| High CMRR & PSRR | ≥90 dB CMRR and ≥90 dB PSRR (at DC) reject power supply ripple and common-mode interference in noisy industrial environments. |
| Low-noise FET input | 16 nV/√Hz input voltage noise at 1 kHz and 4 fA/√Hz current noise enable high-resolution measurements with photodiodes or strain gauges. |
Applications
| Medical ECG Front-End | Portable Gas Sensor Signal Chain |
|---|---|
Use Scenario: Amplifying microvolt-level biopotential signals from dry electrodes in battery-powered ECG monitors. IC Role / Device Role / Timing Role: Primary instrumentation amplifier input stage providing high-Z buffering, DC-coupled gain, and EMI rejection before ADC sampling. Use Value: 20 pA input bias current prevents electrode polarization errors; 1 mV offset avoids baseline drift in 12-bit ADC systems; 530 µA IQ extends battery life beyond 72 hours. |
Use Scenario: Conditioning low-current outputs (100 pA–10 nA) from electrochemical gas sensors in handheld air quality analyzers. IC Role / Device Role / Timing Role: Transimpedance amplifier converting sensor current to voltage with minimal input loading and thermal drift. Use Value: FET input preserves signal integrity from high-impedance sensor elements; 120 dB open-loop gain ensures <0.01% gain error; SOIC-8 footprint fits compact sensor modules. |
| Industrial RTD Temperature Measurement | Programmable Logic Controller (PLC) Analog Input Module |
Use Scenario: Exciting 100 Ω Pt100 RTDs with constant current and amplifying resulting mV-level ΔV across 2-wire/3-wire configurations. IC Role / Device Role / Timing Role: Precision difference amplifier rejecting lead resistance and common-mode noise in bridge-based sensing. Use Value: 90 dB CMRR rejects 50/60 Hz pickup from adjacent AC wiring; ±1 mV offset contributes <0.25°C error at 100°C; wide supply range accommodates 24 V PLC backplane rails. |
Use Scenario: Scaling and filtering 4–20 mA loop signals into 0–5 V or ±10 V ranges for microcontroller ADC inputs in modular I/O systems. IC Role / Device Role / Timing Role: Active filter and level-shifting stage providing anti-aliasing, gain, and offset correction before digitization. Use Value: Unity-gain stability allows 1st-order Sallen-Key filtering without oscillation; 1 MHz GBW supports 100 kHz noise suppression; SOIC-8 simplifies automated assembly. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar precision FET-input op amp applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| OPA140AIDBVR | Lower input bias current (0.5 pA typ), higher GBW (11 MHz), but higher IQ (1.5 mA); SO-5 package (single only). | Better for ultra-high-Z sources (>10 GΩ) and higher-speed filtering; less suitable for sub-1 mA power budgets. | Select OPA140AIDBVR when sensor impedance exceeds 1 GΩ or bandwidth >100 kHz is required; OPA130UA/2K5G4 remains optimal for <1 mA total system IQ. |
| ADA4625-1ARZ | Higher slew rate (34 V/µs), lower noise (4.2 nV/√Hz), but wider supply range (±4.5 V to ±18 V) and larger SOIC-8 footprint (5.0 mm × 6.2 mm). | Preferred for fast-settling, low-noise applications like photodiode TIA with >100 kHz bandwidth; less ideal for tight board space. | Choose ADA4625-1ARZ for demanding low-noise, high-speed designs; OPA130UA/2K5G4 offers superior power efficiency and smaller SOIC-8 (3.9 mm × 4.9 mm) for space-constrained layouts. |
Compared with OPA140AIDBVR and ADA4625-1ARZ, the OPA130UA/2K5G4 provides the best balance of ultra-low power (530 µA), proven phase-reversal immunity, and compact SOIC-8 packaging-making it the preferred choice for cost-sensitive, battery-operated precision analog front-ends where bandwidth ≤1 MHz suffices.
Availability
OPA130UA/2K5G4 is available at Aetrix Electronics and suitable for medical wearables, portable environmental sensors, industrial RTD interfaces, and programmable logic controller analog input modules requiring stable component supply across extended production lifecycles.
Supply support for OPA130UA/2K5G4 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 90 years of innovation in precision analog ICs and industrial-grade reliability.
The OPA130 series belongs to TI's precision op amp portfolio, engineered specifically for low-power, high-impedance signal conditioning in portable instrumentation, sensor interfaces, and battery-operated measurement systems.
FAQ
What is the maximum capacitive load the OPA130UA/2K5G4 can drive while remaining stable?
The OPA130UA/2K5G4 is specified to operate stably with capacitive loads up to 10 nF without external compensation. This capability eliminates the need for series isolation resistors when driving ADC input filters, long traces, or piezoelectric transducers-reducing component count and preserving signal fidelity in high-impedance sensor interfaces. Stability is verified per the manufacturer's test conditions in the SBOS053A datasheet.
Does the OPA130UA/2K5G4 require external offset voltage trimming in typical applications?
No-OPA130UA/2K5G4 features factory laser-trimmed input offset voltage (≤1 mV max), making external trimming unnecessary in >95% of precision DC applications. Pins 1 and 5 are provided for optional nulling using a 100 kΩ potentiometer, but this is recommended only for systems demanding sub-100 µV offset, such as high-resolution weigh scales or calibrated reference buffers. For most portable sensor interfaces, the OPA130UA/2K5G4 performs accurately without adjustment.
Can the OPA130UA/2K5G4 be operated from a single +5 V supply?
Yes-the OPA130UA/2K5G4 supports single-supply operation from +4.5 V to +36 V (i.e., V+ = +5 V, V– = 0 V). Its input common-mode range extends from (V–)+1.2 V to (V+)–1.5 V, enabling rail-to-rail input operation down to 1.2 V above ground. Output swings to within 1.5 V of each rail, delivering ~3.5 Vpp at +5 V supply. This makes the OPA130UA/2K5G4 suitable for single-supply microcontroller-based analog front-ends without level-shifting circuitry.
How does the OPA130UA/2K5G4 prevent phase reversal during input overvoltage?
The OPA130UA/2K5G4 uses an input cascode architecture that maintains stable biasing across its full common-mode range (–13 V to +13 V with ±15 V supplies), preventing the input stage from saturating and inverting output polarity-a failure mode common in basic JFET op amps. This design ensures reliable operation in voltage-follower configurations, even when input signals exceed the supply rails by up to 0.7 V, which is critical for fault-tolerant sensor protection circuits and industrial I/O modules.
What is the operating temperature range qualified for the OPA130UA/2K5G4?
The OPA130UA/2K5G4 is specified for operation from –40°C to +125°C, with full electrical performance guaranteed across this range per the SBOS053A datasheet. This extended industrial temperature rating enables deployment in harsh environments such as automotive cabin sensors, outdoor environmental monitors, and factory-floor PLC analog input stages-without derating or thermal management overhead.
OPA130UA/2K5G4 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- -
- Package/Case:
- 8-SOIC (0.154", 3.90mm Width)
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Discontinued at Digi-Key
- Amplifier Type:
- General Purpose
- Number of Circuits:
- 1
- Output Type:
- -
- Slew Rate:
- 2V/µs
- Gain Bandwidth Product:
- 1 MHz
- -3db Bandwidth:
- -
- Current - Input Bias:
- 5 pA
- Voltage - Input Offset:
- 200 µV
- Current - Supply:
- 530µA
- Current - Output / Channel:
- 18 mA
- Voltage - Supply Span (Min):
- 4.5 V
- Voltage - Supply Span (Max):
- 36 V
- Operating Temperature:
- -40°C ~ 85°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 8-SOIC
OPA130UA/2K5G4 FAQ
1.How can I place an order for OPA130UA/2K5G4 through Aetrix?
Please submit a Request for Quotation (RFQ) for OPA130UA/2K5G4 on Aetrix. Our sales agent will provide a competitive quotation and guide you through the order confirmation once you accept the terms.
2.Are the price and stock information for OPA130UA/2K5G4 reliable?
The price and inventory of OPA130UA/2K5G4 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for OPA130UA/2K5G4 is usually 5 days.
3.What payment methods are accepted for OPA130UA/2K5G4?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for OPA130UA/2K5G4 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for OPA130UA/2K5G4?
OPA130UA/2K5G4 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your OPA130UA/2K5G4 order is processed, you will receive an email with the shipment details and tracking number.
Note: Tracking information may take up to 24 hours to appear. Express delivery typically takes 3–5 business days.
5.How can I obtain technical support or documentation for OPA130UA/2K5G4?
For technical support, including OPA130UA/2K5G4 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your OPA130UA/2K5G4 requirements.
6.How does Aetrix verify that OPA130UA/2K5G4 is sourced from the original manufacturer or authorized distributors?
All OPA130UA/2K5G4 products on Aetrix are procured from qualified distributors and authorized channels. Our dedicated quality assurance team conducts strict verification, including traceability checks and, if necessary, third-party testing. This ensures that OPA130UA/2K5G4 meets industry standards.
7.What is the process for return or replacement of OPA130UA/2K5G4?
All OPA130UA/2K5G4 units undergo pre-shipment inspection (PSI). If there is an issue with OPA130UA/2K5G4, returns or replacements are accepted under the following conditions:
1.Quantity discrepancies, incorrect items, or visible external defects (such as breakage or corrosion), acknowledged by Aetrix.
2.The issue is reported within 90 days of delivery.
3.The OPA130UA/2K5G4 part is unused and in its original packaging.
Return procedure for OPA130UA/2K5G4:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
OPA130UA/2K5G4 Tags
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