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Texas Instruments OPA130PA
- Part No.:
- OPA130PA
- Manufacturer:
- Texas Instruments
- Category:
- Instrumentation, Op Amps, Buffer Amps
- Package:
- 8-DIP (0.300", 7.62mm)
- Datasheet:
-
OPA130PA.pdf
- Description:
- IC OPAMP GP 1MHZ SGL LN 8DIP
- Quantity:
- Payment:
- Shipping:
Inventory:2,000
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Product details
Overview
OPA130PA 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, 530 µA quiescent current per amplifier, ±1 mV max input offset voltage, and 90 dB min common-mode rejection - enabling accurate DC-coupled amplification in sensor front-ends and data acquisition systems.
For engineers reviewing the OPA130PA datasheet, OPA130PA pinout, OPA130PA application, or OPA130PA equivalent, key selection criteria include its FET-input bias current (≤20 pA), unity-gain stability with ≥10 nF capacitive load drive, and operation across ±2.25 V to ±18 V supplies - critical for precision analog signal chains requiring minimal power and high source impedance compatibility.
Technical Context
The OPA130PA employs an input cascode architecture that maintains ultra-low input bias current (<20 pA) over its full common-mode range (±13 V), eliminating phase reversal under overvoltage conditions - a known failure mode in legacy FET op amps. Its internal compensation ensures unconditional unity-gain stability without external components.
It features laser-trimmed input offset voltage (±1 mV max), 120 dB open-loop gain, and rail-to-rail output swing capability (within 1.5 V of rails at ±15 V supply), supporting high-accuracy closed-loop configurations including voltage followers and transimpedance amplifiers for photodiode interfaces.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply Voltage Range | ±2.25 V to ±18 V - supports dual-supply operation in both low-voltage portable and industrial-grade analog systems. |
| Input Offset Voltage | ±1 mV max - enables sub-millivolt DC accuracy without external trimming in precision sensor interfaces. |
| Quiescent Current | 530 µA per amplifier - allows continuous operation in multi-stage battery-powered signal chains with >1-year runtime. |
| Gain-Bandwidth Product | 1 MHz - provides sufficient bandwidth for 10 kHz–100 kHz sensor signals while maintaining stability at unity gain. |
| Input Bias Current | 20 pA max at +25°C - preserves signal integrity when amplifying from high-impedance sources (>100 MΩ). |
| Common-Mode Rejection | 90 dB min - rejects noise in differential measurements where ground shifts or EMI affect both inputs equally. |
| Capacitive Load Drive | Stable with ≥10 nF - eliminates need for isolation resistors when driving ADC input filters or long PCB traces. |
Pinout & Package
OPA130PA is packaged in an 8-pin PDIP (DIP-8) with 0.3-inch body width, RoHS-compliant lead finish, and JEDEC MS-001 compliant footprint. Thermal resistance θJA is 100°C/W.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | Offset Trim (–) | Connects to wiper of 100 kΩ potentiometer for manual nulling of input offset voltage; not used in standard configurations. |
| 2 | Inverting Input (–In) | High-impedance FET node accepting feedback or signal return path; sensitive to layout-induced leakage currents. |
| 3 | Non-Inverting Input (+In) | High-impedance FET node for reference or signal input; requires symmetric trace routing to minimize CMRR degradation. |
| 4 | V– | Negative supply rail connection; must be decoupled with ≥10 nF ceramic capacitor near the pin. |
| 5 | Offset Trim (+) | Connects to one end of 100 kΩ potentiometer; used only with Pin 1 for offset adjustment per Figure 1 in datasheet SBOS053A. |
| 6 | Output | Class AB output stage capable of sourcing/sinking ±18 mA; drives loads down to 2 kΩ while maintaining linearity. |
| 7 | V+ | Positive supply rail connection; requires local 10 nF ceramic bypass capacitor to suppress supply noise coupling. |
| 8 | NC | No internal connection; left unconnected per TI design guidance to avoid parasitic coupling or mechanical stress. |
Key Features
| Feature | Design Value |
|---|---|
| No phase reversal on common-mode overvoltage | Eliminates catastrophic output inversion in voltage-follower configurations when input exceeds rail limits - critical for control loop safety. |
| Laser-trimmed input offset | Reduces system-level calibration burden by limiting initial offset to ±1 mV, enabling direct use in 12-bit to 14-bit measurement systems. |
| FET input with 10¹³ Ω || 1 pF impedance | Preserves signal amplitude and frequency response when interfacing with piezoelectric sensors, pH electrodes, or photodiodes. |
| Unity-gain stable with 10 nF capacitive load | Permits direct connection to ADC input RC filters or long cables without added series resistance or stability compensation. |
| Wide supply range (±2.25 V to ±18 V) | Enables reuse across multiple platforms - from coin-cell-powered IoT nodes to ±15 V industrial PLC analog modules. |
Applications
| Portable Medical Sensors | Industrial Process Transmitters |
|---|---|
|
Use Scenario: Amplifying microvolt-level EEG or ECG signals from dry electrodes with >1 GΩ source impedance. IC Role / Device Role / Timing Role: Precision DC-coupled buffer and gain stage in analog front-end, rejecting electrode half-cell potential drift. Use Value: 20 pA input bias current prevents signal loss across high-impedance electrode-skin interface; 1 mV offset avoids baseline shift in 10-bit ADC digitization. |
Use Scenario: Conditioning 4–20 mA loop transmitter outputs for isolated analog input modules in PLC backplanes. IC Role / Device Role / Timing Role: Low-drift I/V converter and output driver ensuring <0.1% total error across –40°C to +85°C ambient. Use Value: 90 dB CMRR rejects common-mode noise from shared 24 V DC bus; ±18 V supply headroom accommodates transient surges per IEC 61000-4-4. |
| Battery-Powered Data Loggers | High-Impedance Environmental Sensors |
|
Use Scenario: Signal conditioning for thermistor or RTD bridges in remote environmental monitoring nodes powered by Li-SOCl₂ cells. IC Role / Device Role / Timing Role: Low-power instrumentation amplifier input stage with rail-splitting reference generation. Use Value: 530 µA quiescent current extends 10-year battery life; laser-trimmed offset minimizes temperature-dependent calibration drift. |
Use Scenario: Interfacing with MEMS-based barometric pressure sensors or capacitive humidity elements exhibiting >100 MΩ output impedance. IC Role / Device Role / Timing Role: High-Z buffer isolating sensor capacitance from downstream filtering and ADC sampling. Use Value: 10¹³ Ω input impedance prevents loading-induced measurement hysteresis; 1 MHz GBW supports fast step-response during rapid atmospheric changes. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar precision FET-input operational amplifier applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| OPA140AIDBVR | Lower input bias current (0.5 pA typ), higher GBP (11 MHz), but higher quiescent current (1.5 mA) and narrower supply range (±5 V to ±18 V). | Better for ultra-high-Z photodiode TIA designs; less suitable for sub-1 mA battery systems. | Select OPA140AIDBVR only if <1 pA bias current is mandatory and power budget allows >2× increase in IQ. |
| AD8605ARTZ-REEL7 | CMOS input (1 pA typ), lower offset (60 µV max), but limited capacitive load drive (100 pF) and no guaranteed unity-gain stability. | Preferred for low-offset, low-noise audio preamps; unsuitable for driving ADC input filters or long traces. | Choose AD8605ARTZ-REEL7 when offset drift and voltage noise dominate requirements, and layout permits strict layout-controlled stability. |
Compared with OPA130PA, OPA140AIDBVR offers superior input bias performance at higher power cost, while AD8605ARTZ-REEL7 trades stability robustness for lower offset and noise - making OPA130PA the optimal balance for general-purpose, low-power, high-impedance precision amplification where reliability and ease of use are prioritized.
Availability
OPA130PA is available at Aetrix Electronics and suitable for portable medical devices, industrial process transmitters, and battery-powered data loggers requiring stable component supply across extended temperature ranges and long production lifecycles.
Supply support for OPA130PA 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 precision op amp design and manufacturing.
The OPA130PA belongs to TI's OPA130 series of FET-input op amps engineered for low-power, high-accuracy signal conditioning in portable, battery-operated, and high-source-impedance applications - emphasizing stability, ease of use, and dc precision.
FAQ
What is the maximum capacitive load the OPA130PA can drive while remaining stable?
The OPA130PA is specified for stable operation with capacitive loads up to 10 nF without external compensation. This capability allows direct connection to ADC input filters, long PCB traces, or cable-driven outputs without risk of oscillation - a key advantage over many competing FET-input op amps that require isolation resistors or complex compensation networks. The OPA130PA achieves this through internal compensation optimized for unity-gain stability across its full operating voltage and temperature range.
Does the OPA130PA require external offset voltage trimming in typical applications?
No, the OPA130PA uses laser trimming to achieve ±1 mV maximum input offset voltage at +25°C, eliminating the need for external trimming in most precision applications. Pins 1 and 5 are provided for optional manual nulling only in cases where system-level accuracy demands sub-millivolt offset - such as high-resolution weigh scale or laboratory-grade instrumentation. For standard use, those pins remain unconnected per TI's recommended layout.
Can the OPA130PA operate from a single +5 V supply?
Yes, the OPA130PA supports single-supply operation with a minimum total supply voltage of 4.5 V (±2.25 V), meaning it functions correctly with +5 V and ground. However, input common-mode range is limited to (V–)+1.2 V to (V+)-1.5 V, so with +5 V/0 V supplies, usable input range is approximately 1.2 V to 3.5 V. Output swing is similarly constrained - typically 1.2 V above ground and 1.5 V below +5 V - requiring careful level-shifting or rail-splitting for bipolar signal handling.
How does the OPA130PA prevent phase reversal during input overvoltage conditions?
The OPA130PA incorporates input cascode circuitry that maintains low input bias current and prevents phase reversal when the input common-mode voltage exceeds the supply rails - a failure mode common in basic JFET-input op amps. This architecture ensures predictable, monotonic output behavior even in voltage-follower configurations subjected to transient overvoltages, making the OPA130PA especially reliable in control loop and sensor interface applications where input excursions beyond rails may occur.
What is the thermal resistance (θJA) of the OPA130PA in its DIP-8 package?
The OPA130PA in the PDIP-8 (DIP-8) package has a junction-to-ambient thermal resistance (θJA) of 100°C/W, as specified in the SBOS053A datasheet. This value assumes standard JEDEC test conditions (single-layer board, 1 in² copper pad). Actual thermal performance in end equipment depends on PCB layout, copper area, airflow, and nearby heat sources - designers should verify junction temperature under worst-case operating conditions using measured or simulated power dissipation (PD = VS × IQ + VOUT × ILOAD).
OPA130PA Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- -
- Package/Case:
- 8-DIP (0.300", 7.62mm)
- Packaging:
- Tube
- Product Status:
- Obsolete
- 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:
- Through Hole
- Supplier Device Package:
- 8-PDIP
OPA130PA FAQ
1.How can I place an order for OPA130PA through Aetrix?
Please submit a Request for Quotation (RFQ) for OPA130PA 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 OPA130PA reliable?
The price and inventory of OPA130PA are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for OPA130PA is usually 5 days.
3.What payment methods are accepted for OPA130PA?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for OPA130PA transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for OPA130PA?
OPA130PA orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your OPA130PA 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 OPA130PA?
For technical support, including OPA130PA datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your OPA130PA requirements.
6.How does Aetrix verify that OPA130PA is sourced from the original manufacturer or authorized distributors?
All OPA130PA 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 OPA130PA meets industry standards.
7.What is the process for return or replacement of OPA130PA?
All OPA130PA units undergo pre-shipment inspection (PSI). If there is an issue with OPA130PA, 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 OPA130PA part is unused and in its original packaging.
Return procedure for OPA130PA:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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